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Ma, Yan M. Eng Massachusetts Institute of Technology. "Uganda Manafwa River early flood warning system development hydrologic watershed modeling using HEC-HMS, HEC-RAS, ArcGIS." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82819.
Full textAbstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 135-136).
The Manafwa River basin spans several districts in Eastern Uganda. Over the years, frequent floods have constantly posed a great threat to the local communities in these districts. The Uganda Red Cross Society (URCS) intends to design a precipitation based flood forecasting system for the Manafwa River Basin. Towards this end, the URCS initiated collaboration with MIT's Department of Civil and Environmental Engineering in January 2013, in an attempt to establish a hydrologic modeling system that relates upstream precipitation with downstream stream discharge using ArcGIS, HEC-HMS and HEC-RAS. This work is dedicated to present the progress in the modeling endeavor, provide technical guidance to the extent possible, and facilitate hydrologic modeling efforts of similar nature. The main focus is on the loss methods used in HEC-HMS: the Curve Number loss method and the Initial and Constant loss method It is found out that the neither the Curve Number nor Initial and Constant loss method is perfectly suitable to modeling both short-term and long term simulations. The Curve Number method is able to better model the precipitation-runoff processes in short term simulations. The Initial and Constant loss method tends to underestimate water volume runoff in short term simulations from what is observed The Curve Number loss method produced results that are on average closer to observed values in short term simulations; however, the resulting curve number values from calibration are considerably lower than the estimated values.
by Yan Ma.
M.Eng.
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Agrawal, Ashish. "PrePro2004: a data model with pre and post-processor for HEC-HMS." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2550.
Full textAbstract:
This thesis presents the design concepts and development of an interface (Pre-
Pro2004) utilizing geodatabases for the Hydrologic Modeling System (HMS) of the
Hydrologic Engineering Center (HEC). HMS is a rainfall-runoff model which supports
lumped-parameter as well as distributed-parameter based modeling. PrePro2004 uses the
spatial-analysis as well as data handling capabilities of ArcGIS. The spatial data are processed
to create input files for HMS. These input files and the output from HMS are stored
in two geodatabases which were developed using data model concepts. The tools are provided
to reproduce an HMS model from the data inside these geodatabases. The interface
is developed based on the DataCentric approach which brings different hydrologic and
hydraulic models together. This approach aims to attain a long-term goal of utilizing the
same data for different hydrologic or hydraulic models with additional model specific
requirements.
Two case studies are presented to show the applications of the tools developed. The
first case study details the creation of HMS input files for Salado Creek watershed with
Digital Elevation Model as input. It includes the importation of an existing HMS model
for Salado Creek watershed as Appendix C. The second case study details the creation of
HMS input files for the Bull Creek watershed, with land use and soil type data as inputs.
It describes the capabilities of tools developed in detail.
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Santos, Juliano Boeck 1977. "Modelagem hidrológica HEC-HMS da Bacia Hidrográfica do Ribeirão Lavapés, Botucatu-SP /." Botucatu, 2017. http://hdl.handle.net/11449/151027.
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Orientador: Célia Regina Lopes ZimbackCoorientador: Luís Gustavo Frediani Lessa
Coorientador: Manuel Esteban Lucas Borja
Banca: Zacarias Xavier de Barros
Banca: Francienne Góis Oliveira
Banca: Osmar Delmanto Junior
Banca: Diego Augusto de Campos Moraes
Resumo: O uso inadequado dos recursos naturais é um dos principais problemas enfrentados pelos países. Considerando a extensão territorial das bacias hidrográficas, a utilização de ferramentas de geoprocessamento baseado no Sistema de Informações Geográficas (SIG) são apropriadas para o monitoramento hidrológico por meio do planejamento, controle, armazenamento e execução de informações. A Bacia Hidrográfica do Ribeirão Lavapés tem suas nascentes principais e seus afluentes dentro da área urbana do município de Botucatu-SP-Brasil, com isso o monitoramento, mapeamento e planejamento ambiental dessa área é de fundamental importância para a sua recomposição e conservação. A bacia de estudo foi dividida em três formações geológicas: Adamantina, Serra Geral e Pirambóia/Botucatu e sua produção de água foi quantificada por meio de um modelo hidrológico associado ao SIG, utilizando o Método de Curva Número (CN). Em relação aos resultados obtidos para os valores de infiltração e escoamento superficial, a Formação Adamantina (CN=97,87) apresentou uma alta impermeabilização do solo, a Formação Serra Geral (CN=73,97) um aumento do escoamento superficial, e a Formação Pirambóia/Botucatu (CN=67,29) altas taxas de infiltração. Quanto à vazão, em todas as simulações realizadas a Formação Adamantina apresentou valores superiores às demais formações e a Formação Pirambóia/Botucatu foi superior a Formação Serra Geral devido sua maior área de captação, embora apresente um valor de CN inferior. Comparand... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Inadequate use of natural resources is one of the main problems faced by the countries. Considering the territorial extent of the Hydrographic Basins, it becomes necessary to use geoprocessing tools based on Geographic Information System (GIS) for the hydrological monitoring by planning, control, storage and execution information. The Ribeirão Lavapés Hydrographic Basin has its main springs and its tributaries within the urban area of the city of Botucatu-SP-Brazil, so the monitoring, mapping and environmental planning of this area is of fundamental importance for its recomposition and conservation. The study basin was divided into three geological formations: Adamantina, Serra Geral and Pirambóia/Botucatu, and its water production was quantified by means of a hydrological model associated with GIS, using the Number Curve Method (CN). Regarding the results obtained for the infiltration and surface runoff values, the Adamantina Formation (CN = 97.87) presented a high waterproofing of the soil, the Serra Geral Formation (CN = 73.97) an increase of the surface runoff, and Pirambóia/Botucatu Formation (CN = 67.29) high rates of infiltration. As for the flow rate, in all simulations, the Adamantina Formation presented higher values than the other formations and the Pirambóia/Botucatu Formation was superior to the Serra Geral Formation due to its higher catchment area, although it presents a lower CN value. Comparing the flow rate, in both return periods, of the mean geological formations with that of the Ribeirão Lavapés Hydrographic Basin as a whole, it was observed that in the 1 hour rainfall the values were higher in the formations, while at 6 and 12 hours, its was ...
Doutor
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Santos, Juliano Boeck [UNESP]. "Modelagem hidrológica HEC-HMS da Bacia Hidrográfica do Ribeirão Lavapés, Botucatu-SP." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151027.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O uso inadequado dos recursos naturais é um dos principais problemas enfrentados pelos países. Considerando a extensão territorial das bacias hidrográficas, a utilização de ferramentas de geoprocessamento baseado no Sistema de Informações Geográficas (SIG) são apropriadas para o monitoramento hidrológico por meio do planejamento, controle, armazenamento e execução de informações. A Bacia Hidrográfica do Ribeirão Lavapés tem suas nascentes principais e seus afluentes dentro da área urbana do município de Botucatu-SP-Brasil, com isso o monitoramento, mapeamento e planejamento ambiental dessa área é de fundamental importância para a sua recomposição e conservação. A bacia de estudo foi dividida em três formações geológicas: Adamantina, Serra Geral e Pirambóia/Botucatu e sua produção de água foi quantificada por meio de um modelo hidrológico associado ao SIG, utilizando o Método de Curva Número (CN). Em relação aos resultados obtidos para os valores de infiltração e escoamento superficial, a Formação Adamantina (CN=97,87) apresentou uma alta impermeabilização do solo, a Formação Serra Geral (CN=73,97) um aumento do escoamento superficial, e a Formação Pirambóia/Botucatu (CN=67,29) altas taxas de infiltração. Quanto à vazão, em todas as simulações realizadas a Formação Adamantina apresentou valores superiores às demais formações e a Formação Pirambóia/Botucatu foi superior a Formação Serra Geral devido sua maior área de captação, embora apresente um valor de CN inferior. Comparando a vazão, em ambos os períodos de retorno, da média das formações geológicas com a da Bacia Hidrográfica do Ribeirão Lavapés como um todo, observou-se que na duração de chuva de 1 hora os valores foram superiores nas formações, enquanto que em 6 e 12 horas, foram superiores na bacia como um todo. Assim, pode-se concluir que os dados de entrada disponíveis e os parâmetros utilizados tornaram o modelo uma boa ferramenta na simulação de eventos na previsão de cenários, assim como, para futuras tomadas de decisões pelos gestores dos recursos hídricos.
Inadequate use of natural resources is one of the main problems faced by the countries. Considering the territorial extent of the Hydrographic Basins, it becomes necessary to use geoprocessing tools based on Geographic Information System (GIS) for the hydrological monitoring by planning, control, storage and execution information. The Ribeirão Lavapés Hydrographic Basin has its main springs and its tributaries within the urban area of the city of Botucatu-SP-Brazil, so the monitoring, mapping and environmental planning of this area is of fundamental importance for its recomposition and conservation. The study basin was divided into three geological formations: Adamantina, Serra Geral and Pirambóia/Botucatu, and its water production was quantified by means of a hydrological model associated with GIS, using the Number Curve Method (CN). Regarding the results obtained for the infiltration and surface runoff values, the Adamantina Formation (CN = 97.87) presented a high waterproofing of the soil, the Serra Geral Formation (CN = 73.97) an increase of the surface runoff, and Pirambóia/Botucatu Formation (CN = 67.29) high rates of infiltration. As for the flow rate, in all simulations, the Adamantina Formation presented higher values than the other formations and the Pirambóia/Botucatu Formation was superior to the Serra Geral Formation due to its higher catchment area, although it presents a lower CN value. Comparing the flow rate, in both return periods, of the mean geological formations with that of the Ribeirão Lavapés Hydrographic Basin as a whole, it was observed that in the 1 hour rainfall the values were higher in the formations, while at 6 and 12 hours, its was higher in the basin as a whole. Therefore, it can be concluded that the available input data and the parameters used have made the model a good tool in simulating events in scenario prediction, as well as for future decision making by water resource managers.
CNPq: 140206/2014-0
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Orellana, Cabello Rodrigo Eduardo. "Modelamiento hidrológico e hidráulico para el análisis de inundaciones en la ciudad de Piura utilizando HEC-HMS y HEC-RAS." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/18304.
Full textAbstract:
Las inundaciones son uno de los fenómenos naturales más catastróficos a las que el hombre ha tenido que enfrentarse. Desde tiempos atrás, las ciudades se establecieron en áreas cercanas a los márgenes de ríos con el fin de abastecerse de agua para consumo propio y para el desarrollo de sus actividades agrícolas o ganaderas. Sin embargo, el hecho de situarse cerca de un río, también los expone a enfrentar posibles desbordes y frecuentes inundaciones. Piura es una de las regiones norteñas que sufre constantemente los efectos del Fenómeno El Niño (FEN) que, por lo general, se manifiesta con lluvias torrenciales y desborde de ríos que en conjunto generan inundaciones afectando seriamente a la población. El río Piura, el cual en la mayor parte del año presenta caudales insignificantes, aumenta su caudal considerablemente ante la presencia de este fenómeno llegando a sobrepasar el flujo normal promedio y produciendo inundaciones en áreas aledañas donde se localiza la ciudad, como las ocurridas en 1925, 1983, 1998 y 2017. El presente estudio intenta determinar los hidrogramas de diseño y las áreas de inundación en la ciudad para diferentes períodos de retorno partiendo desde la recolección de información pluviométrica de las estaciones, completación de datos faltantes, el análisis estadístico para precipitaciones de 24 horas, el modelamiento hidrológico de precipitación-escorrentía utilizando el software HEC-HMS para obtener los hidrogramas y los caudales máximos instantáneos, el modelamiento hidráulico en el software HEC-RAS para la simulación de inundación, la delimitación de las áreas inundables y, finalmente, se proponen medidas para reducir el efecto de desborde del río. Dentro de esta perspectiva, el trabajo se divide en cinco capítulos: El primer capítulo define el problema de investigación y los objetivos, el segundo capítulo aborda el marco teórico, en el tercero se presentan las características de la cuenca del río Piura, el cuarto capítulo describe la metodología llevada a cabo para alcanzar los objetivos propuestos y en el quinto capítulo se discuten los resultados.
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Decina, Thiago Galvão Tiradentes. "Análise de medidas de controle de inundações a partir da avaliação de cenários de uso e ocupação do solo na bacia hidrográfica do Córrego do Gregório, São Carlos - SP." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-30082012-111216/.
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O processo de urbanização vem ocorrendo na maioria das cidades brasileiras de forma desorganizada. Desse modo, um problema recorrente que afeta diversos municípios brasileiros são as inundações. A falta de um planejamento que levasse em consideração a drenagem urbana no início do desenvolvimento das cidades acaba criando condições para que as inundações sejam deflagradas a cada época chuvosa. Assim, mostra-se necessária a planificação de medidas preventivas e corretivas que abordem essa questão, a fim de que os prejuízos causados pelas inundações sejam minimizados. Dessa forma, a modelação hidrológica aparece como uma poderosa ferramenta, ao tornar possível uma análise das medidas de controle, através da criação de cenários e simulação de eventos hidrológicos. Nesse contexto o presente trabalho tem como objetivo analisar, por meio de simulação hidrológica e hidráulica, o desempenho de algumas medidas de controle de inundação, estruturais e não-estruturais. Para tanto, com o auxílio do programa ArcGIS 9.3 e imagens de satélite de alta resolução, a bacia hidrográfica do Córrego do Gregório, em São Carlos SP, foi digitalizada e foram criados cenários alternativos que incorporaram as medidas de controle. Através da utilização dos softwares HEC-HMS e HEC-RAS foram realizadas as modelações hidráulica e hidrológica, utilizando tempos de retorno de 25, 50 e 100 anos para a chuva de projeto. Com os resultados obtidos (hidrogramas de cheia e manchas de inundação referentes a cada tempo de retorno), foi possível analisar as medidas comparando-se os diferentes cenários, e concluiu-se, para este caso, que os melhores resultados correspondem à associação das medidas estruturais e não-estruturais. Contudo, também foi verificado que, mesmo com a concretização do cenário mais favorável, o problema das inundações não seria satisfatoriamente equacionado, o que revela a necessidade de se considerar outras medidas para minimizar os prejuízos decorrentes das inundações, tais como medidas de controle na fonte, seguros contra inundações e sistemas de alerta antecipados.The urbanization process has taken place in most Brazilian cities in a disorganized way, and floods are a recurring problem that has affected many municipalities. The lack of a planning that takes into account the urban drainage in the early development of the cities creates conditions for floods to occur in every rainy season. Therefore, the planning of preventive and corrective measures is necessary to address this issue in order to minimize the flood damages. Hydrological modeling appears as a powerful tool, as it enables the analysis of the flood management measures through the creation of scenarios and simulations of hydrological events. In this context, this dissertation analyzes the performance of some structural and nonstructural flood control measures by means of hydrologic and hydraulic simulations. The basin of the Gregório Stream, in São Carlos - SP, was scanned and scenarios that incorporate the management measures were created, both with the aid of software ArcGIS 9.3 and highresolution satellite images. Hydraulic and hydrologic modelings were performed by HEC-HMS and HEC-RAS software programs using return periods of 25, 50 and 100 years for the design storm. The results (flood hydrographs and flooding areas for each return period) allowed analyzing the measures by comparing the different scenarios and the best results corresponded to the association of structural and nonstructural measures. However, even by implementing the best scenario, the problem of flooding would not be satisfactorily solved, revealing the need to consider other measures to minimize flood damage, such as runoff source control measures, flood insurance and early warning systems.
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MENDES, Thiago Augusto. "Avaliação da Vulnerabilidade de Barramentos ao Rompimento de pequenos barramentos localizados a montante." Universidade Federal de Goiás, 2008. http://repositorio.bc.ufg.br/tede/handle/tde/642.
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Previous issue date: 2008-08-22In spite of Brazil being the country with one of the largest quantities of dams on the planet, there is no study that confront the influence of small dams collapse on major dams. This is very important from a strategic and planning point of view, since much of the energy produced in the country comes from hydroelectric installed in rivers. Althought the hydroelectric sizing is done following strict security techniques, the upstream reservoirs, in most cases are not. This factor leads to great uncertainty about safety of these dams. Thus, this work is important to the development of a methodology able to quantify how small dams affect the safety of large dams. The purpose was set a vulnerability rate to disruption of these small dams, thereby providing data for municipal, state and federal entities about the real situation for granting, construction and operation of dams. The determination of vulnerability rate was made with simulations conducted in the HEC-HMS hydrological model, thereby determining the additional flow from the disruption of dams along the upstream of the dam under study. The study site chosed was the basin of the Meia Ponte river - GO, precisely the Rochedo s hydroelectric, where 30 reservoirs were evaluated for disruption. It was found that the flow that reaches the Rochedo s reservoir, without considering the disruption of reservoirs located upstream (1.222 m³/s) for a return period of 10,000 years is about 31% higher than the flow planned for Rochedo, that is 935 m³/s, as informed by the Energy Company of Goiás (CELG, 2008). The calculated vulnerability rate was 1,31 for a return period of 10,000 years without considering the disruption of the upstream reservoirs and were suitable for a reservoir that was built in the 50's. However the flow that reaches the Rochedo s reservoir, considering the disruption of the upstream reservoirs for a return period of 10,000 years (1.880 m3/s) is much higher than flow considered without disruption of the upstream reservoirs. The calculated vulnerability rate goes to 1,54 for a return period of 10,000 years, wich is considered a high value that deserves care assessment
Apesar do Brasil ser o país com uma das maiores quantidades de barramentos do planeta, não existe um estudo que seja de conhecimento desse autor, que confronte a influência do colapso dos pequenos barramentos sobre grandes represas. Este aspecto é muito importante do ponto de vista estratégico e de planejamento, uma vez que boa parte da energia produzida no país vem das hidroelétricas instaladas em rios. Embora estas hidroelétricas tenham o seu dimensionamento feito seguindo rigorosas técnicas de segurança, os armazenamentos em reservatórios de montante, na maioria dos casos não o são. Este fator leva a uma grande incerteza quanto ao nível de segurança destas barragens. Dessa forma, este trabalho terá importância no desenvolvimento de uma metodologia capaz de quantificar o quanto as pequenas barragens afetam a segurança das grandes barragens. O objetivo foi definir um índice de vulnerabilidade ao rompimento dessas pequenas barragens, ajudando assim os órgãos municipais, estaduais e federais a constatar a real situação para outorga, construção e operação de barragens. A determinação do índice de vulnerabilidade será feita a partir de simulações realizadas com o modelo hidrológico HEC-HMS, determinando assim o acréscimo de vazão proveniente do rompimento das barragens localizadas à montante da barragem em estudo. O local de estudo escolhido foi a bacia hidrográfica do rio Meia Ponte - GO, precisamente a usina hidroelétrica de Rochedo, onde 30 barramentos foram avaliados para o rompimento. Verificou-se que a vazão que chega ao reservatório de Rochedo sem considerar o rompimento dos barramentos localizados à montante (1.222 m³/s) para um período de retorno de 10.000 anos é cerca de 31% maior que a vazão planejada para Rochedo, que no caso é de 935 m³/s, conforme informação fornecida pela Companhia Energética de Goiás (CELG, 2008). O índice de vulnerabilidade calculado foi de 1,31 para um período de retorno de 10.000 anos sem considerar o rompimento dos barramentos à montante, mostrando-se adequado para um reservatório que foi construído na década de 50. Já a vazão que chega ao reservatório de Rochedo, considerando o rompimento dos barramentos à montante para um tempo de retorno de 10.000 anos (1.880 m3/s) é muito superior à vazão considerada sem o rompimento dos barramentos à montante. O índice de vulnerabilidade calculado passa a ser de 1,54, para um período de retorno de 10.000 anos, considerado um valor alto merecendo cuidados de avaliação.
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Alavimoghaddam, Mohammadreza. "Assessing the ability of HEC-HMS rainfall-runoff model to simulate stream flow across Sweden." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-143345.
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Computer modeling is the powerful tool for simulating nature’s behavior; however, still more efforts are need for reaching perfect simulation with computer models (especially in the hydrological field of study). In this Master’s thesis, the accuracy of the HEC-HMS computer model for long term rainfall-runoff simulation was evaluated across Sweden. Five different catchments from north to south of Sweden were selected and then simulation have done for 34 years of available data. Simulation was conducted using daily, monthly and yearly time scale resolutions. Results from the north to the south of Sweden were completely different. Simulated runoff and observed runoff in northern catchments followed the same pattern over different time scales but in the southern part of Sweden the results had different patterns in space and time. The best results with HEC-HMS were found in the northern catchments with steep main river slopes. In the southern catchments the model could not predict runoff in any realistic manner at any time and space scale. In total the HEC-HMS model cannot simulate the rainfall runoff for long periods of simulation across Sweden. This is especially true in southern parts of the country dominate with low elevation catchments. However, with regards to its ability for event-based simulation HEC-HMS could be a suitable tool to simulate flood event discharges that are needed for road or other hydraulic structures designs. But, this would require significant amounts of calibration and model development.
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BATISTA, Larissa Ferreira David Romão. "Estudo de indicadores de risco de inundação no município do Cabo de Santo Agostinho." reponame:Repositório Institucional da UFPE, 2015. https://repositorio.ufpe.br/handle/123456789/14243.
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CAPES
Mudanças no meio ambiente causadas por ações antrópicas e dinâmicas naturais são evidentes com o aumento do número de eventos extremos, dentre os quais se destacam as inundações por sua abrangência, recorrência e potencial de destruição. A gestão de desastres e as consequentes políticas de mitigação de danos passam pela compreensão do comportamento e interações entre os componentes do risco chamados indicadores. Para tal, foi estabelecida e aplicada metodologia de classificação de indicadores de risco no município do Cabo de Santo Agostinho, Pernambuco, Brasil. Inserida na bacia do rio Pirapama, a cidade do Cabo constitui área em plena expansão com grande relevância econômica para o Estado. Esta pesquisa faz parte do convênio Ministério das Cidades / GEGEP – UFPE - Projeto “Elaboração de cartas geotécnicas de aptidão à urbanização frente aos desastres naturais nos Municípios de Camaragibe; Abreu e Lima; Cabo de Santo Agostinho; Jaboatão dos Guararapes, localizados na Região Metropolitana do Recife, Estado de Pernambuco”. Foram simulados eventos extremos com o uso dos modelos HEC-HMS e HEC-RAS. O modelo hidrológico (HEC-HMS) foi calibrado possibilitando aquisição de hidrogramas para áreas sem dados de vazão observados. O modelo hidrodinâmico (HEC-RAS) simulou eventos em regime permanente para os picos de vazão detectados nos anos de 2000 e 2010, e com auxílio da ferramenta de geoprocessamento, foi possível gerar mapas de profundidade, velocidade e exposição. Foi selecionada uma área na sede do município para estimativa dos danos resultantes das cheias. Foram utilizadas curvas cota-dano desenvolvidas para a cidade de Itajubá/MG. Foi observada a influência fundamental da profundidade para os cenários pós-enchentes, a contribuição determinante da exposição para a origem dos prejuízos e a atuação dos danos diretos para a quantificação da vulnerabilidade, uma vez que são elementos acessíveis. O dano por m2 chegou a R$ 80,29 e se refere apenas à área construída com uso residencial selecionada para a análise.
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Hall, Alexander Edmund. "Effects of Mulitple Small Impoundments on Hydrologic Regime in Southwestern Ohio." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1345483374.
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Perez, Evan J. "MODELING FLOOD REDUCTION SCENARIOS FOR A SMALL COASTAL COMMUNITY." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/933.
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The Arroyo Grande Creek Watershed, an approximately 170 mi2 watershed located on the central coast of California, drains to the Pacific Ocean via the Arroyo Grande Creek that passes through several coastal cities including the community of Oceano. At the mouth of the Creek is the Arroyo Grande Lagoon, which is connected to another lagoon known as the Oceano Lagoon, by a tidal flap-gate whose hydraulics is a function of water levels in the two lagoons. Historically the Oceano Lagoon has played a part in floods that have occurred in the community of Oceano. The most recent flooding occurred in 2010 when a storm with about a10-yr frequency caused flooding that led to an estimated property damage of about two million dollars. This study was conducted to understand hydrology of the Arroyo Grande watershed that also feeds Lopez Lake, a reservoir that provides water for drinking, agriculture, and environmental flows; to characterize hydraulics of the Oceano Lagoon; and to explore scenarios for flood mitigation. Objectives of the study are to provide a better understanding of the causes of the historical floodings; map the extent of floodings for various storm events including 10 year, 50 year, and 100 year under current conditions; and examine potential solutions to reduce future floodings. Surface water hydrology of the Arroyo Grande Creek Watershed was studied using HEC-HMS to quantify runoff specifically into the Oceano Lagoon. HEC-HMS was calibrated using known streamflow to improve the accuracy of the model. The HEC-HMS model was developed using spatial data that was organized in ArcMAP. Data such as elevation, land use, soil type, and impervious surface were processed using HEC-GeoHMS and exported to HEC-HMS. Mitigation measures were simulated in HEC-HMS by adjusting parameters such as the outlet configuration and the increased volume in Oceano Lagoon. Each mitigation measure delivered varying effectiveness. Results show that while the peak flow and volume in the lagoon can be reduced, larger design storms will continue to inundate the area unless drastic steps are taken. The findings could assist local flood control agencies by evaluating the risks of continuing to use the existing drainage system, and identifying opportunities available to reduce those risks.
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Klinchuch, Matthew Timothy. "Coupled Surface Water-Groundwater Model to Analyze Sustainability of the Atascadero Subbasin." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/785.
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The Atascadero Subbasin, located on the central coast of California, is a small, hydraulically separated sub-region of the Paso Robles Groundwater Basin. Three local cities operate approximately 40 wells to pump the Subbasin for their entire water supply needs. Past studies have questioned sustainability of the Subbasin as the combined pumping rate by the three cities is nearing the perennial yield of the Subbasin. The studies have been inconclusive as some areas of the Subbasin have seen increases in water table elevation thus questioning the assessment that consumption is nearing perennial yield. The objective of this research was to perform a water balance study for the aquifer and examine sustainability of the Subbasin. Surface water and groundwater models were developed to investigate the interaction between the Salinas River Alluvium Soils and the deeper Paso Robles Formation based on pumping from different shallow and deep wells. Surface water hydrology of the Subbasin was studied using HEC-HMS, and Visual MODFLOW was used to model the aquifer. Both HEC-HMS and Visual MODFLOW was calibrated to improve simulation accuracy. HEC-HMS was used to quantify natural recharge to the aquifer and to simulate streamflow and water level for the Salinas River. HEC-GeoHMS was used to delineate the watershed, create sub-watersheds and channel networks, and to extract sub-watershed inputs that were used to build HEC-HMS from geospatial data including land use, soil and topography data. Different hydrogeologic layers were defined to represent the alluvium and deeper soils. Results show that currently the Atascadero Subbasin does not appear to be in overdraft as shallow groundwater wells pump Salinas River underflow and the alluvium appears to be providing some recharge to the deeper aquifer. These findings would provide municipal and water managers better understanding of where their water comes from, the effects of their pumping, and could help with developing sustainable management strategies for the Subbasin.
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Nicoletti, Federico Ilario. "Modellazione idrologica di un bacino alpino in ambiente HEC-HMS: applicazione al bacino idrografico del torrente Saint-Barthélemy." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12862/.
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Lo studio riguarda implementazione e calibrazione, mediante software HEC-HMS, di un modello idrologico afflussi-deflussi a scala temporale oraria e a parametri concentrati su un sottobacino del torrente S.Barthelemy (Bacino idrografico Dora Baltea - Valle d'Aosta) allo scopo di valutarne la risorsa idrica disponibile e confrontarla con i dati desumibili dal Piano Tutela acque regionale. I dati di input utilizzati provengono da una centralina di monitoraggio meteo appartenente alla rete regionale (pioggia e temperatura - Stazione Nus-S.Barthelemy - circa 113.000 dati orari) e da una stazione idrometrica privata i cui dati sono stati utilizzati in fase di calibrazione (portate in alveo - circa 38.600 dati orari). Particolare attenzione è stata posta sulla modellazione dello scioglimento nivale, operata mediante Degree-Day Method (modello gradi-giorno) ed alla calibrazione dei parametri dei modelli utilizzati. Si è eseguita inoltre un'analisi di sensitività onde poter verificare quali fossero i parametri più influenti sulla variabilità dell'output del modello. I risultati ottenuti suggeriscono che il bacino studiato sia differente dalla maggioranza dei bacini della regione, a carattere glaciale. Esso mostra infatti uno scioglimento nivale più rapido e minori portate di morbida. Tali effetti sono imputabili a: minore altezza media del bacino, esposizione prevalente a sud, mancanza di ghiacciai/nevai perenni.
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Kaatz, Joel Alan. "Development of a HEC-HMS model to inform river gauge placement for a flood early warning system in Uganda." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/89851.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2014.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 66-67).
Communities in the downstream region of the Manafwa River Basin in eastern Uganda experience floods caused by heavy precipitation upstream. The Massachusetts Institute of Technology (MIT) has partnered with the Red Cross to develop a Flood Early Warning System (FEWS) that will alert downstream communities of imminent flooding. The first step in the development of the FEWS is to determine if the placement of a river gauge upstream from the existing gauge at Busiu Bridge will be capable of providing an early flood warning. A hydrologic model was developed using HEC-HMS software to determine if this warning is feasible and, if so, to facilitate the optimum placement of a gauge. The HEC-HMS model relates precipitation upstream to river flow downstream. Using an historical precipitation event, the model was calibrated to accurately predict the peak hydrograph caused by the precipitation event. The historical storm is characterized by precipitation evenly distributed over the entire watershed that produced a widespread rise in river height, as opposed to a defined flood wave that moves downstream. This storm served the purpose of calibrating the model, and the analysis of this storm concluded that a gauge upstream of Busiu Bridge will not provide flood warning for a storm characterized by precipitation evenly distributed over the watershed. The calibrated model was then used to predict the watershed response to a theoretical storm that is characterized by precipitation concentrated upstream. This upstream precipitation event is more likely to produce an upstream flood wave, and is common in the Manafwa River Basin. It was found that, for a storm with precipitation concentrated upstream, an upstream river gauge could be used to provide a flood warning. This study shows that the ability of an upstream river gauge to issue flood warnings is sensitive to the nature of a storm. The developed model produces hydrographs that can be used in a downstream hydraulic model to determine the optimum location for a river gauge in the Manafwa watershed, and the river conditions that would warrant a flood warning.
by Joel Alan Kaatz.
M. Eng.
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Chagua, Cierto James Zosimo. "Estudio de inundación de la zona correspondiente al distrito de Calango, provincia de Cañete, departamento de Lima, Mediante el uso de los modelos matemáticos HEC-HMS Y HEC-RAS." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2018. http://tesis.pucp.edu.pe/repositorio/handle/123456789/13180.
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La tesis comprende el análisis hidrológico y el análisis hidráulico de la cuenca del río mala
obteniendo como resultado un mapa de inundación en el distrito de Calango, provincia de Cañete,
departamento de Lima.
El desarrollo del mapa de inundación inicia con la delimitación de la cuenca en estudio, la
delimitación de las subcuencas, generación de la red hídrica y de los parámetros geomorfológicos,
todo ello a través del Sistema de Información Geográfica ARCGIS.
El análisis hidrológico comprende desde la recolección de datos de precipitación máxima en 24
horas, pasando por un proceso de corrección recomendado por la Organización Meteorológica Mundial
(OMM), análisis probabilístico de distribución normal, distribución de Gumbel y la distribución
Pearson tipo III, la elaboración de hietograma de diseño por el método de bloques alternos y la
simulación hidrológica a través del modelo matemático HEC-HMS obteniendo como resultado los
caudales de diseño para los periodos de retorno de 100 y 500 años.
Por otro lado, el análisis hidráulico comprende desde el reconocimiento de campo, la generación de
curvas de nivel a través del DEM proporcionado por la NASA, la generación de la trayectoria y de
las secciones del río, las características del canal de río para los valores de coeficiente de
rugosidad de Manning y por último la simulación hidráulica con los caudales de diseños obtenidos en
el análisis hidrológico.
Finalmente, con el análisis hidráulico se obtuvo, a través del ARCGIS, las zonas de inundación.
Para el periodo de retorno de 100 años el área de inundada por el río Mala es de 177,140 m2
equivalente a 17.714 Ha., y para un periodo de retorno de 500 años el área de inundada es de
254,170 m2 equivalente a 25.417 Ha.Tesis
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Corrêa, Mariana Matias Ribeiro. "Contribuição para avaliação e gestão de riscos de inundações. Caso de estudo: bacia hidrográfica do rio Nabão." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10620.
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Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente - Perfil de Gestão e Sistemas AmbientaisA crescente ocorrência de fenómenos extremos, entre os quais se destacam as cheias e inundações, é um problema a nível mundial que, pelo facto de não serem previsíveis, torna essencial aprofundar o seu conhecimento, as suas causas e propor medidas preventivas das consequências que advêm das mesmas. A consciencialização da problemática das cheias e inundações na Europa conduziu ao aparecimento de directrizes europeias que visam minimizar os correspondentes efeitos adversos. Portugal testemunhou, ao longo da sua história, efeitos devastadores de grandes cheias e inundações, com maior frequência de cheias rápidas, devido às características das precipitações que desencadeiam este tipo de cheias e das bacias hidrográficas afectadas. A cidade de Tomar encontra-‐ se particularmente susceptível à ocorrência destes fenómenos hidrológicos, já que é atravessada pelo rio Nabão, com consequências graves nas zonas ribeirinhas, tanto no que diz respeito aos impactes físicos como económicos. Como objectivo principal deste trabalho pretende-‐se a aplicação de um modelo hidrológico - hidráulico ao rio Nabão, com a finalidade de elaborar as cartas de zonas inundáveis no troço crítico do respectivo rio. A metodologia adoptada na presente dissertação constitui um contributo para a preparação e elaboração destas cartas a incorporar nos Planos de Gestão de Riscos de Inundações em Portugal, correspondendo à primeira etapa da gestão destes riscos. As ferramentas utilizadas para a simulação hidrológica e hidráulica do escoamento no rio Nabão foram os modelos HEC-HMS e HEC‐RAS. Ambos os modelos possuem extensões que os integram directamente num Sistema de Informação Geográfica (ArcGIS), possibilitando todo o processamento dos dados geométricos da zona de estudo, assim como a visualização dos resultados obtidos. A cartografia de áreas inundáveis obtida pela aplicação do modelo hidrológico-hidráulico proposto reconhece a importância da informação de base que suporta a elaboração de tais mapas, principalmente no que diz respeito à informação geográfica utilizada.
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Correia, Evaldo Flávio Gomes. "Modelagem hidrológica da bacia hidrográfica do rio Bengalas, Nova Friburgo, RJ, utilizando o potencial de geotecnologias na definição de áreas de risco de inundação." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3736.
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A presente pesquisa concentra-se no estudo hidrológico utilizando o potencial das geotecnologias na modelagem do escoamento na bacia do rio Bengalas, cujo rio principal de mesmo nome, corta o município de Nova Friburgo, RJ, no sentido Sul-Norte. Esse município, um dos mais importantes da região serrana, sofre frequentemente com inundações e deslizamentos, onde, dados históricos e acontecimentos recentes mostram que a ocupação inadequada de encostas e calhas dos rios são as áreas destacada e negativamente afetadas. A metodologia tem suporte no uso de um SIG, extraindo informações, que por sua vez, serão entrada de dados na fase de modelagem, e reforçando a apresentação dos resultados das simulações através de mapas. Ela está divida basicamente em três etapas: "SIG", "Modelagem" e "Suporte à Tomada de Decisão/Simulação". Esse primeiro estudo permitiu compor um banco de dados geográfico com as características fisiográficas da bacia; a seleção criteriosa de uma modelagem matemática e encadeamento de seus parâmetros com os componentes do ciclo hidrológico; realizar a calibração do modelo de transformação chuva-vazão, Soil Conservation Service (CN); e simular a passagem dos volumes gerados pela precipitação efetiva na calha do rio Bengalas, com o objetivo de identificar e analisar as áreas suscetíveis a inundações na porção central da cidade de Nova Friburgo. Modelagem dessa natureza vem sendo empregada, principalmente, no gerenciamento de recursos hídricos, onde a tomada de decisões embasada nos resultados de simulações computacionais, contribuem para evitar prejuízos materiais e financeiros, e ainda, perdas de vidas humanas em áreas de risco, neste caso, aquelas suscetíveis a inundações. Analisando os resultados encontrados temos que a área suscetível à inundação para uma chuva com tempo de recorrência de 50 anos, o mais crítico estudado, seja de aproximadamente 1,0 km, distribuídos nos seus 8,5km na região central de Nova Friburgo-RJ, sendo está, ora delimitada, prioritariamente edificada.This research focuses on the hydrological study using the potential of geotechnology into runoff modeling of the Bengalas Basin, whose main river, with same name, crosses the city of Nova Friburgo - RJ, in a south-north orientation. This city, one of the most important in "Região Serrana", suffers often with floods and landslides, which, historical data and recent events show that the inappropriate occupation of hillsides and margins of rivers are the highlighted and negatively affected areas. The methodology has basis in a GIS application, extracting information, which in turn, are input in the modeling phase, and enhancing the presentation of simulation results through maps. It is basically divided into three stages: "SIG", "Modelagem" and "Suporte à Tomada de Decisão/Simulação." This first study allowed to compose a geographic database with the physiographic features of the basin; the careful selection of a chain of mathematical modeling and its parameters with the hydrological cycle components, perform the calibration of the rainfall-runoff transformation model, Soil Conservation Service (CN) and simulate the transition of volumes generated by an effective precipitation in the Bengalas river, in order to identify and analyze the susceptible flooding areas in the central part of Nova Friburgo. A kind of this modeling has been used, mainly, in the water resource management, in which decision-making are based on results of computer simulations, helps to avoid a range of losses, such as material, financial and, especially, humans, that in this case, people who lives in areas susceptible to flooding. Analyzing the results, it was found that an area susceptible to flooding by a rainfall with a recurrence time of 50 years, the most critical studied, results in approximately 1.0 km, distributed in its 8.5km (central part of Nova Friburgo - RJ) which this bounded area has a great part with buildings.
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Thakali, Ranjeet. "ANALYZING THE EFFECTS OF CLIMATE CHANGE ON URBAN STORMWATER INFRASTUCTURES." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2156.
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The change in the hydrological cycle due to climate change entails more frequent and intense rainfall. As a result, urban water systems will be disproportionately affected by the climate change, especially in such urban areas as Las Vegas, which concentrates its population, infrastructure, and economic activity. Understanding the proper management of urban stormwater in the changing climate is becoming a critical concern to the water resources managers. Proper design and management of stormwater facilities are needed to attenuate the severe effects of extreme rainfall events. In an effort to develop better management techniques and understanding the probable future scenario, this study used the high-resolution climate model data conjunction with advanced statistical methods and computer simulation. Las Vegas Valley which has unique climatic condition and is surrounded by the mountains in every direction was chosen for the study. The North American Regional Climate Change Assessment Program is developing multiple high-resolution projected-climate data from different combinations of regional climate models and global climate models. First, the future design depths was calculated using generalized extreme value method with the aid of L-moment regionalization technique. The projected climate change was incorporated into the model at the 100 year return period with 6h duration depths. Calculation showed that, the projection from different sets of climate model combinations varied substantially. Gridded reanalysis data were used to assess the performance of the climate models. This study used an existing Hydrologic Engineering Center’s Hydrological Modeling System (HEC-HMS) model and Storm Water Management Model (SWMM) developed by the Environmental Protection Agency (EPA) were implemented in the hydrological simulation. Hydrological simulation using HEC-HMS showed exceedances of existing stormwater facilities that were designed under the assumption of stationarity design depth. Low Impact Developments such as permeable pavement and green roof were found to be effective in the attenuation of climate change induced excess surface runoff. The primary purpose of this study is understanding of proper designing, planning and management of the urban stormwater system in the predicted climate scenarios.
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SOUZA, T. C. T. "AVALIAÇÃO DE VAZÕES MÁXIMAS ESTIMADAS A PARTIR DOS MODELOS HEC-HMS E SWMM ESTUDO DE CASO PARA O NÚCLEO URBANO E REGIÃO PERIURBANA DE MUNIZ FREIRE." Universidade Federal do Espírito Santo, 2017. http://repositorio.ufes.br/handle/10/9534.
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Previous issue date: 2017-08-04A determinação da vazão de projeto constitui etapa fundamental para o adequado dimensionamento de obras de drenagem ou para possibilitar a adequada tomada de decisão sobre medidas não estruturais relacionadas com a drenagem pluvial. Em regiões que não dispõem de dados fluviométricos recorre-se, usualmente, à utilização dos modelos do tipo chuva-vazão para determinação indireta da vazão de projeto. Função da diversidade de modelos disponíveis, cabe ao modelador a escolha do modelo mais adequado às singularidades da área avaliada, permitindo a produção de resultados que se apresentem mais próximos da realidade. Neste estudo foi realizada a análise comparativa dos modelos Storm Water Management Model (SWMM) e Hydrologic Engineering Center - Hydrologic Modeling System (HEC-HMS) quando da estimativa de vazões máximas associadas ao núcleo urbano e regiões periurbanas do município de Muniz Freire (ES). A estimativa do escoamento superficial foi realizada através do método Hidrograma Unitário e as perdas de infiltração pelo método SCS Curve Number. A equação de chuvas intensas foi apropriada através do método de Chow-Gumbel e a chuva de projeto pelo método dos blocos alternados. Os modelos apresentaram relevantes diferenças nos valores de vazão de pico e volume de escoamento superficial. Para períodos de retorno entre 2 e 5 anos, os valores de vazão de pico e volumes de escoamento superficial estimados pelo SWMM apresentaram-se superiores aos obtidos pelo HEC-HMS para todas as bacias avaliadas, invertendo-se esta tendência com o aumento do período de retorno. As simulações associadas aos períodos de recorrência de 10 e 20 anos, usualmente utilizados em estudos e projetos de drenagem urbana, foram as que se apresentaram mais próximas, com as menores diferenças relativas para as variáveis hidrológicas avaliadas.
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Wunsch, Matthew John. "Distributed storage modeling in Soap Creek for flood control and agricultural practices." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2426.
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In 1988, the counties of Appanoose, Davis, Monroe, and Wapello created the Soap Creek Watershed Board. This group put in place a plan to fund and construct 154 farm ponds in an effort to provide water for agriculture practices as well as provide flood protection for the residents inside the Soap Creek watershed. Through collaborative efforts and funding from federal, state, and local sources, to date 132 ponds have been constructed.
Currently there is no stream monitoring in place in the watershed to observe stream conditions. This leads to no stored data on the benefits of the projects in the basin and the reduced flood impacts. With funding from the Iowa Watershed Projects (IWP) through the IIHR - Hydroscience & Engineering lab, a lumped parameter surface water model was created to show the benefits of the constructed projects. Using detailed LiDAR data, a Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) model was created. This model used arcHydro and ARC-GeoHMS, tools in ARCgis. Detailed LiDAR, SURGGO soil data, and land cover data was used to create the model parameters. Several design and historical storms were modeled to quantify the benefits in peak flow reductions and in amounts of water stored behind the projects.
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Limbu, Sal Bir. "Estimating Upper Red Butte Watershed Contribution to Salt Lake Valley Water Resources." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7503.
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Water is crucial for domestic, agricultural, industrial, environmental, and hydropower uses. Once precipitation occurs, it eventually partitions into streamflow, evapotranspiration (ET), and groundwater recharge. Distribution of precipitation into these partitions is called a hydrologic budget. The hydrologic budget of any geographic area or watershed under different climate change conditions help water managers to make appropriate water management plans. Computer based hydrologic modeling software has been used extensively to solve many water resources problems including hydrologic budgets. Hydrologic modeling requires high quality weather parameter data.
This study projected surface and groundwater flows from the portion of RBC watershed that lies above Red Butte Reservoir (RBR) to Salt Lake Valley (SLV) for water years (WYs) 2051-2060 in two climatic Representative Concentration Pathways (RCPs) scenarios, RCP 4.5 and RCP 8.5. RCP 8.5 corresponds to the pathways with higher greenhouse gas emission than RCP 4.5. To project flows, we first used Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) 4.3 model to calibrate and validate the observed streamflow for WYs 2016 and 2017 respectively. However, within RBC study area weather stations, all three weather parameters (Precipitation (P), Temperature (T), and Net Radiation (NR)) required for HEC-HMS model were missing on the same day for some periods of WYs 2016-2017. This necessitated to fill the missing parameters prior to the model calibration and validation.
We hypothesized that systematically using ANN and SMs would enable making accurate estimates, even when multiple parameter values are missing on the same day. The hypothesis-estimated the missing weather parameters (P, T, and NR) values are useful for hydrologic modeling in a watershed. We ran the HEC-HMS validated model for WY 2051-2060 once for each RCP scenario, and quantified the flows to SLV. The model results showed that average stream and groundwater flows of WYs 2016 and 2017 were 14.1% and 55.7% of total study area precipitation, respectively. In the future 2051- 2060, compared with average annual surface and groundwater flows of WYs 2016-2017, percent changes in flows, respectively, were i) decreases of 29.6% and 24.2% for RCP 4.5 and ii) decreases of 26% and 23.9 % for RCP 8.5.
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Yener, Mustafa Kemal. "Semi-distributed Hydrologic Modeling Studies In Yuvacik Basin." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607684/index.pdf.
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In this study, Yuvacik Basin, which is located in southeastern part of Marmara Region of Türkiye, is selected as the application basin and hydrologic modeling studies are performed for the basin. Basin is divided into three subbasins such as: Kirazdere, Kazandere, and Serindere and each subbasin is modeled with its own parameters. In subbasin and stream network delineation HEC-GeoHMS software is used and for the hydrologic modeling studies the new version of HEC-HMS hydrologic modeling software released in April 2006 is used. Modeling studies consist of four items: event-based hourly simulations, snow period daily simulations, daily runoff forecast using numerical weather prediction data, and runoff scenarios using intensity-duration-frequency curves. As a result of modeling studies, infiltration loss and baseflow parameters of each subbasin are calibrated with both hourly and daily simulations. Hourly parameters are used in spring, summer and fall seasons
daily parameters are used in late fall, winter and early spring (snowfall and snowmelt period) to predict runoff. Observed runoffs are compared with the forecasted runoffs that are obtained using MM5 grid data (precipitation and temperature) in the model. Goodness-of-fit between forecasted and observed runoffs is promising. Hence, the model can be used in real time runoff forecast studies. At last, runoffs that correspond to different return periods and probable maximum precipitation are predicted using intensity-duration-frequency data as input and frequency storm method of HEC-HMS. These runoffs can be used for flood control and flood damage estimation studies.
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Steinmetz, Alice Alonzo, and Alice Alonzo Steinmetz. "Estimativa de cheias aplicando a técnica de hidrograma unitário com diferentes abordagens de discretização espacial em uma sub-bacia do arroio Pelotas." Universidade Federal de Pelotas, 2017. http://repositorio.ufpel.edu.br:8080/handle/prefix/3690.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
A indispensabilidade de preservação dos recursos hídricos estimula os pesquisadores a procurarem uma melhor compreensão quantitativa do ciclo hidrológico. A escassez de monitoramento hidrológico, confrontada com as grandes dimensões das bacias hidrográficas do Brasil, inviabilizam a mensuração da vazão em bacias de pequeno porte, bem como a análise de seu comportamento ao longo de um curso d’água. No tocante à gestão de cheias em bacias hidrográficas, as séries históricas de vazão são fundamentais para entender a resposta da bacia hidrográfica à ocorrência de eventos de chuvas intensas. A necessidade de dados hidrológicos repercute no desenvolvimento de modelos capazes de estimar hidrogramas de escoamento superficial direto (ESD), elemento de maior relevância para a análise de vazões resultantes de eventos extremos de precipitação. Dentre as técnicas de modelagem do ESD, destacam-se a teoria do Hidrograma Unitário (HU) e do Hidrograma Unitário Instantâneo (HUI). O objetivo principal deste trabalho foi avaliar a aplicabilidade e limitações de modelos de HU sintéticos tradicionalmente empregados na engenharia hidrológica (Triangular-HUT e Adimensional-HUA), além de modelos de HUI conceituais (Nash-HUIN e Clark-HUIC) e de suas versões geomorfológicas (Nash-HUIGN e Clark-HUIGC). Todos os procedimentos relacionados aos modelos de HU e HUI foram conduzidos considerando dois cenários de estudo: modelagem concentrada (cenário 1) e modelagem distribuída (cenário 2). A área de estudo foi a bacia hidrográfica do arroio Cadeia que é uma importante sub-bacia da bacia hidrográfica do arroio Pelotas (BHAP), situada no sul do estado do Rio Grande do Sul. As informações primordiais para a aplicação de tais modelos foram as variáveis topográficas extraídas do modelo digital de elevação e dados temporais de chuva e vazão monitorados na bacia, fazendo uso da rede de monitoramento hidrológico existente na BHAP. Dez eventos chuva-vazão foram analisados e o método do Número da Curva possibilitou estimar a distribuição temporal de precipitações efetivas para ambos os cenários. O processamento computacional constituiu-se da aplicação do software HEC-HMS e da linguagem de programação R para a análise dos modelos de HU e HUI supracitados. Para a calibração dos parâmetros dos modelos, empregou-se o algoritmo Nelder Mead. As principais constatações deste trabalho foram: i) os modelos HUIC e HUIN foram os que tiveram melhor acurácia para estimativa de vazões de pico e dos hidrogramas; ii) as formulações geomorfológicas não são universais e necessitam ser utilizadas com cautela; iii) os modelos ajustados apresentaram desempenho ligeiramente superior quando discretizado por sub-bacia; iv) os modelos que utilizam parâmetros geomorfológicos possuíram melhor desempenho quando aplicada a modelagem concentrada; v) o algoritmo Nelder Mead pode ter aplicação limitada; vi) outros algoritmos devem ser investigados em estudos futuros no intuito de buscar soluções mais adequadas; vii) no cenário 2 foi possível discretizar os parâmetros e relacionar com a realidade hidrológica da bacia em estudo.
The indispensability of preserving water resources encourages researchers to seek a better quantitative understanding of the hydrological cycle. The scarcity of hydrological monitoring in conjunction with the large dimensions of Brazilian watersheds makes it unfeasible to measure stream flow and to analyze its behavior along a watercourse in small-sized watersheds. With regard to flood management in watersheds, historical stream flow series are fundamental to understand the watershed response to the occurrence of heavy rainfall events. The need for hydrological data stimulates the development of models capable of estimating direct surface runoff (DSR) hydrographs, which is the most relevant component when analyzing stream flows originated from extreme rainfall events. Among the techniques available for DSR modeling, the theory of Unit Hydrograph (UH) and Instantaneous Unit Hydrograph (IUH) should be highlighted. The main objective of this study was to evaluate the applicability and limitations of synthetic UH models traditionally used in hydrological engineering (Triangular-TUH and Dimensionless-DUH), conceptual IUH models (Nash-NIUH and Clark-CIUH) and their geomorphological versions (Nash-GNIUH and Clark-GCIUH). All the procedures involving UH and IUH models were carried out taking into account two study scenarios: lumped modeling (scenario 1) and distributed modeling (scenario 2). The study area was the Cadeia river watershed, which is an important subwatershed of the Pelotas river watershed (PRW), located in the south of Rio Grande do Sul State. The main information for the application of such models were topographical variables extracted from digital elevation model and temporal series related to rainfall and stream flow monitored in the watershed, making use of the existing hydrological monitoring network in the PRW. Ten rainfall-runoff events were evaluated and the Curve Number method was used to estimate the temporal distribution of effective rainfalls for both scenarios. The computational processing consisted of the application of both HEC-HMS software and R programming language for analysis of the aforementioned UH and IUH models. Nelder Mead algorithm was employed for calibration of the models’ parameters. The main findings of this study were: i) CIUH and NIUH were the models that had the best accuracy for estimation of peak stream flows and hydrographs; ii) the geomorphological formulations are not universal and need to be used carefully; iii) the adjusted models resulted in slightly superior performance when discretized by sub-basin; iv) the models dependent on geomorphological parameters had better performance when lumped modeling was applied; v) the Nelder Mead algorithm may have limited application; vi) other algorithms should be investigated in future studies in order to seek more adequate solutions; vii) in scenario 2, it was possible to discretize the parameters and relate them to the hydrological reality of the watershed under analysis.
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Redfearn, Howard Daniel. "Rainfall-runoff changes due to urbanization: a comparison of different spatial resolutions for lumped surface water hydrology models using HEC-HMS." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4939/.
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Hydrologic models were used to examine the effects of land cover change on the flow regime of a watershed located in North-Central Texas. Additionally, the effect of spatial resolution was examined by conducting the simulations using sub-watersheds of different sizes to account for the watershed. Using the Army Corps of Engineers, Hydrologic Engineering Center Hydrologic Modeling System (HEC-HMS), two different modeling methods were evaluated at the different sub-watershed resolutions for four rainfall events. Calibration results indicate using the smaller spatial resolutions improves the model results. Different scenarios for land cover change were evaluated for all resolutions using both models. As land cover change increased, the amount of flow from the watershed increased.
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Kingston, William John III. "Hydrologic Modeling of a Probable Maximum Precipitation Event Using HEC-HMS and GIS Models - A Case Study of Two Watersheds in Southern Virginia-." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76812.
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Presented in this thesis is a case study of two study watersheds located in south central Virginia. For each, a HEC-HMS event-based hydrologic model was constructed to simulate the rainfall-runoff response from the Probable Maximum Storm (PMS), the theoretical worst-case meteorological event that is capable of occurring over a particular region. The primary goal of these simulations was to obtain discharge hydrographs associated with the Probable Maximum Flood (PMF) at key locations in each of the watersheds. These hydrographs were subsequently used to develop flood inundation maps of the study areas and to characterize sediment transport phenomena in the study reaches under severe flooding conditions.
To build the hydrologic basin models, ArcHydro, HEC-GeoHMS and ArcGIS were employed to assimilate the substantial amount of input data and to extract the pertinent modeling parameters required for the selected simulation methods. In this, the SCS Loss and Transform Methods, along with the Muskingum Routing Method, were adopted for the HEC-HMS simulations.
Once completed, the basin models were calibrated through a comparison of simulated design storm flows to frequency discharge estimates obtained with regional regression techniques and a flood frequency analysis. The models were then used to simulate their respective PMS events, which were developed following recommendations from the Hydrometeorological Branch of the National Weather Service and the U.S. Army Corps of Engineers.
Descriptions of each of the study sites, explanations of the modeling theory and development methodologies, and discussions of the modeling results are all detailed within.Master of Science
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Brito, Tainara Ramos da Rocha Lins de. "Modelagem hidrológica e hidráulica a partir de dados TRMM aplicada a análise de risco em áreas inundáveis: estudo de caso no município de Atalaia." Universidade Federal de Alagoas, 2017. http://www.repositorio.ufal.br/handle/riufal/1755.
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This work consisted in the analysis of the off-line coupling of hydrological and hydraulic models from observed rainfall data and in the TRMM satellite precipitation intensity estimates in the Paraíba do Meio watershed (AL/PE), with the final objective the mapping of flooded areas and risk analysis of Atalaia-AL city, when considering the flood event occurred in 2010. The main computational programs used were: HEC-HMS in hydrological modeling and HEC-RAS in hydraulic modeling, in addition to their respective extensions integrated with ArcMap in the preprocessing stage, HEC-GeoHMS and HEC-GeoRAS. The results showed that the rainfall intensity data estimated by the TRMM satellite presented a good correlation with the rainfall data series, presenting values of 0.90 ("TRMM" x Postos) and 0.94 ("TRMM + Postos" x Postos). The hydrological model presented a good representation in relation to flood events in the Paraíba do Meio watershed, from data the flood occurred in 2000 and the flood of 2010. The validation of the model presented satisfactory results in the Atalaia post (39870000) in relation to the corrected satellite series ("TRMM + Postos"), evidencing with a Nash Sutcliffe coefficient - COE of 0.91. The hydraulic modeling was calibrated based on the Manning coefficient (n) adjustment for the banks and bottom of the channel, based on the ENGEMAP field markings and the peak flow recorded during the 2010 event by the fluviometric Atalaia post (39870000), already the model validation was done from the calibrated Manning coefficient (n) and the hydrograph generated in the hydrological simulation based on the corrected satellite series TRMM ("TRMM + Postos"). Thus, the mapping of the flooded areas made based on the 2010 flood data allowed a Risk Analysis in Atalaia city, based on the threat and vulnerability of the resident population in the riverine region to the occurrence of floods.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Este trabalho consistiu na análise do acoplamento “off-line” de modelos hidrológico e hidráulico a partir de dados de precipitação observada e nas estimativas de intensidade de precipitação do satélite TRMM em relação à bacia hidrográfica do rio Paraíba do Meio (AL/PE), tendo como objetivo final o mapeamento das áreas inundáveis e análise de risco do município de Atalaia-AL, ao considerar o evento de cheia ocorrido em 2010. Os principais programas computacionais empregados foram: o HEC-HMS na modelagem hidrológica e o HEC-RAS na modelagem hidráulica, além de suas respectivas extensões integradas ao ArcMap na etapa do pré-processamento, HEC-GeoHMS e HEC-GeoRAS. Os resultados mostraram que as intensidades pluviométricas estimadas pelo satélite TRMM apresentaram boa correlação com a série de dados dos pluviômetros, com valores de 0,90 (“TRMM” x Postos) e de 0,94 (“TRMM+Postos” x Postos). O modelo hidrológico demonstrou uma boa representatividade em relação a eventos de cheia na bacia, a partir de dados da cheia ocorrida em 2000 e da cheia de 2010. A validação do modelo hidrológico demonstrou resultados satisfatórios no posto Atalaia (39870000) para a série corrigida do satélite (“TRMM+Postos”), exibindo um coeficiente de eficiência de Nash Sutcliffe – COE – de 0,91. A modelagem hidráulica teve sua calibração baseada no ajuste do coeficiente de Manning (n) para as margens e fundo do canal, com base nas marcas de cheia levantadas em campo pela ENGEMAP e pela vazão de pico registrada no posto Atalaia (39870000) durante o evento de 2010, já a validação do modelo partiu do coeficiente de Manning (n) calibrado e do hidrograma gerado na simulação hidrológica a partir da série corrigida do satélite TRMM (“TRMM+Postos”). Por fim, o mapeamento das áreas inundadas, permitiu uma Análise de Risco no município de Atalaia baseada na análise da vulnerabilidade social e das ameaças às quais a população residente às margens do rio está exposta diante da ocorrência de eventos de inundação.
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Sun, Jingyun. "Hydrologic and hydraulic model development for flood mitigation and routing method comparison in Soap Creek Watershed, Iowa." Thesis, University of Iowa, 2015. https://ir.uiowa.edu/etd/1914.
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The primary objective of this thesis is to develop hydrologic and hydraulic models for the Soap Creek Watershed, IA for the evaluation of alternative flood mitigation strategies and the analysis of the differences between hydrologic and hydraulic routing methods.
In 2008, the state of Iowa suffered a disastrous flood that caused extensive damage to homes, agricultural lands, commercial property, and public infrastructures. To reduce the flood damage across Iowa, the U.S. Department of Housing and Urban Development (HUD) awarded funds to the Iowa Flood Center and IIHR-Hydroscience &Engineering at the University of Iowa to conduct the Iowa Watersheds Project. The Soap Creek Watershed was selected as one of the study areas because this region has suffered frequent severe floods over the past century and because local landowners have organized to construct over 130 flood detention ponds within it since 1985.
As part of the Iowa Watersheds Project, we developed a hydrologic model using the
U.S. Army Corps of Engineers’ (USACE) Hydrologic Center’s hydrologic Modeling System (HEC-HMS). We used the hydrologic model to evaluate the effectiveness of the existing flood mitigation structures with respect to discharge and to identify the high runoff potential areas. We also investigated the potential impact of two additional flood mitigation practices within the Soap Creek Watershed by utilizing the hydrologic model, which includes changing the land use and improving the soil quality. The HEC-HMS model simulated 24-hour design storms with different return periods, including 10, 25, 50, and 100 year. The results from modeling four design storms revealed that all three practices can reduce the peak discharge at different levels. The existing detention ponds were shown to reduce the peak discharge by 28% to 40% depending on the choice of observed locations and design storms. However, changing the land use can reduce the peak discharge by an average of only 1.0 %, whereas improving the soil quality can result in an average of 15 % reduction.
Additionally, we designed a hydraulic model using the United States Army Corps of Engineers’ (USACE) Hydrologic Engineering Center’s River Analysis System (HEC- RAS) to perform a comparative evaluation of hydrologic and hydraulic routing methods. The hydrologic routing method employed in this study is the Muskingum Routing method. We compare the historical and design storms between HEC-HMS, HEC-RAS, and observed stage hydrographs and take the hydrograph timing, shape, and magnitude into account. Our results indicate that the hydraulic routing method simulates the hydrograph shape more effectively in this case.
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Sales, Raquel Jucà de Moraes. "Estudos HidrÃulicos e HidrolÃgicos de Amortecimentos de Cheias do Riacho AlagadiÃo, Fortaleza, CE." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=6176.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorRecently, engineering researches which deal with urban drainage are proposing the use of computational tools in order to anticipate peak discharges of watersheds and the hydraulic behavior of drainage network system. The use of hydrological and hydraulic computer modeling ensures the minimization of errors in the engineering design process, as well as an increase in quality of the drainage planning work.Therefore, the actual study uses two well know drainage computer codes HEC-HMS and SWMM to design structures to decrease discharge peaks in a watershed situated in a critical area of Fortaleza with respect to floods.This watershed is located west of the city of Fortaleza and at drains the AlagadiÃo stream, which is also the name of the basin. Computer simulation were performed using return periods of 20, 50 e 100 year with and without the presence of dams using both HEC-HMS andSWMM.It was proposed three dams and they were simulated separately and altogether.Result of the simulation showed that the presence of only two dams, caused a significant decrease in flood peaks. According the HEC-HMS this reduction was 24%. According to SWMM, this reduction was 42%. This study is a contribution to the use of computer models in designing urban flood control structures.
Nos Ãltimos anos, pesquisas que envolvem o tema drenagem urbana vÃm introduzindo substancialmente a idÃia do uso de modelos computacionais que simulam os picos de cheias das bacias hidrolÃgicas e o comportamento hidrÃulico da rede de drenagem da bacia. Com o uso da modelagem hidrÃulico-hidrolÃgica podem ser minimizados erros de dimensionamento de projeto, bem como otimizar o planejamento de obras de infra-estrutura com modelos mais detalhados e com menores incerteza, aumentando o nÃvel de confiabilidade da obra. Assim sendo, nesta pesquisa foram escolhidos dois softwares, jà bastante conceituados nos estudos de drenagem urbana, o HEC-HMS e o SWMM, para a anÃlise das suas aplicabilidades no estudo hidrÃulico-hidrolÃgico de amortecimento de cheias em uma das Ãreas crÃticas sujeitas a alagamento no municÃpio de Fortaleza. A Ãrea està localizada a oeste da cidade, e à delimitada pelas Ãreas de contribuiÃÃo do riacho AlagadiÃo, que dà nome a bacia do estudo. Intencionando a atenuaÃÃo dos picos de chuva da Ãrea, foram feitas simulaÃÃes com e sem o uso de reservatÃrios de detenÃÃo para os tempos de recorrÃncia de 20, 50 e 100 anos. Para tanto foram testados o uso de trÃs reservatÃrios em possÃveis pontos de acoplamento, onde foram feitas aplicaÃÃes sem o uso de reservatÃrios, com o uso dos trÃs reservatÃrios separadamente, em pares e em conjunto os trÃs. Dos resultados, observou-se que apenas dois dos reservatÃrios obtiveram uma diminuiÃÃo considerÃvel para a minimizaÃÃo dos problemas de inundaÃÃo da bacia do riacho AlagadiÃo, sendo obtida uma reduÃÃo do pico de cheias de atà 24%, segundo os resultados do HEC-HMS e 42% pelos dados do SWMM, utilizando os dois em conjunto. Por fim, confirma-se a credibilidade no uso das ferramentas computacionais HEC-HMS e SWMM em obras de infra-estrutura urbana, com nÃveis bastante relevantes de detalhamento da bacia. Este estudo à um passo inicial para o desenvolvimento de novos projetos de infra-estrutura como o uso de modelos computacionais hidrÃulico-hidrolÃgicos.
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Drake, Chad Walter. "Assessment of flood mitigation strategies for reducing peak discharges in the Upper Cedar River watershed." Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/4617.
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This thesis evaluates the effectiveness of several flood mitigation strategies for reducing peak discharges in the Upper Cedar River Watershed located in northeast Iowa. Triggered by record flooding in June 2008, the Iowa Watersheds Project was formed to evaluate and construct projects for flood reduction. The Upper Cedar was selected as a pilot watershed and a hydrologic assessment was performed to better understand its flood hydrology. Evaluation of different flood mitigation strategies was performed with HEC-HMS, a lumped parameter surface water model. The hydrologic model development is described and the model applications are analyzed.
The HMS model was used in several ways to better understand the flood hydrology of the Upper Cedar River Watershed. First, the runoff potential of the basin was assessed to identify the primary runoff generation mechanisms. Areas with agricultural land use and moderately to poorly draining soils had the highest runoff potential. Following, the model was used to evaluate the impact of several flood mitigation strategies - increased infiltration through land use changes, increased infiltration through soil improvements, and added storage in the watershed to hold runoff temporarily and reduce downstream flood peaks - for different flood frequency events (the 10-, 25-, 50-, and 100-year, 24-hour design rain storms) and the June 2008 flood. Although each scenario is hypothetical and simplified, they do provide benchmarks for the types of reductions physically possible and the effectiveness of strategies relative to one another. In order to reduce the impacts of flooding in the Upper Cedar, a combination of projects that enhance infiltration and/or store excess runoff will be necessary.
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Ahn, Gi-Choul. "The effect of urbanization on the hydrologic regime of the Big Darby Creek watershed, Ohio." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1187107900.
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Teixeira, Laís Coelho. "Caracterização hidrossedimentométrica de uma pequena bacia hidrográfica e balanço sedimentométrico no reservatório do Vacacaí Mirim." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/7651.
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Fundação de Amparo a Pesquisa no Estado do Rio Grande do SulThe sediment yield causes a number of problems, and among them stands out silting of rivers and reservoirs, and contamination of surface water. Sediments result from the processes of erosion, transport, storage and compression. They depend on the physical characteristics of the watershed, as well as soil use and land cover. To study the sediment yield of a river is important to estimate the amount and origin of the sediments transported and deposited in a watershed. Therefore, it is possible to obtain knowledge about the unit of study, which leads to better planning and use of water resources. From liquid and solid discharge measurements in a river section, and conducting a sedimentometrical balance in Vacacaí Mirim reservoir, located at Santa Maria, Rio Grande do Sul, Brazil, the objective of this research is to characterize the sediment yield of a small watershed. The methodology was based on two stages: the first one was about the sedimentometrical characterization of the study area, and it was carried out between January and November of 2014, with the continuous monitoring of flow and sediments in fluviossedimentometrical station João Goulart, whose laboratory samples were also characterized and had their sediment concentration determined; the second stage was about the execution of sedimentometrical balance in the reservoir with the help of HEC-HMS 4.0 modeling program. Sediment entries, storage and output were checked in Vacacaí Mirim reservoir, which influences the study area. The results for the hydrossedimentometrical monitoring were satisfactory, getting a key curve with determination coefficient of 0.96; sedimentometrical curves ranged from 0.93 to 0.98; concentration ratio between suspended sediment and turbidity was 0.84, being considered acceptable; particle size characteristics were predominantly silt, for suspended material, and sand, for dragged material. Balance calibration for sedimentometrical hydrologic model gave a Nasch-Sutcliffe between 0.13 to 0.53 and 0.44 in validation; about reservoir sediments balance, it was noted and therefore considered that all sediment that enters the reservoir is retained and more sediment is produced downstream thereof mouth of the river it reaches the watershed.
A produção de sedimentos ocasiona uma série de problemas, entre eles destacam-se assoreamento dos rios e reservatórios e contaminação das águas superficiais. Os sedimentos são resultado dos processos de erosão, transporte, depósito e compactação. Dependem das características físicas da bacia hidrográfica e do uso e ocupação do solo. Estudar a produção de sedimentos em um rio é importante para estimar a quantidade e a origem dos sedimentos transportados e depositados em uma bacia hidrográfica, podendo assim, obter conhecimento da unidade de estudo e realizar um melhor planejamento e aproveitamento dos recursos hídricos. O objetivo desta pesquisa é de caracterizar a produção de sedimentos de uma pequena bacia hidrográfica, a partir de medições de descarga líquida e sólida na seção do rio e realizar um balanço sedimentométrico no reservatório do Vacacaí Mirim no município de Santa Maria. A metodologia se baseou em duas etapas: primeira etapa foi à realização da caracterização sedimentométrica da área de estudo com o monitoramento contínuo das vazões e sedimentos na estação fluviossedimentométrica João Goulart no período de janeiro a novembro de 2014 e na determinação da concentração de sedimentos e caracterização das amostras em laboratório; a segunda etapa foi à realização do balanço sedimentométrico no reservatório com o auxílio do programa de modelagem HEC-HMS 4.0 onde foram verificados as entradas, armazenamento e saída de sedimentos no reservatório Vacacaí Mirim que influencia a área de estudo. Os resultados obtidos para o monitoramento hidrossedimentométrico foram satisfatórios, obtendo uma curva-chave com coeficiente de determinação de 0,96; as curvas sedimentométricas variando de 0,93 a 0,98; a relação da concentração de sedimentos em suspensão e a turbidez foi de 0,84 sendo consideradas aceitáveis; as características granulométricas do material em suspensão foi predominante o silte e para o material em arraste foi à areia. Para o balanço sedimentométrico a calibração hidrológica do modelo obteve-se um Nasch-Sutcliffe entre 0,13 a 0,53 e na validação de 0,44; as considerações observadas no balanço de sedimentos no reservatório foram que todo o sedimento que entra fica retido no reservatório e é produzido mais sedimentos a jusante do mesmo que chega até o exutório da bacia.
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Miranda, Olga Lopes. "Comparação dos modelos hidráulicos HEC-RAS e LISFLOOD-FP na avaliação do risco de inundação num troço do rio Lis." Master's thesis, Universidade de Évora, 2011. http://hdl.handle.net/10174/15037.
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A avaliação do risco de inundação surge como medida de mitigação da vulnerabilidade da comunidade à ocorrência de eventos hidrológicos extremos. Os objectivos principais do presente estudo são a apresentação e âmbito de aplicação de seis modelos hidráulicos, disponíveis no mercado, e a comparação da aplicação dos modelos LISFLOOD-FP e HEC-RAS na avaliação do risco de inundação, num troço de 4 km do Rio Lis, entre a ponte de Miguel e a ponte da Bajanca. Na aplicação ao troço do Rio Lis foi efectuada a caracterização fisiográfica da bacia hidrográfica, com recurso aos sistemas de informação geográfica. No cálculo do caudal centenário aplicou-se o modelo hidrológico HEC-HMS. Após a preparação dos dados de entrada nos modelos escolhidos foram obtidas as zonas inundáveis para o troço em estudo e comparados os resultados. A avaliação do risco de inundação efectuada teve em atenção os termos do Decreto-Lei n.º 115/2010, de 22 de Outubro; ABSTRACT:Flood risk assessment comes up as a mitigation measure of the community vulnerability to the occurrence of extreme hydrological events. The main aims of the current study are the presentation and scope of six hydraulic models available in the market and the comparison of application of the models LISFLOOD-FP and HEC-RAS in a 4 km reach of the River Lis, between bridge of Miguel and bridge of Bajanca. It was made a description of the physiographic features of the River Lis watershed with the support of geographic information systems. To estimate the discharge for a storm event of 100 years it was applied the model HEC-HMS. After preparing the input data of the two models the delineation of the study area was obtained and the results were compared. The flood risk assessment took into account the terms of Portuguese law.
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Abushandi, Eyad. "Rainfall-runoff modeling in arid areas." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-68530.
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The Wadi Dhuliel catchment/ North east Jordan, as any other arid area has distinctive hydrological features with limited water resources. The hydrological regime is characterized by high variability of temporal and spatial rainfall distributions, flash floods, absence of base flow, and high rates of evapotranspiration. The aim of this Ph.D. thesis was to apply lumped and distributed models to simulate stream flow in the Wadi Dhuliel arid catchment. Intensive research was done to estimate the spatial and temporal rainfall distributions using remote sensing. Because most rainfall-runoff models were undertaken for other climatic zones, an attempt was made to study limitations and challenges and improve rainfall-runoff modeling in arid areas in general and for the Wadi Dhuliel in particular.
The thesis is divided into three hierarchically ordered research topics. In the first part and research paper, the metric conceptual IHACRES model was applied to daily and storm events time scales, including data from 19 runoff events during the period 1986-1992. The IHACRES model was extended for snowfall in order to cope with such extreme events. The performance of the IHACRES model on daily data was rather poor while the performance on the storm events scale shows a good agreement between observed and simulated streamflow. The modeled outputs were expected to be sensitive when the observed flood was relatively small. The optimum parameter values were influenced by the length of a time series used for calibration and event specific changes.
In the second research paper, the Global Satellite Mapping of Precipitation (GSMaP_MVK+) dataset was used to evaluate the precipitation rates over the Wadi Dhuliel arid catchment for the period from January 2003 to March 2008. Due to the scarcity of the ground rain gauge network, the detailed structure of the rainfall distribution was inadequate, so an independent from interpolation techniques was used. Three meteorological stations and six rain gauges were used to adjust and compare with GSMaP_MVK+ estimates. Comparisons between GSMaP_MVK+ measurements and ground rain gauge records show distinct regions of correlation, as well as areas where GSMaP_MVK+ systematically over- and underestimated ground rain gauge records. A multiple linear regression (MLR) model was used to derive the relationship between rainfall and GSMaP_MVK+ in conjunction with temperature, relative humidity, and wind speed. The MLR equations were defined for the three meteorological stations. The ‘best’ fit of the MLR model for each station was chosen and used to interpolate a multiscale temporal and spatial distribution. Results show that the rainfall distribution over the Wadi Dhuliel is characterized by clear west-east and north-south gradients. Estimates from the monthly MLR model were more reliable than estimates obtained using daily data. The adjusted GSMaP_MVK+ dataset performed well in capturing the spatial patterns of the rainfall at monthly and annual time scales, while daily estimation showed some weakness for light and moderate storms.
In the third research paper, the HEC-HMS and IHACRES rainfall runoff models were applied to simulate a single streamflow event in the Wadi Dhuliel catchment that occurred in 30-31.01.2008. Both models are considered suitable for arid conditions. The HEC-HMS model application was done in conjunction with the HEC-GeoHMS extension in ArcView 3.3. Streamflow estimation was performed on hourly data. The aim of this study was to develop a new framework of rainfall-runoff model applications in arid catchment by integrating a re-adjusted satellite derived rainfall dataset (GSMaP_MVK+) to determine the location of the rainfall storm. Each model has its own input data sets. HEC-HMS input data include soil type, land use/land cover map, and slope map. IHACRES input data sets include hourly rainfall and temperature. The model was calibrated and validated using observed stream flow data collected from Al-Za’atari discharge station. IHACRES shows some weaknesses, while the flow comparison between the calibrated streamflow results agrees well with the observed streamflow data of the HEC-HMS model. The Nash-Sutcliffe efficiency (Ef) for both models was 0.51, and 0.88 respectively. The application of HEC-HMS model in this study is considered to be satisfactory.
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Palomino, Ramírez Vani, and Estrada Luis Ricardo Mauricio. "Modelamiento hidrológico e hidráulico para un sistema de alerta temprana en la quebrada Cashahuacra, distrito de Santa Eulalia." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626417.
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El presente trabajo consiste en el modelamiento hidrológico e hidráulico de la quebrada Cashahuacra ubicada en el distrito de Santa Eulalia con el fin de proponer la estructura de un sistema de alerta temprana que integre estos modelos para evitar la pérdida, primordialmente, de vidas humanas.
Se presenta una síntesis de los principales eventos de flujo de detritos ocurridos en dicho lugar así como un marco teórico que aborda conceptos básicos relacionados al estudio de la hidrología e hidráulica.
Para el modelo hidrológico, se llevó a cabo la caracterización de la quebrada Cashahuacra y se obtuvo sus parámetros principales, así también, fue necesario la adquisición de los datos históricos de precipitación. De esta manera, el modelo hidrológico fue realizado con el software HEC-HMS versión 4.2 en colaboración con ArcGIS versión 10.2.1. y su extensión HEC-GeoHMS. Así, se pudo determinar los caudales máximos bajo los periodos de retorno de 5, 10, 20, 50, 100, 200 y 500 años.
El modelo hidráulico fue desarrollado con el software FLO-2D versión PRO. Tuvo como parámetros de entrada al hidrograma calculado por el modelo hidrológico, a la topografía digital del terreno, y a parámetros reológicos como la viscosidad y el esfuerzo de cedencia. Luego, fueron obtenidas las velocidades y profundidades máximas de los periodos de retorno mencionados líneas arriba.
Finalmente, se ha integrado estas dos modelaciones en la estructura de un sistema de alerta temprana frente a huaycos y se ha sugerido la implementación de un radar meteorológico para la quebrada en estudio.The present work consists of hydrological and hydraulic modeling of the Cashahuacra stream located in the Santa Eulalia district in order to propose the structure of an early warning system that integrates these models to avoid the loss, primarily of human lives. A synthesis of the main debris flow events occurring in that place is presented as well as a theoretical framework that addresses basic concepts related to the study of hydrology and hydraulics. For the hydrological model, the characterization of the Cashahuacra stream was carried out and its main parameters were obtained, as well as the acquisition of the historical precipitation data. In this way, the hydrological model was made with the HEC-HMS software version 4.2 in collaboration with ArcGIS version 10.2.1. and its HEC-GeoHMS extension. Thus, it was possible to determine the maximum flow rates under the return periods of 5, 10, 20, 50, 100, 200 and 500 years. The hydraulic model was developed with the FLO-2D PRO version software. It had as input parameters to the hydrograph calculated by the hydrological model, to the digital topography of the land, and to rheological parameters such as viscosity and yield strength. Then, the maximum speeds and depths of the return periods mentioned above were obtained. Finally, these two models have been integrated into the structure of an early warning system against hurricanes and the implementation of a meteorological radar for the stream under study has been suggested.
Tesis
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Moreira, Adolfo Ãtila Cabral. "Modelagem hidrolÃgica da bacia hidrogrÃfica do rio granjeiro â Crato-CE: composiÃÃo do cenÃrio atual e simulaÃÃes de uso e ocupaÃÃo do solo." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10772.
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nÃo hÃO trabalho apresenta um modelo hidrolÃgico inÃdito para a bacia hidrogrÃfica do rio Granjeiro (BHG), com uma Ãrea de contribuiÃÃo de 18,54 kmÂ, altitude variando de 399 a 953 metros acima do nÃvel do mar, localizada no municÃpio do Crato, regiÃo sul do estado do CearÃ, regiÃo de grande relevÃncia econÃmica no estado, destacando-se o comÃrcio e o turismo. O modelo foi desenvolvido utilizando o software HEC-HMS do Centro de Engenharia HidrolÃgico (CEIWR-HEC), do corpo de engenheiros do exercito dos Estados Unidos da AmÃrica (USACE). A metodologia utilizada foi composta por trÃs partes. A primeira parte tratou de extrair os dados geogrÃficos, fÃsicos e hidrolÃgicos, utilizando modelos digitais de elevaÃÃo, imagens de satÃlites e mapas temÃticos de caracterizaÃÃo territorial do estado do CearÃ, por meio do software ArcGIS e sua extensÃo HEC-GeoHMS, para exportÃ-los para o HEC-HMS. A segunda parte se concentrou na construÃÃo dos hietogramas, utilizando a equaÃÃo de chuva do municÃpio do Crato e o mÃtodo dos blocos alternados. E por fim, na terceira etapa foi simulado o escoamento superficial, provocado por chuvas com vÃrios tempos de retornos, tanto para o cenÃrio atual, quanto para vÃrios cenÃrios fictÃcios da BHG, utilizando o mÃtodo desenvolvido pelo ServiÃo de ConservaÃÃo do Solo (SCS) do Departamento de Agricultura dos Estados Unidos (USDA), conhecido como o modelo SCS. Verificou-se que as Sub-bacias SB4, SB5 e SB9 contribuem com 46% do escoamento total no exutÃrio, alÃm de um crescimento de ocupaÃÃo da BHG em 15%, praticamente dobrarà a probabilidade de cheias no canal do rio Granjeiro, enquanto a diminuiÃÃo desta ocupaÃÃo em 15%, praticamente reduz a possibilidade de cheias no canal do rio Granjeiro pela metade. Contudo, à importante frisar, que o modelo hidrolÃgico apresentado à o primeiro modelo elaborado para a BHG, dando aos gestores municipais do Crato a possibilidade de estudar a construÃÃo de obras hidrÃulicas para contenÃÃo das cheias, alÃm de implementaÃÃo de polÃticas pÃblicas de ocupaÃÃo das Ãreas em contidas na BHG, com o objetivo de reduzir as enchentes ocorridas no canal do rio Granjeiro.
The paper proposes a novel model for hydrological river basin Granjeiro (BHG), with a contribution area of 18.54 kmÂ, altitude ranging 399-953 meters above sea level, located in the county of Crato, southern the state of Cearà of great economic importance in the state, especially trade and tourism. The model was developed using the software HEC-HMS Hydrologic Engineering Center (CEIWR-HEC), the engineer corps of the army of the United States (USACE). The methodology used was composed of three parts. The first part dealt with data extraction geographic, physical and hydrological using digital elevation models, satellite images and thematic maps of territorial characterization of the state of CearÃ, through the ArcGIS software and its extension HEC-GeoHMS to export them for HEC-HMS. The second part focused on building the hietogramas, using the equation of rain Crato and the method of alternating blocks. And finally, the third step was simulated runoff caused by rain several times with returns, both for the current scenario, as for several fictional scenarios BHG, using the method developed by the Soil Conservation Service (SCS) Department of Agriculture (USDA), known as the SCS model. It was found that the sub-basins SB4, SB5 and SB9 contribute 46% of the total flow in river mouth, end an increase in occupancy of BHG 15%, nearly double the likelihood of flooding in the river channel Granjeiro, while this occupation decreased by 15 %, almost reduces the likelihood of flooding in the river channel Granjeiro by half. However, it is important to note that the hydrological model presented is the first model designed for BHG, giving municipal managers Crato the possibility to study the construction of hydraulic containment of floods, as well as implementation of policies of occupation of areas contained in BHG, with the goal of reducing the flooding that occurred in the river channel Granjeiro.
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Shurtz, Kayson M. "Automated Calibration of the GSSHA Watershed Model: A Look at Accuracy and Viability for Routine Hydrologic Modeling." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd3262.pdf.
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Castillo, Luicho Giancarlo Roberto, and Cornejo Shamir Omar Ramírez. "Estudio hidrológico e hidráulico para el diseño del puente Pucayacu, localizado en el tramo: Mayocc – Huanta en la progresiva 3+200, aplicando los softwares HEC-HMS e Iber V2.0." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2017. http://hdl.handle.net/10757/621675.
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Realiza un estudio hidrológico e hidráulico para el diseño del puente Pucayacu, el cual se localiza en el tramo Mayocc-Huanta en la progresiva 3+200. Para ello, se hará uso de los software HEC-HMS e IBER v2.0. De esta manera, se planteó la determinación de una cota mínima de fondo de viga de tablero y una cota máxima de socavación en las cimentaciones. Para llegar a dichos puntos, se plantean cinco capítulos. El primer capítulo abarco la introducción al proyecto en sí, especificando aspectos generales, la metodología para el diseño del puente, objetivos de la investigación y la ubicación del proyecto. El segundo capítulo aborda la parte conceptual que se utilizará para realizar los cálculos. Este capítulo se dividió en Hidrología, Hidráulica, Aspectos normativos referentes a puentes y la presentación de los softwares que se emplearon para el desarrollo de la tesis. El tercer capítulo detalló la recopilación de datos, esto incluye la información cartográfica, pluviométrica, batimétrica, evaluación de estudio de suelos y análisis de información de cobertura vegetal. Con respecto al cuarto capítulo, se presentó todos los cálculos realizados tanto para la hidrología como la hidráulica. En el quinto capítulo, se presentó las conclusiones y recomendaciones, así como el resultado final que es la cota mínima de fondo de viga de tablero y la cota máxima para Universidad Peruana de Ciencias Aplicadas – UPC Facultad de Ingeniería Civilcimentaciones.
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Soytekin, Arzu. "Evaluating The Use Of Satellite." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612542/index.pdf.
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For the process of social and economic development, hydropower energy has an important role such as being renewable, clean, and having less impact on the environment. In decision of the hydropower potential of a study area, the preliminary condition is the availability of the gages in the area. However, in Turkey, the gages in working order are limited and getting decreased in recent years. Therefore, the satellite based precipitation estimates has been gaining importance to predict runoff for ungauged basins. In this study, Çoruh basin, which is located in the north-eastern part of Turkey, is selected to perform hydrologic modeling. The input precipitation data for the model are provided from the observations at meteorological stations and the Tropical Rainfall Measuring Mission (TRMM) satellite products (3B42 and 3B43). TRMM satellite is used to monitor and study the rainfall distribution. The precipitation radar on the TRMM is the first radar to make precipitation estimation from the space. Using both precipitation data, HEC-HMS, being well known hydrological model, is applied to the Ç
oruh Basin for 2005 and 2003 water years. To distinguish the differences in the runoff simulations and water budget, comparisons are done with respect to flow monitoring stations. Statistical criteria show that model simulation results obtained from TRMM 3B42 products are promising in estimating the water potential in ungauged basins.
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Fiúza, Fernanda Alexandra Firmino. "Regras de operação do reservatório de Magos para controlo de cheias." Master's thesis, Universidade de Évora, 2010. http://hdl.handle.net/10174/19067.
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Face à Directiva 2007/60/CE relativa à avaliação e gestão do risco de inundações, ao Decreto-Lei nº 344/2007 que aprova o Regulamento de Segurança de Barragens, ao aumento de áreas urbanizadas e às projecções dos modelos de clima para o fim do século, que apontam para o aumento da frequência e da intensidade da ocorrência de inundações causadas por eventos de precipitação intensa de curta duração, é crucial a definição de regras de operação nos reservatórios com controlo de cheias. O Reservatório de Magos pertence à bacia hidrográfica do rio Tejo, está situado no Concelho de Salvaterra de Magos e tem como usos principais a rega e o controlo de cheias. Este trabalho tem como objecto de estudo a definição das regras de operação (restrição no caudal descarregado) do Reservatório de Magos para controlo de cheias no troço a jusante. São aplicados o modelo hidrológico HEC-HMS 3.1.0, o modelo hidráulico HEC-RAS 3.1.3 e o modelo de simulação de reservatórios HEC-ResSim 3.O para o cálculo do hidrograma de cheia, da zona inundável e para simulação do balanço de água no reservatório, respectivamente. Como resultado são apresentadas as regras de operação (caudal máximo e mínimo a descarregar) do Reservatório de Magos para controlo da zona inundável a jusante, no caso de um evento de cheia. /ABSTRACT: Based on the Directive 2007/60/CE related to the Assessment and Management of Flood Risks, on the Decree-Law n. o 344/2007 which approves the Regulation for Dam Safety, the increased urban areas and to the projections of climate models by the end of the century which is pointing to an increased frequency and intensity of occurrence of floods caused by intense rainfall events of short duration, establishing rules of operation for flood control in reservoirs becomes crucial. The Magos Reservoir belongs to the river Tagus basin, located in the county of Salvaterra de Magos and has as its main uses the irrigation and flood control. This study aims to establish the rules of operation (flow discharged restriction) of the Reservoir of Magos for flood control in the downstream reach. The methodology used in the present work includes the application of the Hydrological model HEC-HMS 3.1.0, the Hydraulic model HEC-RAS 3.1.3 and a reservoir simulation model HEC-ResSim 3.0 to calculate the hydrograph of peak discharge, floodplain zone and simulate reservoir operations, respectively. As a result, the rules of operation (maximum flow and minimum discharge) of Magos Reservoir for flood control in a downstream reach in case of flood event are presented.
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Puelles, Maza Juan Carlos. "Estudio hidráulico e hidrológico de la Cuenca Alto Perú y el Porvenir en el asentamiento humano Las Mercedes Alto Perú, distrito de la Oroya, provincia de Yauli – Junín para la construcción futura de obras de arte ante amenazas de derrumbes provocado por la crecida del río, mediante el uso de los modelos matemáticos Hec-Hms y Hec-Georas." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2015. http://hdl.handle.net/10757/620953.
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Plantea soluciones para poder mitigar los daños provocados por la crecida de agua de las quebradas Alto Perú y El Porvenir, las cuales afecta al Asentamiento Humano Las Mercedes y Norman King ubicadas en el distrito de la Oroya, Provincia de Yauli – Junín.
Para poder determinar las soluciones en esta zona, se ha desarrollado un estudio hidráulico e hidrológico de las quebradas en mención.
El estudio hidrológico consiste en estimar las descargas máximas a partir de reporte de precipitaciones máximas en 24 horas registradas en las estaciones cercanas al lugar , para periodos de retorno de 100,200 y 500 años a través de un análisis de frecuencia para lo cual empleamos el programa HIDROESTA , cuyo autor es el Ing. Máximo Villón Béjar .
Además, para determinar los caudales máximos que comprende el estudio hidrológico se realizó la caracterización de la cuenca y con la ayuda del Software HEC-HMS, del cuerpo de la armada de los Estados Unidos, se realizó un modelamiento de la cuenca, con la finalidad de tener resultados más reales.
Por otro lado, el modelamiento hidráulico de la zona se desarrolló con el Software HEC-RAS de los mismos autores del HEC-HMS, el cual permite obtener los niveles de agua máximos en las quebradas mencionadas. Dicho Software, necesita como información las secciones transversales de la quebrada, por ello se realizó un levantamiento topográfico de las mismas.
Para poder plantear soluciones en la zona de estudio se realizó un estudio de socavación con la finalidad de estudiar la acción erosiva del agua. Para ello se extrajeron calicatas y mediante métodos teóricos se logró determinar la altura de socavación.
Por último, se procedió a evaluar posibles soluciones como por ejemplo la construcción de obras de arte ya sea muros de concreto o de gaviones. De esta manera se pretende mitigar los daños producidos por el incremento de agua que se dan en las quebradas, originando pérdidas humanas o materiales.
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Lu, Xiao Feng. "Simulation of the upper Waimakariri River catchment by observed rain & radar reflectivity." Lincoln University, 2009. http://hdl.handle.net/10182/1161.
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ModClark and Clark’s Unit Hydrograph (Clark’s UH) within HEC-HMS software are distributed and lumped models, respectively. Clark’s UH simulates the transformation and attenuation of excess precipitation, and requires time of concentration (Tc) and Storage Coefficient (R) parameters. ModClark transformation accounts for variations in travel time to catchment outlet from all regions of a catchment, and it additionally requires gridded representation of a catchment and Gridded cell-based input files. Four cases (three from observed rain, and one from radar reflectivity) of three chosen events were specifically chosen and examined for the comparison of simulation results with the same estimated initial parameters apart from different rainfall inputs. The Upper Waimakariri River Catchment was divided into ten subcatchments, and the HEC-HMS basin model parameters were estimated by using the physical/hydrological characteristics. However, ModClark transformation was unavailable because of an output error from converting ASCII to gridded Soil Conservation Service Curve Number (SCS CN) format by the conversion tool – ai2dssgrid.exe. Therefore, Mean Aerial Precipitation (MAP) for each subcatchment was calculated by Thiessen polygon method combined with an overlay analysis for grid-cell-based rainfall estimation from radar with geographic information system (GIS) tools. The automated calibration/optimisation procedure included in HEC-HMS package was applied to the cases which showed a deviation between simulation and observed flows. The purpose is to ‘optimise’ the initial estimates of parameters only in a mathematical-fit manner based on the observed flows from the only discharge gauge at Old Highway Bridge (OHB). The TC values calculated from the five equations vary in a relatively narrow range apart from the one from Bransby-Williams equation. Therefore, the values from all the other four equations were averaged and used as the initial TC input. The simulation results showed that there was a notable difference between observed and simulated hydrographs for some case studies even though TC, R, CN, and lag time were calibrated/optimised separately. Also, radar estimated rainfall and grid-based data storage system (DSS) need more investigations.
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Tancreto, Amanda E. "Comparison of Hydrologic Model Performance Statistics Using Thiessen Polygon Rain Gauge and NEXRAD Precipitation Input Methods at Different Watershed Spatial Scales and Rainfall Return Frequencies." UNF Digital Commons, 2015. http://digitalcommons.unf.edu/etd/584.
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As hydrological computer modeling software continues to increase in complexity, the need for further understanding of the value of different model input datasets becomes apparent. Frequently used precipitation model input include rain gauge data and next-generation radar–based (NEXRAD) rainfall data. Rain gauge data are usually interpolated across a model domain using various methods including the Thiessen Polygon methodology, which may be data-sparse in some areas and overly data-dense in others. However, rain gauge data are generally very easy to use in hydrologic model development, often requiring little to no data processing. NEXRAD data have the potential to improve hydrologic runoff estimates due to the increased spatial resolution of the data: but has its own issues regarding accuracy, false precipitation indications, and difficulties due to data processing. Previous studies have investigated the value of NEXRAD input versus traditional rain gauge data inputs for hydrologic studies; however, results are inconclusive as to which precipitation source provides more accurate results. Limited work has been done to compare the value of these datasets at multiple spatial scales, especially in Florida, a study area dominated by low topographic drive and sub-tropical weather. In addition, little to no research has been done regarding the value of NEXRAD versus rain gauge data inputs at different rainfall return frequencies. The proposed research will utilize a hydrological rain-runoff model (HEC-HMS) of the Upper St. Johns River Basin, Florida to compare the performance of the two precipitation data input types at various watershed spatial scales and rainfall return frequencies. Statistical analysis of the hydrological model “goodness-of-fit” results will be utilized to assess the watershed scaling and rainfall frequency requirements to xii which NEXRAD data provide little to no advantage over standard rain gauges using the Thiessen Polygon method for estimating rainfall totals across a model domain.
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Mounir, Adil. "Development of a Reservoir System Operation Model for Water Sustainability in the Yaqui River Basin." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1513880139368117.
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CHENG, KAI-YUAN, and 鄭凱員. "An Application of HEC-HMS and HEC-RAS on Hydraulic Analysis─A Case Study of Jhihben River." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8u2n7q.
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碩士正修科技大學
營建工程研究所
103
The Industrialization makes the extreme weather and green house effect seriously day by day. High frequently violently storms in fewer days is characteristic of extreme weather. How to quickly and effectively model and analyze for hydrologic and river becomes a more needing in water conservancy and disaster prevention in such condition. HEC-HMA and HEC-RAS, the software developed by the U.S. Army Corps of Engineers (USACE) Hydrologic Engineering Center (CEIWR-HEC), were used by a lot people by the freeware characteristic. In this article, we model the hydrologic system by the precipitation data of the year 2008 at TienNiao rainfall station, and calibrate the parameters by the run-off data of the year 2008 at JhihBen flow station. And simulate the run-off data of the year 2009 by the black box analysis of the model through the precipitation data of the year 2009 at TienNiao rainfall station. Then use the estimated data combine to HEC-RAS as the unsteady flow input to analyze the JihBen river condition. Which based on LerLin-bridge, WernChueng-bridge, SinJihBen-bridge, JeoJihBen-bridge, TieLu-bridge and Meher estuary these cross sections and other geographic data. Detailed process description takes considerable proportion in this article just wish it can having some help or reference to someone who are needing in river analyze and hydrologic model. Wishing it also assist to water conservancy and disaster prevention.
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Ou, Hsin-Hung, and 歐信宏. "A Study on the Application of HEC-HMS Rainfall-Runoff Model." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/75487511995228155658.
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碩士國立成功大學
水利及海洋工程學系
89
A catchment is usually delineated as many subbasins by using Geographical Information System (GIS) before HEC-HMS is applied. The problem how many subbasins should be delineated is always faced for users. If the size of subbasin is too large, the spatial herterogeneity can not be considered. On the contrary, it is more difficult to process the spatial data for too many subbasins. The objective of the study is to apply cluster analysis for catchment delineation, and investigate whether SCS curve number (SCS CN) method is appropriate for estimation of direct runoff in Taiwan. The Zhuo-Kou river, a tributary of Kaoping Creek, is chosen for case study. In the cluster analysis, value of curve number, surface slope and the specified rain gauges weighting for each subbasin are used as clustering variables. It is found that a catchment can be efficiently delineated by using cluster analysis if the network of river system is further taken into account. “Median curve number” from eight storm events is defined to estimate the direct runoff. The analysis results conclude that the CN values from tables derived by SCS are suitable for the study area, but the total 2-day antecedent rainfall depth may be more appropriate to determine antecedent moisture condition.
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Kmeť, Milan. "Studie srážko-odtokových poměrů pro územní plán obce Václavov." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-151329.
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Quinonez, Carlo G. "Development of HEC-HMS and HEC-RAS models for urban floodplain mapping and flood damage reduction in Brownsville, Texas." Thesis, 2005. http://hdl.handle.net/1911/17818.
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The primary objective of this project was to develop hydrologic and hydraulic models for the floodplain analysis for Brownsville, Texas and analyze mitigation alternatives within a Geographic Information Systems (GIS) and digital data framework. This framework allowed for flexible manipulation of data and easy interpretation of the results. A methodology was developed that would make improvements to the more standard floodplain analysis approach with respect to both cost-effectiveness and accuracy. The project relied extensively on readily available digital data with a minimum, but sufficient, incorporation of field data for model verification purposes. Examples of this type of data included a LIDAR digital elevation model, global positioning system data, aerial photographs, and land use and land cover data. Another project objective included the collection and organization of various hydrologic and hydraulic data sources within an ArcView GIS system. The consolidation of this data will allow for rapid and efficient model updates as required in the future, and for the analysis of various alternatives for future flood control.
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ThanhTan, Doan, and 段青新. "Application of HEC-HMS, HEC-RAS and ArcGIS to simulate flow discharge in the Linbian River during Typhoon Morakot." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/15655655706822786394.
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Chen, Jun An, and 陳俊安. "A Study of the Characteristics of Parameters in Hydrological Model Applied on HEC-HMS." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/63838382941302879051.
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碩士國立屏東科技大學
土木工程系碩士班
93
The study worked on the hydrologic model system, HEC-HMS, which developed by U.S. Corps of Engineering Center, to simulate rainfall-runoff process of Kao-Ping river watershed. Study the area to divide into six major basins, Lao-Nong river up and down basins、Qi-Shan river up and down basins、Ai-Liao river basin、Zhou-Kou river basin. Use hydrologic mode parameter as the parameter of depending on, rainfall characteristic factor and gentle factor of ground are regarded as the independent variable and to establish the relationship between model parameters and rainfall characteristic and geological factors. According to the discharge hydrograph of 8 selected rainfall events, the hydrologic parameter characteristics of the basin can be choose by the try and error process. The results show that CN value has correlated to Hydro-Geo factors and has the positive correlation with peak flow, basin average slope. The time of concentration has correlated 11 Hydro-Geo factors and has the positive correlation with peak flow, 41~60% rainfall. The storage coefficient has correlated to Hydro-Geo factors mainly are average basin slope, peak flow, total rainfall, basin wide length ration, etc. The initial flow has correlated to Hydro-Geo factors include basin area, peak rainfall, total rainfall duration, etc. The recession constant has correlated to Hydro-Geo factors and positive correlation with peak flow, total runoff. The threshold flow has correlated to Hydro-Geo factors include peak flow, 0~20% rainfall, 81~100% rainfall.
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張凱雯. "Application of HEC-HMS on Drainage Impact Assessment：A case study on the Dali River Basin." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/vx3gzs.
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碩士逢甲大學
水利工程與資源保育學系
102
Rapid urbanization leads to increased impervious areas for catchment surface. Hence the increased flood frequencies and comparatively higher flood peaks are apparent urban catchments when compared to rural catchments. This research selected the Dali River Basin as the study area, and the lands use informations at 2006 were adopted in simulation. The Taichung’s urban development plans were adopted to make the drainage impact assessment using HEC-HMS model. About 15cms in the peak flow increase and above 300cms in total runoff increase were obtained. This research further selected the public zones from lands use maps at 2006 for flood mitigation sites, as the infiltration zones, rainwater collection systems, and detention basins. The effect of flood mitigation is the best for the detention basins. Besides, the operation of detention basins were not adopted in simulation, then the increased peak flows were shown for the high return periods. It can be known the operation plan of detention basins is important besides flood quantity computation.