Journal articles: 'Reservoir management'

1

Wilopo, Wahyu, Hendy Setiawan, and Doni Prakasa Eka Putra. "Evaluation of Artificial Reservoir Management in Sleman Regency, Yogyakarta Special Region." Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan 17, no. 3 (October 14, 2020): 205–14. http://dx.doi.org/10.14710/presipitasi.v17i3.205-214.

Full text

Abstract:

The Indonesian government has promoted reservoir (embung) development programs throughout Indonesia. This program is primarily designed at supporting agricultural irrigation, especially in the dry season. However, in its implementation, there are often many obstacles both in technical and management, causing the main purpose of the reservoir construction cannot be achieved optimally. Therefore, this study aims to evaluate the condition of the reservoir located in Sleman Regency, Yogyakarta Special Region, in terms of physical, institutional, and management constraints. The study was conducted through a direct survey of 9 reservoirs and interviews with managers and residents around the reservoir. The results showed that two reservoirs have small damage in the reservoir building, three reservoirs do not yet have managers, and three reservoirs have not functioned following the purpose of reservoirs development. The obstacle often found in managing reservoirs is the unclear structure for the management of the reservoir, and the existing management is not effectively working. Therefore, the regulation of using reservoir water is not available. It is necessary to have a management organization involving the community and village government where the reservoir is located and also community beneficiaries of agricultural irrigation to guarantee its function and sustainability.

APA, Harvard, Vancouver, ISO, and other styles

2

Utomo, Puji. "Mrica Reservoir Sedimentation: Current Situation and Future Necessary Management." Journal of the Civil Engineering Forum 3, no. 2 (September 12, 2017): 365. http://dx.doi.org/10.22146/jcef.26640.

Full text

Abstract:

Mrica Reservoir is one of many reservoirs located in Central Java that experienced a considerably high sedimentation during the last ten years. This condition has caused a rapid decrease in reservoir capacity. Various countermeasures have been introduced to reduce the rate of the reservoir sedimentation through catchment management and reservoir operation by means of flushing and/or dredging. However, the sedimentation remains intensive so that the fulfillment of water demand for electrical power generation was seriously affected. This paper presents the results of evaluation on the dynamics of the purpose of this research is to evaluate the sediment balance of the Mrica Reservoir based on two different scenarios, i.e. the existing condition and another certain type of reservoir management. The study on sediment balance was carried out by estimating the sediment inflow applying sheet erosion method in combination with the analysis of sediment rating curve. The measurement of the deposited sediment rate in the reservoir was conducted through the periodic echo sounding, whereas identification of the number of sediment that has been released from the reservoir was carried out through the observation on both flushing and dredging activities. The results show that during the last decade, the rate of the sediment inflow was approximately 5.869 MCM/year, whereas the released sediment from the reservoir was 4.097 MCM/year. In order to maintain the reservoir capacity, therefore, at least 1.772 MCM/year should be released from the reservoir by means of either flushing or dredging. Sedimentation management may prolong the reservoir’s service life to exceed the design life. Without sediment management, the lifetime of the reservoir would have finished by 2016, whereas with the proper management the lifetime may be extended to 2025.

APA, Harvard, Vancouver, ISO, and other styles

3

Kaliszewski, A. B. "RESERVOIR SIMULATION FOR RESERVOIR MANAGEMENT." APPEA Journal 26, no. 1 (1986): 397. http://dx.doi.org/10.1071/aj85034.

Full text

Abstract:

The Hutton reservoir in the Merrimelia Field (Cooper-Eromanga Basin) was the subject of a 3-D reservoir simulation study. The primary objective of the study was to develop a reservoir management tool for evaluating the performance of the field under various depletion options.The study confirmed that the ultimate oil recovery from this strong water drive reservoir was not adversely affected by increasing total fluid offtake rate. However, any decisions regarding changes to the depletion scheme such as increasing production rates, if based solely on computer simulation results, should be viewed with caution. Careful monitoring of any changes to the depletion philosophy and checking of actual data against simulation predictions are essential to ensure that oil production rate and ultimate recovery are optimised.The model assisted in evaluating the economics of development drilling. While the simulation results are dependent on the validity of geological mapping, the model was useful in confirming that, due to very high transmissibility in the Hutton reservoir, additional wells would only accelerate production rather than increase ultimate recovery. The issue of drilling wells thus became one of balancing the benefits of accelerating production against the geological risk associated with that well.Interaction between the reservoir engineer and various disciplines, particularly development geology, is critical in the development and application of a good working simulation model. This was found to be especially important during the history matching phase in the study. If engineers and development geologists can learn more of the others' discipline and appreciate the role that each has to play in simulation studies, the validity of such models can only be improved.The paper addresses a number of the pitfalls commonly encountered in application of reservoir simulation results.

APA, Harvard, Vancouver, ISO, and other styles

4

Meadows, Michael D. "Reservoir Management." Journal - American Water Works Association 79, no. 8 (August 1987): 26–31. http://dx.doi.org/10.1002/j.1551-8833.1987.tb02889.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Yu, Da-jin, Zhengwei Zou, and Jin Li. "Evaluation of reservoir management modernization under the concept of coordinated development." Water Supply 20, no. 8 (August 3, 2020): 3697–706. http://dx.doi.org/10.2166/ws.2020.175.

Full text

Abstract:

Abstract The modernization of reservoir management is of great significance to the coordinated development of the region. There are many factors affecting the modernization of reservoir management, and there is a certain degree of ambiguity, randomness and uncertainty among the factors. It is difficult to evaluate the modernization of reservoir management comprehensively by traditional methods. This study first studies the connotation of reservoir management modernization under the concept of coordinated development; that is, securitization, economization, scientificalization and greenization. On this basis, a modernization evaluation system and AHP-Fuzzy evaluation model for reservoir management are constructed. Then, an empirical study is conducted with six large reservoirs in Jiangxi Province of China. The results show that the modernization level of large-scale reservoir management in Jiangxi Province is generally above the middle level, and the economic management and engineering management level of some reservoirs is relatively low, resulting in a low scientific and economic level of reservoir management, which is a key factor restricting the process of reservoir management modernization.

APA, Harvard, Vancouver, ISO, and other styles

6

Magner, T. N. "ECONOMIC BENEFITS OF THE KUTUBU RESERVOIR MANAGEMENT STRATEGY." APPEA Journal 35, no. 1 (1995): 121. http://dx.doi.org/10.1071/aj94008.

Full text

Abstract:

In spite of all the of the studies and analyses conducted since the initial oil discovery in 1986, considerable uncertainty existed over the expected performance of the Kutubu reservoirs prior to initial production. Extensive use of reservoir simulation during the field development helped overcome technical challenges in the development phase. Continued modelling work has increased understanding of reservoir behaviour, identified additional development opportunities and further enhanced field economics.Since First Oil in June 1992, over 100 MMSTB of light, sweet Kutubu crude oil have been produced and exported {through October 1994). At present, the field produces approximately 120,000 STBO/D from 27 vertical wells and two horizontal wells. Reservoir pressure maintenance is provided by gravity-stable re-injection of produced gas into five wells.On the whole, the reservoirs have met or exceeded expectations to date. This is in part due to the effective planning and implementation of a strategy to manage the Kutubu reservoirs. This reservoir management strategy combines an aggressive program of reservoir surveillance, data collection, computer simulation and continuous reassessment of previous assumptions.

APA, Harvard, Vancouver, ISO, and other styles

7

Daus, Milan, Katharina Koberger, Kaan Koca, Felix Beckers, Jorge Encinas Fernández, Barbara Weisbrod, Daniel Dietrich, et al. "Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management." Sustainability 13, no. 8 (April 18, 2021): 4498. http://dx.doi.org/10.3390/su13084498.

Full text

Abstract:

Reservoirs are a common way to store and retain water serving for a multitude of purposes like storage of drinking and irrigation water, recreation, flood protection, navigation, and hydropower production, and have been built since centuries. Today, few reservoirs serve only one purpose, which requires management of present demands and interests. Since each reservoir project will cause negative impacts alongside desired advantages both on a local, regional and global scale, it is even more urgent to develop a common management framework in an attempt to mitigate negative impacts, incorporate different demands and make them visible within the discourse in order to avoid conflicts from early on. The scientific publications on reservoirs are manifold, yet a comprehensive and integrative holistic tool about management of this infrastructure is not available. Therefore, a comprehensive and integrated conceptual tool was developed and proposed by the authors of this paper that can contribute to the sustainable management of existing reservoirs. The tool presented herein is based on the results from the interdisciplinary CHARM (CHAllenges of Reservoir Management) project as well as the condensed outcome of relevant literature to aid and enhance knowledge of reservoir management. The incorporated results are based on field, laboratory and empirical social research. The project CHARM focused on five different aspects related to existing reservoirs in southern Germany (Schwarzenbachtalsperre, Franconian Lake District), namely: sedimentation of reservoirs, biostabilisation of fine sediments, toxic cyanobacteria(l) (blooms), greenhouse gas emissions from reservoirs and social contestation, respectively consent. These five research foci contributed to the topics and setup of a conceptual tool, put together by the research consortium via delphi questioning, which can be found alongside this publication to provide insights for experts and laymen. Conceptualising and analysing the management in combination with quantitative and qualitative data in one descriptive tool presents a novelty for the case studies and area of research. The distribution within the scientific community and interested public will possibly make a positive contribution to the goal of sustainable water resources management in the future.

APA, Harvard, Vancouver, ISO, and other styles

8

Jin, Jiaxu, Hongyue Zhang, Liang Xu, Kelin Zhou, and Xiangfeng Lv. "Stability Analysis of Downstream Dam Expansion Tailings Pond." Advances in Civil Engineering 2022 (June 2, 2022): 1–13. http://dx.doi.org/10.1155/2022/1809736.

Full text

Abstract:

The buildup of tailings in China has expanded dramatically with economic development and industrial demand, and the safety of tailings reservoirs has become increasingly serious. Due to the difficulty in finding a new reservoir site, the expansion approach of building a new tailings dam downstream of the original reservoir area was investigated. The stability of the tailings reservoir after expansion was calculated using the traditional dynamic and static stability solution method and taking into account the unpredictability of dam construction materials and tailings material parameters in the reservoir area. The results reveal that throughout the tailings accumulation process in the new reservoir, the tailings will build a back pressure slope at the original reservoir’s initial dam, which can considerably improve the original reservoir’s dynamic and static stability. The Monte Carlo method clearly outperforms older methods for tailing pond stability analysis. The results of this paper’s calculations will give a theoretical foundation and practical reference for the later management and maintenance of such tailings reservoirs, as well as fresh ideas and insights for comparable projects due to limited site selection.

APA, Harvard, Vancouver, ISO, and other styles

9

Hwang, Soonho, Sang-Min Jun, Jung-Hun Song, Kyeung Kim, Hakkwan Kim, and Moon-Seong Kang. "Application of the SWAT-EFDC Linkage Model for Assessing Water Quality Management in an Estuarine Reservoir Separated by Levees." Applied Sciences 11, no. 9 (April 26, 2021): 3911. http://dx.doi.org/10.3390/app11093911.

Full text

Abstract:

Estuarine reservoirs are available for use in various water resource systems. In agriculture, supplying irrigation water that meets water quality standards is essential for food safety. This study focused on the Ganwol estuarine reservoir in the midwestern region of South Korea, which suffers from water quality deterioration problems. To explore the water quality improvement in an estuarine reservoir, it is essential to understand the characteristics of water quality changes in the reservoir following water pollution control management. Therefore, the purpose of this study is to evaluate the effects of water quality management on the estuarine reservoir, which is separated by levees, using the soil and water assessment tool (SWAT)-environmental fluid dynamics code (EFDC) linkage model. In this study, soil remediation by dredging the reservoir’s bottom soil and effluent control from public sewage treatment works were considered as the water management plans. The results of this study indicate that reducing the internal load of the reservoir increases internal resilience and reducing the external inflow load decreases the impact on the system. Hence, comprehensive measures are effective in improving water quality.

APA, Harvard, Vancouver, ISO, and other styles

10

Larraz, Beatriz, and Enrique San-Martin. "A Tale of Two Dams: The Impact of Reservoir Management on Rural Depopulation in Central Spain." Water Resources Management 35, no. 14 (October 12, 2021): 4769–87. http://dx.doi.org/10.1007/s11269-021-02938-9.

Full text

Abstract:

AbstractIn rural areas, depopulation is mainly due to a lack of economic and employment opportunities. In this context, the reservoirs already built can be a source of socioeconomic development based on tourism and outdoor leisure activities. The condition for this development to materialize is that reservoir management considers these activities. In Central Spain, a process of rural depopulation has been generated in the municipalities around the reservoirs at the Upper Tagus River, as water management allows water transfers from the Tagus to the Segura River without taking into account regulations that prioritize and protect donor basin users. Through the comparison of reservoir water management and demographic data of two rural areas close to the reservoirs, this article reveals the direct relationship between reservoir management that enables recreational uses with its consequent socioeconomic development and the maintenance of the population in the territory. Consequently, reservoir water management based on the socioeconomic development of reservoir banks is necessary and a priority over transfers to another basin.

APA, Harvard, Vancouver, ISO, and other styles

11

Cheong, T. S., I. Ko, and J. W. Labadie. "Development of multi-objective reservoir operation rules for integrated water resources management." Journal of Hydroinformatics 12, no. 2 (November 14, 2009): 185–200. http://dx.doi.org/10.2166/hydro.2009.054.

Full text

Abstract:

Real-time monitoring, databases, optimization models and visualization tools have been integrated into a Decision Support System (DSS) for optimal water resources management of two water supply reservoirs, the Daechung Reservoir and the Yongdam Reservoir of the Geum River basin, Daejeon, Korea. The KModSim as a DSS has been designed to provide information on current reservoir conditions to operational staff and to help in making decisions for short- and long-term management. For the physical calibration, the network simulations in seasonal water allocation of both reservoirs are performed for 23 years from January 1 1983 to June 30 2006. Linear and nonlinear operating rules are developed by using the actual reservoir operation data obtained from both reservoirs which are then used in KModSim by the hydrologic state method to estimate optimized target storages of both reservoirs. For validation of hydrologic states in KModSim and scenario testing for the management simulations, the optimal network simulation for the seasonal water allocations from October 1 2002 to June 30 2006 were also performed. The results' simulation by new rules fit the measured actual reservoir storage and represent well the various outflow discharge curves measured at the gauging stations of Geum River. The developed operating rules are proven to be superior in explaining actual reservoir operation as compared to the simulated target storages by existing optimization models.

APA, Harvard, Vancouver, ISO, and other styles

12

Setiawan, Ery, Syamsul Hidayat, Ida Bagus Giri Putra, Muhammad Bagus Budianto, and Salehudin. "Evaluation of sediment management for two large reservoirs in Lombok island." MATEC Web of Conferences 195 (2018): 05002. http://dx.doi.org/10.1051/matecconf/201819505002.

Full text

Abstract:

Sedimentation is an important issue in reservoir rehabilitation and maintenance. This problem is worsened by seasonal water scarcity as a characteristic of arid catchments. Worldwide loss of storage capacity due to sedimentation is much higher than the increase of capacity by the construction of new reservoirs. Further, sedimentation hinders the safe operation of not only shallow reservoirs but also deep reservoirs by means of turbidity currents which sporadically transport large volumes of sediments down to the dams. This study analyses the real case of Pengga reservoir and Batujai reservoir located in Central Indonesia. Selected sediment management alternatives were analysed and evaluated based on technical, social and environmental criteria. Evaluation of sediment management alternatives was conducted by utilising the REServoir CONservation (RESCON) tool. Results showed that, first, both flushing techniques and hydrosuction are feasible whereas dredging and trucking are not. Secondly, the flushing technique outweighs the Hydrosuction Sediment Removal (HSRS) method. Thirdly, application of the HSRS method in both reservoirs shares one thing in common, i.e. it requires an appropriate combination of the number of suction pipes as well as minimum suction pipe diameters. Lastly, there are some differences in the details of implementation of the flushing technique to both reservoirs.

APA, Harvard, Vancouver, ISO, and other styles

13

Trice, M. L., and B. A. Dawe. "Reservoir Management Practices." Journal of Petroleum Technology 44, no. 12 (December 1, 1992): 1344–49. http://dx.doi.org/10.2118/22236-pa.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Satter, A., J. E. Varnon, and M. T. Hoang. "Integrated Reservoir Management." Journal of Petroleum Technology 46, no. 12 (December 1, 1994): 1057–64. http://dx.doi.org/10.2118/22350-pa.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Baljyan, Pargev, Arestak Sarukhanyan, and Eleonora Avanesyan. "Study of sediment deposition processes and assessment of the change in the W-H characteristics of the madaghis reservoir." EUREKA: Physics and Engineering, no. 1 (January 19, 2023): 3–12. http://dx.doi.org/10.21303/2461-4262.2023.002757.

Full text

Abstract:

The accumulation of sediments in reservoir is always a problem. Over time, these accumulations occupy the volume meant for water management, dramatically reducing the reservoir's effectiveness. The environment of the river basin below the reservoir undergoes significant changes. In this regard, assessing changes in volumetric W-H characteristics, particularly in reservoirs built on high turbidity rivers, is critical. The Mataghis Reservoir on Tartar River was chosen as the object of study. The quantity of accumulated sediments was established by original measurements and was calculated in three hydrologic ways at distinct stages of operation. The actual graphs showing the reservoir's W-H volumetric characteristics were made two decades after commissioning and are still in use. According to the findings, over 70 per cent of the reservoir volume has been filled with sediments over the course of the reservoir's thirty-year operation. A theoretical model of the sediment buildup process in basins has been created. Separate parameters have been created for the deposition of bottom sediments entering the reservoir and suspended particles in the flow. Based on them, the patterns of distribution of accumulated sediments according to the length and height of the reservoir were drawn out. The vertical pulsation velocity and the results of studies for determining the minimum rate of soil particle flow were used. To solve sedimentation problems in operating and newly constructed reservoirs, a methodology for evaluating changes in the amount of collected water and changes in the volume of water control, as well as a theoretical method for projecting their future behavior, can be applied

APA, Harvard, Vancouver, ISO, and other styles

16

Nystad, Arild N. "PETROLEUM RESERVOIR MANAGEMENT: A RESERVOIR ECONOMIC APPROACH." Natural Resource Modeling 2, no. 3 (December 1988): 345–82. http://dx.doi.org/10.1111/j.1939-7445.1988.tb00064.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Zhou, Tian, Bart Nijssen, Huilin Gao, and Dennis P. Lettenmaier. "The Contribution of Reservoirs to Global Land Surface Water Storage Variations*." Journal of Hydrometeorology 17, no. 1 (December 21, 2015): 309–25. http://dx.doi.org/10.1175/jhm-d-15-0002.1.

Full text

Abstract:

Abstract Man-made reservoirs play a key role in the terrestrial water system. They alter water fluxes at the land surface and impact surface water storage through water management regulations for diverse purposes such as irrigation, municipal water supply, hydropower generation, and flood control. Although most developed countries have established sophisticated observing systems for many variables in the land surface water cycle, long-term and consistent records of reservoir storage are much more limited and not always shared. Furthermore, most land surface hydrological models do not represent the effects of water management activities. Here, the contribution of reservoirs to seasonal water storage variations is investigated using a large-scale water management model to simulate the effects of reservoir management at basin and continental scales. The model was run from 1948 to 2010 at a spatial resolution of 0.25° latitude–longitude. A total of 166 of the largest reservoirs in the world with a total capacity of about 3900 km3 (nearly 60% of the globally integrated reservoir capacity) were simulated. The global reservoir storage time series reflects the massive expansion of global reservoir capacity; over 30 000 reservoirs have been constructed during the past half century, with a mean absolute interannual storage variation of 89 km3. The results indicate that the average reservoir-induced seasonal storage variation is nearly 700 km3 or about 10% of the global reservoir storage. For some river basins, such as the Yellow River, seasonal reservoir storage variations can be as large as 72% of combined snow water equivalent and soil moisture storage.

APA, Harvard, Vancouver, ISO, and other styles

18

De Vincenzo, Annamaria, Carmine Covelli, Antonio Molino, Marilena Pannone, Margherita Ciccaglione, and Bruno Molino. "Long-Term Management Policies of Reservoirs: Possible Re-Use of Dredged Sediments for Coastal Nourishment." Water 11, no. 1 (December 21, 2018): 15. http://dx.doi.org/10.3390/w11010015.

Full text

Abstract:

This paper proposes a methodological approach to the re-use of reservoir sediments for coastal nourishment. The proposed approach represents a point of convergence between water and sediment management, coastal protection from erosion and the re-use of sediments dredged from reservoirs. In particular, this study indicates a general protocol of actions and a reference legislative scenario for the use of sediment from reservoirs for beach nourishment as an alternative to sediment from sea caves or land caves. Quantitative characterization of reservoir sediments and their qualitative characterization are the fundamental steps to define the compatibility between reservoir sediment and beach sand. The study was applied to a real case of Southern Italy known as the Guardialfiera Reservoir.

APA, Harvard, Vancouver, ISO, and other styles

19

Solander, Kurt C., John T. Reager, Brian F. Thomas, Cédric H. David, and James S. Famiglietti. "Simulating Human Water Regulation: The Development of an Optimal Complexity, Climate-Adaptive Reservoir Management Model for an LSM." Journal of Hydrometeorology 17, no. 3 (February 12, 2016): 725–44. http://dx.doi.org/10.1175/jhm-d-15-0056.1.

Full text

Abstract:

Abstract The widespread influence of reservoirs on global rivers makes representations of reservoir outflow and storage essential components of large-scale hydrology and climate simulations across the land surface and atmosphere. Yet, reservoirs have yet to be commonly integrated into earth system models. This deficiency influences model processes such as evaporation and runoff, which are critical for accurate simulations of the coupled climate system. This study describes the development of a generalized reservoir model capable of reproducing realistic reservoir behavior for future integration in a global land surface model (LSM). Equations of increasing complexity relating reservoir inflow, outflow, and storage were tested for 14 California reservoirs that span a range of spatial and climate regimes. Temperature was employed in model equations to modulate seasonal changes in reservoir management behavior and to allow for the evolution of management seasonality as future climate varies. Optimized parameter values for the best-performing model were generalized based on the ratio of winter inflow to storage capacity so a future LSM user can generate reservoirs in any grid location by specifying the given storage capacity. Model performance statistics show good agreement between observed and simulated reservoir storage and outflow for both calibration (mean normalized RMSE = 0.48; mean coefficient of determination = 0.53) and validation reservoirs (mean normalized RMSE = 0.15; mean coefficient of determination = 0.67). The low complexity of model equations that include climate-adaptive operation features combined with robust model performance show promise for simulations of reservoir impacts on hydrology and climate within an LSM.

APA, Harvard, Vancouver, ISO, and other styles

20

Dewantara, Ezra Fajar, Yanuar Jarwadi Purwanto, and Yudi Setiawan. "MANAGEMENT STRATEGY OF WATER HYACINTH (EICHORNIACRASSIPES) INJATILUHUR RESERVOIR, WEST JAVA." Jurnal Penelitian Sosial dan Ekonomi Kehutanan 18, no. 1 (April 30, 2021): 63–74. http://dx.doi.org/10.20886/jpsek.2021.18.1.63-74.

Full text

Abstract:

Indonesia has quite extensive multi-purpose reservoir waters, one of which was built for the first time is the Ir. H. Djuanda reservoir or better known as Jatiluhur reservoir. The activities carried out in the Jatiluhur reservoir are varied, such as fisheries, transportation,water sources as well as power generation as secondary functions of the reservoir. If managed properly, the reservoir will give a real contribution to the economy and welfare of the community without disrupting the sustainability of the ecosystems and its functions. In Indonesia, problems that often occur in all aquatic ecosystems are eutrophication (nutrient enrichment), sedimentation, and pollution. Water hyacinth (Eichorniacrassipes) is a type of aquatic plant that is generally considered as a weed. The study aims to formulate a water hyacinth management strategyusing the SWOT method with ten respondents.The selection of respondents using purposive sampling method.The results showed that all stakeholders, government, and communities must work together in utilizing and managing reservoirs and watersheds that enter the reservoir waters so that the quality status of reservoir becomes better and the growth of water hyacinth does not increase rapidly. Water hyacinth can also be used as fertilizer or crafts and not just a weed.

APA, Harvard, Vancouver, ISO, and other styles

21

O'Dell, Mike, and Edwin Lamers. "Subsurface Uncertainty Management and Development Optimization in the Harweel Cluster, South Oman." SPE Reservoir Evaluation & Engineering 8, no. 02 (April 1, 2005): 164–68. http://dx.doi.org/10.2118/89110-pa.

Full text

Abstract:

Summary In the past 5 years, there has been a string of exploration successes in discovering some 350 million m3 (2 billion bbl) of oil in the Harweel Clusterin south Oman. This oil is deep, under high pressure, and comes with a high gas/oil ratio (GOR), and the fluids contain 15% CO2 and 5% H2S. Of the nine Precambrian carbonate reservoirs, six are lithostatically pressured, and three are hydrostatic. The Harweel Cluster is more than 70 km from existing infrastructure. If gas can be reinjected, miscible displacement is expected in many of the reservoirs. The Harweel Cluster is one of Oman's major opportunities for "green field" oil development. There is a large degree of subsurface uncertainty in gross rock volume and oil/water contact (OWC), reservoir architecture, faults and fractures and reservoir compartmentalization, degree of dolomitization, permeability level and heterogeneity, fluid properties, and so on. However, little is known about the scale and relative importance of each of these uncertainties. Some uncertainties, such as compositional grading, might turn out to be more important than anticipated when evaluating development options because of nonlinearities and dependencies. Analyzing the effects of all uncertainty combinations in all reservoirs is not a realistic option. Therefore, a structured scenario-based approach has been developed to analyze and assess all potential factors influencing recovery schemes, reserves, and productivity. After evaluating the range of possible values and calculating the impact of each uncertainty, realizations were created to represent the range of possible values in each new reservoir. Field-scale equation-of-state models were used to simulate both primary depletion and gas reinjection. Development scenarios were optimized for each discrete realization. The resulting reservoir models serve as a basis for the development-concept selection and the subsequent field-development plans. Introduction The Harweel Cluster consists of nine reservoirs found in two formations in seven distinct fields. The fields were discovered between 1997 and 2002, and there is an ongoing exploration program in the area. The fields are Dafaq, Ghafeer, Harweel Deep, Rabab, Sakhiya, Sarmad, and Zalzala. The formations areA2C and A3C; these names are abbreviations for Ara Formation cycle 2 and 3Carbonates. All the reservoirs are intra salt carbonate reservoirs. Only Ghafeer and Sakhiya have reservoirs in both formations. These reservoirs are collectively called the Harweel Cluster because they form a cluster of reservoirs, and Harweel Deep was the first reservoir to be discovered. The reservoirs generally have low permeability (1 to 10 md), and they contain a wide range of fluid properties from retrograde gas condensate to black oil with moderate GOR (185 m3/m3). The highest level of the development concept is that they will be developed with a shared central facility. This cost-saving measure has been decided, but more detailed aspects of the development concept are still open for rigorous study, appraisal, and testing. Rigorous study began in2001 after discovery and reserve booking exercises for the individual reservoirs. With only the highest level of the development concept fixed, the study team had to develop an uncertainty-management scheme for evaluation of the cluster. Subsurface uncertainties were organized into 24 categories in eight major groups: gross rock volume, saturation, reservoir architecture, faults and fractures, reservoir properties, pressure/volume/temperature (PVT), relative permeability, compaction, and compressibility. Analyzing the effects of all uncertainty combinations in all reservoirs (more than 1 million permutations for each of the nine reservoirs) is not a realistic option. Therefore, a structured approach is required to analyze and assess all potential factors influencing recovery schemes, reserves, and productivity. A consistent process has been set up to (1) build reservoir models, (2) identify the critical uncertainties, (3) cover the full range of potential subsurface realizations, and (4) optimize the development. These reservoir models serve as a basis for the development concept selection and the subsequent field- and asset-development plans. The scenario-modeling process is illustrated schematically in Fig. 1.

APA, Harvard, Vancouver, ISO, and other styles

22

Scharf, Wilfried. "Integrated water quality management of the große dhünn reservoir." Water Science and Technology 37, no. 2 (January 1, 1998): 351–59. http://dx.doi.org/10.2166/wst.1998.0159.

Full text

Abstract:

In this paper I introduce protection measures and management options which are applied to the watershed as well as to the reservoir itself and later their impact on water quality is discussed. Emphasis is given to nutrients from non-point sources and nutrient removal from such sources by pre-reservoirs is considered in detail. Phosphorus removal has to work mainly during flood events, when most of the nutrient load enters the reservoir. As our results reveal, 55% of the total annual TP-input can be removed in pre-reservoirs. I also introduce our concept of fishery management, which involves stocking the reservoir with lake trout (Salmo trutta lacustris) and pike perch (Stizostedion lucioperca). The advantage of having lake internal management options available, i.e. selective take-off from raw waters, is also considered in the case of development of metalimnetic blue-green algal (Planktothrix) populations. Preparatory measures i.e. cleaning of the reservoir basin, which has to be done before the rivers are impounded, are discussed. “Trophic upsurge”, in the sense of nutrient leaching, was not important during the first filling years. Improvements in water quality during the “ageing process” are due to lake internal mechanisms, i.e. the increase of sedimentation capacity and decrease of the ratio of epi- to hypolimnetic water volume, which were supplemented later by sewage diversion. Our results present ample evidence that it is due to our philosophy of integrated water quality management that Große Dhünn Reservoir is oligotrophic today - always able to fulfil its purposes.

APA, Harvard, Vancouver, ISO, and other styles

23

A.Z, Abdul Razad, Abbas N.A, Mohd Sidek. L, Alexander J.L, and Jung K. "Sediment Management Strategies for Hydropower Reservoirs in Active Agricultural Area." International Journal of Engineering & Technology 7, no. 4.35 (November 30, 2018): 228. http://dx.doi.org/10.14419/ijet.v7i4.35.22737.

Full text

Abstract:

Ringlet, Jor and Mahang reservoirs are part of Cameron Highlands – Batang Padang Hydroelectric Scheme. Conversion of forest to agricultural and urban area within the catchment has caused Ringlet Reservoir to suffer severe sedimentation problem and waste dumping. This has caused operational difficulties to the hydropower operator. Based on estimation, sediment inflow into Ringlet Reservoir has increased multiple folds from 25,000 m3/year in 1960s up to between 120,000 m3/year to 200,000 m3/year in 2010. This reduces the total storage capacity of Ringlet Reservoir to almost 50% of its original design value, and subsequently affects Jor and Mahang Reservoirs. Bertam Intake is often choked by the sediment built up within the area, thus limiting the running hours of the plant to generate electricity. Without sediment management strategies, the incoming sediment load into Ringlet Reservoir would increase tremendously and can cause the hydropower scheme to cease operation faster that its design life expectancy. Various mitigation strategies have been implemented such as dredging, construction of check dams and settling basins and flushing from the bottom outlet, resulting to an increase in storage. Despite these efforts which focus within the reservoir, the best solution is by control the sediment and waste at source, through the concept of an integrated catchment management. This requires concerted effort from the local authorities and public to ensure successful implementation. This paper outlines the methods, analyses and results of various mitigation strategies.

APA, Harvard, Vancouver, ISO, and other styles

24

Lawal, Kazeem A., Asekhame U. Yadua, Mathilda I. Ovuru, Oluchukwu M. Okoh, Stella I. Eyitayo, Saka Matemilola, and Olugbenga Olamigoke. "Rapid screening of oil-rim reservoirs for development and management." Journal of Petroleum Exploration and Production Technology 10, no. 3 (December 2, 2019): 1155–68. http://dx.doi.org/10.1007/s13202-019-00810-6.

Full text

Abstract:

AbstractAs an improvement over existing screening techniques, we introduce the relative mobile energy of primary gas-cap to the aquifer (Egw) as a new parameter for characterizing the performance of oil-rim reservoirs. Egw integrates key static and dynamic reservoir properties. To account for the time value of production, the framework allows maximizing the discounted recovery factor (DRF) of oil, gas or total hydrocarbon as the objective function. Employing detailed simulations of different well-defined oil-rim models, DRFs of oil, gas and total hydrocarbons have been correlated against Egw for common development concepts and well types. These correlations have resulted in a new screening technique for both green and brown oil-rim reservoirs. In addition to presenting simple generic charts for quick evaluation of oil-rim reservoirs, the main contributions of this work include the introduction of Egw as a new performance-characterizing parameter, and the flexibility to consider the DRF of any of oil, gas or total hydrocarbon as the basis for screening an oil-rim reservoir for development planning and field management. Using the example of a brown oil-rim reservoir, the applicability and robustness of the new screening technique are demonstrated.

APA, Harvard, Vancouver, ISO, and other styles

25

Emad Hosseini, Seyed, Amir Naser Akhavan, and Mohsen Bahrami. "Designing an Integrated Model of Oil and Gas Management with a SWOT Approach." Tehnički glasnik 14, no. 4 (December 9, 2020): 440–45. http://dx.doi.org/10.31803/tg-20200514234542.

Full text

Abstract:

In the recent years, the growing demand for energy on the one hand and the reduction of conventional hydrocarbon reserves on the other hand have made the proper extraction of oil and gas reserves, i.e. reservoir management issues, more important and hence proper management of these reserves is inevitable. Although renewable energies currently provide the bulk of the world’s energy needs, hydrocarbon fuels remain the main source of energy until 2035.Despite the growing importance of the Integrated Reservoir Management Model (IRMI), as a rational solution to maximize economic production from oil and gas reservoirs, a comprehensive model that can cover all reservoir management modules has not yet been proposed. In this paper, by examining the current condition of reservoir management in one of the subsidiaries of the National Iranian Oil company and analyzing the obtained results, we offer some solutions to improve the condition and finally, we present a comprehensive model for reservoir management in this company.

APA, Harvard, Vancouver, ISO, and other styles

26

Graham, Nicholas E., and Konstantine P. Georgakakos. "Toward Understanding the Value of Climate Information for Multiobjective Reservoir Management under Present and Future Climate and Demand Scenarios." Journal of Applied Meteorology and Climatology 49, no. 4 (April 1, 2010): 557–73. http://dx.doi.org/10.1175/2009jamc2135.1.

Full text

Abstract:

Abstract Numerical simulation techniques and idealized reservoir management models are used to assess the utility of climate information for the effective management of a single multiobjective reservoir. Reservoir management considers meeting release and reservoir volume targets and minimizing wasteful spillage. The influence of reservoir size and inflow variability parameters on the management benefits is examined. The effects of climate and demand (release target) change on the management policies and performance are also quantified for various change scenarios. Inflow forecasts emulate ensembles of dynamical forecasts for a hypothetical climate system with somewhat predictable low-frequency variability. The analysis considers the impacts of forecast skill. The mathematical problem is cast in a dimensionless time and volume framework to allow generalization. The present work complements existing research results for specific applications and expands earlier analytical results for simpler management situations in an effort to draw general conclusions for the present-day reservoir management problem under uncertainty. The findings support the following conclusions: (i) reliable inflow forecasts are beneficial for reservoir management under most situations if adaptive management is employed; (ii) tolerance to forecasts of lower reliability tends to be higher for larger reservoirs; (iii) reliable inflow forecasts are most useful for a midrange of reservoir capacities; (iv) demand changes are more detrimental to reservoir management performance than inflow change effects of similar magnitude; (v) adaptive management is effective for mitigating climatic change effects and may even help to mitigate demand change effects.

APA, Harvard, Vancouver, ISO, and other styles

27

Hou, Jiawei, Albert I. J. M. van Dijk, Hylke E. Beck, Luigi J. Renzullo, and Yoshihide Wada. "Remotely sensed reservoir water storage dynamics (1984–2015) and the influence of climate variability and management at a global scale." Hydrology and Earth System Sciences 26, no. 14 (July 19, 2022): 3785–803. http://dx.doi.org/10.5194/hess-26-3785-2022.

Full text

Abstract:

Abstract. Many thousands of large dam reservoirs have been constructed worldwide during the last 70 years to increase reliable water supplies and support economic growth. Because reservoir storage measurements are generally not publicly available, so far there has been no global assessment of long-term dynamic changes in reservoir water volumes. We overcame this by using optical (Landsat) and altimetry remote sensing to reconstruct monthly water storage for 6695 reservoirs worldwide between 1984 and 2015. We relate reservoir storage to resilience and vulnerability and investigate interactions between precipitation, streamflow, evaporation, and reservoir water storage. This is based on a comprehensive analysis of streamflow from a multi-model ensemble and as observed at ca. 8000 gauging stations, precipitation from a combination of station, satellite and forecast data, and open water evaporation estimates. We find reservoir storage has diminished substantially for 23 % of reservoirs over the three decades, but increased for 21 %. The greatest declines were for dry basins in southeastern Australia (−29 %), southwestern USA (−10 %), and eastern Brazil (−9 %). The greatest gains occurred in the Nile Basin (+67 %), Mediterranean basins (+31 %) and southern Africa (+22 %). Many of the observed reservoir changes could be explained by changes in precipitation and river inflows, emphasizing the importance of multi-decadal precipitation changes for reservoir water storage. Uncertainty in the analysis can come from, among others, the relatively low Landsat imaging frequency for parts of the Earth and the simple geo-statistical bathymetry model used. Our results also show that there is generally little impact from changes in net evaporation on storage trends. Based on the reservoir water balance, we deduce it is unlikely that water release trends dominate global trends in reservoir storage dynamics. This inference is further supported by different spatial patterns in water withdrawal and storage trends globally. A more definitive conclusion about the impact of changes in water releases at the global or local scale would require data that unfortunately are not publicly available for the vast majority of reservoirs globally.

APA, Harvard, Vancouver, ISO, and other styles

28

Bhatti, Zafar I. "Lake and Reservoir Management." Water Environment Research 74, no. 6 (October 1, 2002): 1113–74. http://dx.doi.org/10.2175/106143002x140675.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Bhatti, Zafar I. "Lake and Reservoir Management." Water Environment Research 75, no. 6 (October 1, 2003): 1354–416. http://dx.doi.org/10.2175/106143003x145309.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Bhatti, Zafar. "Lake and Reservoir Management." Water Environment Research 76, no. 6 (September 2004): 2106–54. http://dx.doi.org/10.2175/106143004x145795.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Bhatti, Zafar. "Lake and Reservoir Management." Water Environment Research 77, no. 6 (September 2005): 2383–432. http://dx.doi.org/10.2175/106143005x54597.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Bhatti, Zafar. "Lake and Reservoir Management." Water Environment Research 78, no. 10 (September 2006): 1925–57. http://dx.doi.org/10.2175/106143006x119459.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Gantzer, Paul A., Vickie L. Singleton, and John C. Little. "Lake and Reservoir Management." Water Environment Research 80, no. 10 (October 2008): 1743–90. http://dx.doi.org/10.2175/106143008x328798.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Gantzer, Paul A., Lee D. Bryant, and John C. Little. "Lake and Reservoir Management." Water Environment Research 81, no. 10 (September 10, 2009): 1854–956. http://dx.doi.org/10.2175/106143009x12445568400494.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Acharya, Sunil, Vikram M. Pattarkine, and Christopher F. Knud-Hansen. "Lake and Reservoir Management." Water Environment Research 82, no. 10 (January 1, 2010): 1767–836. http://dx.doi.org/10.2175/106143010x12756668801897.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

McCord, Stephen A. "Lake and reservoir management." Water Environment Research 69, no. 4 (June 1997): 737–49. http://dx.doi.org/10.2175/106143097x135028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

McCord, Stephen A., Johanna L. Kollar, and Te-Chou A. Huang. "Lake and reservoir management." Water Environment Research 70, no. 4 (June 1998): 767–80. http://dx.doi.org/10.2175/106143098x134488.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Thakur, G. C. "What Is Reservoir Management?" Journal of Petroleum Technology 48, no. 06 (June 1, 1996): 520–25. http://dx.doi.org/10.2118/26289-jpt.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Saputelli, Luigi, Michael Nikolaou, and Michael J. Economides. "Self-Learning Reservoir Management." SPE Reservoir Evaluation & Engineering 8, no. 06 (December 1, 2005): 534–47. http://dx.doi.org/10.2118/84064-pa.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Straškraba, M. "Lake and reservoir management." SIL Proceedings, 1922-2010 26, no. 1 (December 1996): 193–209. http://dx.doi.org/10.1080/03680770.1995.11900703.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Wurbs, Ralph A. "Reservoir Management in Texas." Journal of Water Resources Planning and Management 113, no. 1 (January 1987): 130–48. http://dx.doi.org/10.1061/(asce)0733-9496(1987)113:1(130).

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Olem, Harvey, Steve Livengood, and Kirsten M. Sanda. "Lake and reservoir management." Water Environment Research 64, no. 4 (June 1992): 523–31. http://dx.doi.org/10.1002/j.1554-7531.1992.tb00036.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Olem, Harvey. "Lake and reservoir management." Water Environment Research 65, no. 4 (June 1993): 480–86. http://dx.doi.org/10.1002/j.1554-7531.1993.tb00080.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Olem, Harvey, and Jonathan Simpson. "Lake and reservoir management." Water Environment Research 66, no. 4 (June 1994): 489–96. http://dx.doi.org/10.1002/j.1554-7531.1994.tb00120.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Fu, Guangtao, Guangheng Ni, and Chi Zhang. "Recent Advances in Adaptive Catchment Management and Reservoir Operation." Water 11, no. 3 (February 27, 2019): 427. http://dx.doi.org/10.3390/w11030427.

Full text

Abstract:

This editorial introduces the latest research advances in the special issue on catchment management and reservoir operations. River catchments and reservoirs play a central role in water security, community wellbeing and social-economic prosperity, but their operators and managers are under increasing pressures to meet the challenges from population growth, economic activities and changing climates in many parts of the world. This challenge is tackled from various aspects in the 27 papers included in this special issue. A synthesis of these papers is provided, focusing on four themes: reservoir dynamics and impacts, optimal reservoir operation, climate change impacts, and integrated modelling and management. The contributions are discussed in the broader context of the field and future research directions are identified to achieve sustainable and resilient catchment management.

APA, Harvard, Vancouver, ISO, and other styles

46

Lee, Jaenam, and Hyungjin Shin. "Agricultural Reservoir Operation Strategy Considering Climate and Policy Changes." Sustainability 14, no. 15 (July 22, 2022): 9014. http://dx.doi.org/10.3390/su14159014.

Full text

Abstract:

Agricultural water is affected by climate change and water management. Agricultural reservoirs are increasing demand on the environmental water supply because the Korean government has recently implemented an integrated water resource management policy. However, agricultural reservoirs are still in operation solely to supply agricultural water. To examine sustainable agricultural water management under climate change, we analyzed the strategy of operating regulations to efficiently distribute agricultural water as environmental water. We simulated the agricultural reservoir operation, analyzing its water supply capacity by applying operation regulations. The simulation predicted that future water supply capacity would decrease if the existing operation were maintained, and agricultural reservoir operation will be necessary in the future. The proposed reservoir operating strategy decreased the maximum water shortage and number of water shortage days compared with the existing operation with the required water supply. Our results can contribute to agricultural reservoir operation strategies and sustainable water management in response to climate change and provide decision-making guidance on water distribution for environmental use in response to water management policy changes.

APA, Harvard, Vancouver, ISO, and other styles

47

Ghobadi, Mokhtar, and Hesam Seyed Kaboli. "Developing a Web-based decision support system for reservoir flood management." Journal of Hydroinformatics 22, no. 3 (April 8, 2020): 641–62. http://dx.doi.org/10.2166/hydro.2020.185.

Full text

Abstract:

Abstract Proper management of reservoirs in flood conditions minimizes flood damage and keeps the reservoir in a stable condition. This paper presents a Web-based decision support system of reservoir flood management (WDRFM) for reservoirs with gated spillways. WDRFM is capable of estimating the current situation of the reservoir and before the flood reaches the reservoir, provides the operator with suggestions to have optimal control over gates, using multistage simulation-optimization models to minimize flood damage downstream. Investigating the possibility of changing the dam's discharge gates, carrying out dam pre-release, and announcing relevant flood control warnings can all be performed by WDRFM, while allowing the operator to determine such observations and make final decisions on a time step basis. To assess the performance of WDRFM, 15 scenarios in four groups for flood management were defined on April 14, 2016 at Dez Dam, Iran. A comparison of one scenario with similar initial conditions with the occurrence of flood event has shown that a daily peak discharge shows 997 m3/s decrease from that recorded by the operator. The ability to examine different scenarios based on the conditions at any time in the WDRFM enables the decision-makers and operators to confront various circumstances.

APA, Harvard, Vancouver, ISO, and other styles

48

Campos, Jody, Iran Eduardo Lima Neto, Ticiana Marinho Studart, and José Nilson Beserra Campos. "Influence of sediment distribution on the relationships among reservoir yield, spill, and evaporation losses." Engenharia Sanitaria e Ambiental 23, no. 5 (October 2018): 849–56. http://dx.doi.org/10.1590/s1413-41522018177058.

Full text

Abstract:

ABSTRACT This study shows how the sedimentation process in reservoirs affects the yield-spill-evaporation losses in reservoirs of Ceará State, Brazilian Northeast. Reservoirs are assumed to have, initially, inverted conical shape. Three forms of sedimentation were investigated: type 1, with deposition occurring parallel to the wetted perimeter; type 2, deposition distributed proportionally to the water depth; and, type 3, deposition concentrated in the reservoir bottom. These sedimentation patterns were found in many reservoirs in Ceará, with capacity ranging from about 0.5 to 100 hm3. Nevertheless, type 2 pattern was the most frequent. In this paper, five large reservoirs, over 100 hm3, were studied using Monte Carlo approach, and considering the silting over the time horizon. It was found that sediment distribution can significantly affect the yield-spill-evaporation trade-off on large reservoirs. Type 1 results have the lowest impact on reservoir yield, followed by type 2 and type 3. For Cedro reservoir, the yield would go to zero in 2115, assuming a type 3 deposition pattern. These results reinforce the need for monitoring sedimentation in large reservoirs in the Brazilian semiarid region. In addition, this study provides a relatively simple methodology to predict the impact of siltation on reservoir yield-spill-evaporation relationships, for the three most found patterns of sedimentation.

APA, Harvard, Vancouver, ISO, and other styles

49

Kosasaeng, Suwapat, Nirat Yamoat, Seyed Mohammad Ashrafi, and Anongrit Kangrang. "Extracting Optimal Operation Rule Curves of Multi-Reservoir System Using Atom Search Optimization, Genetic Programming and Wind Driven Optimization." Sustainability 14, no. 23 (December 5, 2022): 16205. http://dx.doi.org/10.3390/su142316205.

Full text

Abstract:

This research aims to apply optimization techniques using atom search optimization (ASO), genetic programming (GP), and wind-driven optimization (WDO) with a reservoir simulation model for searching optimal rule curves of a multi-reservoir system, using the objective function with the minimum average quantity of release excess water. The multi-reservoir system consisted of five reservoirs managed by a single reservoir that caused severe problems in Sakon Nakhon province, Thailand, which was hit by floods in 2017. These included Huai Nam Bo Reservoir, the Upper Huai Sai-1 Reservoir, the Upper Huai Sai-2 Reservoir, the Upper Huai Sai-3 Reservoir, and the Huai Sai Khamin Reservoir. In this study, the monthly reservoir rule curves, the average monthly inflow to the reservoirs during 2005–2020, the water demand of the reservoirs, hydrological data, and physical data of the reservoirs were considered. In addition, the performance of the newly obtained rule curves was evaluated by comparing the operation with a single reservoir and the operation with a multi-reservoir network. The results showed situations of water shortage and water in terms of frequency, duration, average water, and maximum water. The newly obtained rule curves from the multi-reservoir system case showed an average water excess of 43.722 MCM/year, which was less than the optimal curves from the single reservoir case, where the average water excess was 45.562 MCM/year. An analysis of the downstream reservoir of the multi-reservoir system, which diverts water from the upstream reservoirs, was performed. The results showed that the new optimal rule curves of ASO, GP, and WDO operated as a multi-reservoir system performed better than when operated as a single reservoir. Therefore, this research is suitable for sustainable water management without construction.

APA, Harvard, Vancouver, ISO, and other styles

50

Lowther, S. A., T. Mir, M. K. Bile, and R. Abdul Hafiz. "Characteristics of districts in Pakistan with persistent transmission of wild poliovirus, 2000-2001." Eastern Mediterranean Health Journal 10, no. 4-5 (September 13, 2004): 582–90. http://dx.doi.org/10.26719/2004.10.4-5.582.

Full text

Abstract:

We sought to identify factors associated with being a reservoir district for wild poliovirus in Pakistan. Differences between reservoir and non-reservoir districts were identified using acute flaccid paralysis surveillance data, population census statistics and data from a survey of district health officials [DHOs]. Of the 11 poliovirus reservoir districts identified, population density was significantly higher [median 550 persons/km2] than the non-reservoirs [median 175 persons/km2]. DHOs from reservoir districts more often reported that planning was affected by refugees and they had more frequent DHO transfers compared with non-reservoir districts. Multivariate analysis confirmed that reservoirs more often had high population density and frequent DHO transfers. Assessment of district-level and management characteristics can supplement surveillance methods to further improve health programmes

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Reservoir management'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles