Journal articles: 'Infoworks'

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Bouteligier, R., G. Vaes, J. Berlamont, C. Flamink, J. G. Langeveld, and F. Clemens. "Advection-dispersion modelling tools: what about numerical dispersion?" Water Science and Technology 52, no. 3 (August 1, 2005): 19–27. http://dx.doi.org/10.2166/wst.2005.0057.

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In general the transport of dissolved substances and fine suspended particles is governed by the one-dimensional advection-dispersion equation. In order to model the transport of dissolved substances and fine suspended particles, the advection-dispersion equation is incorporated into commonly used urban drainage modelling tools such as InfoWorks CS (Wallingford Software, United Kingdom) and MOUSE (DHI Software, Denmark). Two examples show the use of InfoWorks CS and MOUSE using standard model settings. Modelling results using tracer experiments show that numerical model parameters need to be altered in order to calibrate the model. Using tracer experiments as a model calibration tool, it is shown that a non-negligible amount of dispersion is generated by InfoWorks CS and MOUSE and that it is in fact the numerical dispersion that is calibrated.

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Bailey, Olivia, Ljiljana Zlatanovic, Jan Peter van der Hoek, Zoran Kapelan, Mirjam Blokker, Tom Arnot, and Jan Hofman. "A Stochastic Model to Predict Flow, Nutrient and Temperature Changes in a Sewer under Water Conservation Scenarios." Water 12, no. 4 (April 21, 2020): 1187. http://dx.doi.org/10.3390/w12041187.

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Reducing water use could impact existing sewer systems but this is not currently well understood. This work describes a new flow and wastewater quality model developed to investigate this impact. SIMDEUM WW® was used to generate stochastic appliance-specific discharge profiles for wastewater flow and concentration, which were fed into InfoWorks® ICM to quantify the impacts within the sewer network. The model was validated using measured field data from a sewer system in Amsterdam serving 418 households. Wastewater concentrations of total suspended solids (TSS), chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN) and total phosphorus (TPH) were sampled on an hourly basis, for one week. The results obtained showed that the InfoWorks® model predicted the mass flow of pollutants well (R-values 0.69, 0.72 and 0.75 for COD, TKN and TPH respectively) but, due to the current lack of a time-varying solids transport model within InfoWorks®, the prediction for wastewater concentration parameters was less reliable. Still, the model was deemed capable of analysing the effects of three water conservation strategies (greywater reuse, rainwater harvesting and water-saving appliances) on flow, nutrient concentrations, and temperature in sewer networks. Results show through a 62% reduction in sewer flow, COD, TKN and TPH concentrations increased by up to 111%, 84% and 75% respectively, offering more favourable conditions for nutrient recovery.

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李, 亚琳. "Application of InfoWorks RS to simulate Dike-Break Floods." Journal of Water Resources Research 06, no. 05 (2017): 443–51. http://dx.doi.org/10.12677/jwrr.2017.65052.

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Wulandarie, Srie. "INTEGRASI SIG-INFOWORKS RIVER SIMULATION UNTUK PEMODELAN HIDRODINAMIK SUNGAI SADDANG DAN SUNGAI MATA ALLO." Jurnal Environmental Science 2, no. 2 (April 30, 2020): 178. http://dx.doi.org/10.35580/jes.v2i2.13331.

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AbstractThe purpose of this study was to determine the hydrodynamic model of the river so that can know the capacity of the river to accommodate the incoming water flow. The simulation models can be used in structural mitigation plan as an attempt to prevent flooding in the future. The application program used to create hydrodynamic models that Infoworks River Simulation integrated with GIS. Data cross-section of the river as much as 39 points inputted into Infoworks River Simulation program. Furthermore, the discharge input the Saddang River and the Mata Allo River to determine variations in water level at each cross-section. The results of this study showed an average increase in water level of the Saddang and Mata Allo River in the event of the maximum discharge of 2.59 meters. Sectional increased water levels are all cross sections along the Saddang and Mata Allo River Saddang used in modeling the variation of the rise in water level of 0.8 to 5.39 meters.

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Sheng, Jian Guo, Yu Di Dan, Cang Song Liu, and Lu Ming Ma. "Study of Simulation in Storm Sewer System of Zhenjiang Urban by Infoworks ICM Model." Applied Mechanics and Materials 193-194 (August 2012): 683–86. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.683.

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Through a typical rainstorm process, the rainwater outlet amount and the catchment area of Zhenjiang urban is collected. It is simulated by Infoworks ICM model, the corresponding parameters of substitution are applied. The results found: The model can better reflect heavy rain or rainstorm of rainwater outlet catchment case of Zhenjiang urban.

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Mah, D. Y. S., N. C. Nam, F. J. Putuhena, and P. L. Law. "Modelling of Batang Rejang for Extreme Events." Journal of Civil Engineering, Science and Technology 4, no. 3 (December 1, 2013): 1–5. http://dx.doi.org/10.33736/jcest.119.2013.

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Flood is a natural hazard. It happens when the water in a river channel is beyond the capacity of the channel to carry while the overflowing water is called as floodwater. Flood causes damage to life and property when it strikes a vulnerable population in the affected area. There are several townships located along Batang Rejang such as Kapit, Song, Kanowit and Sibu. The main objective of this paper is to develop a river model to map the extreme events for Batang Rejang. The method used in is river modelling by using InfoWorks RS software. This method is simulating the Batang Rejang in order to view the behaviours of the river in response to conditions and effects of extreme events over a given period of time. Flood maps computed from InfoWorks RS are for flood extent analysis as it provides insights to the damage for different locations at different flows. The maps are also useful for related authorities or parties to locate human activities at the catchment area and to carry out emergency flood plans in the future.

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Ahmad, Rasheed, Alberto Bechara, Vahe Kokorian, Robert Trivino, Felicity Bennett, and Giny Jacob. "RM Clayton Water Reclamation Center - Hydraulic Modeling in InfoWorks ICM." Proceedings of the Water Environment Federation 2018, no. 12 (January 1, 2018): 2926–49. http://dx.doi.org/10.2175/193864718825135216.

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R. Biswas, Rahul. "Modelling Seismic effects on a Sewer Network using Infoworks ICM." Indian Journal of Science and Technology 10, no. 39 (December 9, 2017): 1–9. http://dx.doi.org/10.17485/ijst/2017/v10i39/116986.

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Yang, Hui, Xin Tong, and Defei Gou. "Study on the waterlogging operation effects of InfoWorks ICM dispatching strategies." E3S Web of Conferences 228 (2021): 01009. http://dx.doi.org/10.1051/e3sconf/202122801009.

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In this paper, we select the H river basin of a city in northern China as the test section of deep tunnel construction project and use InfoWorks ICM to establish a two-dimensional hydraulic model in the basin. The basin is divided into 9 subsystems from T1 to T9 for ease of research, study the waterlogging control effect of the optimal dispatching operation strategies of deep tunnel in the basin.The results show that the waterlogging control effect meets the construction target of deep tunnel project, after the drainage of deep tunnel, the rainfall recurrence period of waterlogging risk of each subsystem is increased from more than once every year to once every ten years.

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Sidek, Lariyah Mohd, Aminah Shakirah Jaafar, Wan Hazdy Azad Wan Abdul Majid, Hidayah Basri, Mohammad Marufuzzaman, Muzad Mohd Fared, and Wei Chek Moon. "High-Resolution Hydrological-Hydraulic Modeling of Urban Floods Using InfoWorks ICM." Sustainability 13, no. 18 (September 14, 2021): 10259. http://dx.doi.org/10.3390/su131810259.

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Malaysia, being a tropical country located near the equatorial doldrums, experiences the annual occurrence of flood hazards due to monsoon rainfalls and urban development. In recent years, environmental policies in the country have shifted towards sustainable flood risk management. As part of the development of flood forecasting and warning systems, this study presented the urban flood simulation using InfoWorks ICM hydrological−hydraulic modeling of the Damansara catchment as a case study. The response of catchments to the rainfall was modeled using the probability distributed moisture (PDM) model due to its capability for large catchments with long-term runoff prediction. The interferometric synthetic aperture radar (IFSAR) technique was used to obtain high-resolution digital terrain model (DTM) data. The calibrated and validated model was first applied to investigate the effectiveness of the existing regional ponds on flood mitigation. For a 100-year flood, the extent of flooded areas decreased from 12.41 km2 to 3.61 km2 as a result of 64-ha ponds in the catchment, which is equivalent to a 71% reduction. The flood hazard maps were then generated based on several average recurrence intervals (ARIs) and uniform rainfall depths, and the results showed that both parameters had significant influences on the magnitude of flooding in terms of flood depth and extent. These findings are important for understanding urban flood vulnerability and resilience, which could help in sustainable management planning to deal with urban flooding issues.

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Cheng, Tao, Zongxue Xu, Siyang Hong, and Sulin Song. "Flood Risk Zoning by Using 2D Hydrodynamic Modeling: A Case Study in Jinan City." Mathematical Problems in Engineering 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/5659197.

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Climate change and rapid urbanization have aggravated the rainstorm flood in Jinan City during the past decades. Jinan City is higher in the south and lower in the north with a steep slope inclined from the south to the north. This results in high-velocity overland flow and deep waterlogging, which poses a tremendous threat to pedestrians and vehicles. Therefore, it is vital to investigate the rainstorm flood and further perform flood risk zoning. This study is carried out in the “Sponge City Construction” pilot area of Jinan City, where the InfoWorks ICM 2D hydrodynamic model is utilized for simulating historical and designed rainfall events. The model is validated with observations, and the causes for errors are analyzed. The simulated water depth and flow velocity are recorded for flood risk zoning. The result shows that the InfoWorks ICM 2D model performed well. The flood risk zoning result shows that rainfalls with larger recurrence intervals generate larger areas of moderate to extreme risk. Meanwhile, the zoning results for the two historical rainfalls show that flood with a higher maximum hourly rainfall intensity is more serious. This study will provide scientific support for the flood control and disaster reduction in Jinan City.

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Rubinato, Matteo, James Shucksmith, Adrian J. Saul, and Will Shepherd. "Comparison between InfoWorks hydraulic results and a physical model of an urban drainage system." Water Science and Technology 68, no. 2 (July 1, 2013): 372–79. http://dx.doi.org/10.2166/wst.2013.254.

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Urban drainage systems are frequently analysed using hydraulic modelling software packages such as InfoWorks CS or MIKE-Urban. The use of such modelling tools allows the evaluation of sewer capacity and the likelihood and impact of pluvial flood events. Models can also be used to plan major investments such as increasing storage capacity or the implementation of sustainable urban drainage systems. In spite of their widespread use, when applied to flooding the results of hydraulic models are rarely compared with field or laboratory (i.e. physical modelling) data. This is largely due to the time and expense required to collect reliable empirical data sets. This paper describes a laboratory facility which will enable an urban flood model to be verified and generic approaches to be built. Results are presented from the first phase of testing, which compares the sub-surface hydraulic performance of a physical scale model of a sewer network in Yorkshire, UK, with downscaled results from a calibrated 1D InfoWorks hydraulic model of the site. A variety of real rainfall events measured in the catchment over a period of 15 months (April 2008–June 2009) have been both hydraulically modelled and reproduced in the physical model. In most cases a comparison of flow hydrographs generated in both hydraulic and physical models shows good agreement in terms of velocities which pass through the system.

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Salarpour, Mohsen, Norhan Abd Rahman, and Zulkifli Yusop. "Simulation of Flood Extent Mapping by InfoWorks RS-Case Study for Tropical Catchment." Journal of Software Engineering 5, no. 4 (September 15, 2011): 127–35. http://dx.doi.org/10.3923/jse.2011.127.135.

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Awang Ali, Awang Nasrizal, and Junaidah Ariffin. "Model Reliability Assessment: A Hydrodynamic Modeling Approach for Flood Simulation in Damansara Catchment Using InfoWorks RS." Advanced Materials Research 250-253 (May 2011): 3769–75. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3769.

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This paper presents the flood inundation model using a hydrodynamic approach for flood simulation. A Digital Elevation Model (DEM) for Damansara Catchment was developed and integrated into the InfoWorks River Simulation (RS) program. Hydrographic surveying activity was carried out to collect existing Damansara River cross-section. The 3D flood model was calibrated using the 26th February 2006 and 15th October 2008 flooding event data. The model was validated using the flooding event on 21st March 2007. This computer simulation results produced hydrograph that indicates the capability of the model in dealing with regional flood analysis for future usage in designing structural flood measures.

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Bertrand, N., B. Jefferson, and P. Jeffrey. "Cross sectoral and scale-up impacts of greywater recycling technologies on catchment hydrological flows." Water Science and Technology 57, no. 5 (April 1, 2008): 741–46. http://dx.doi.org/10.2166/wst.2008.176.

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With the growth of urban areas and climate change, decisions need to be taken to improve water management. This paper reports an assessment of the impact of greywater recycling systems on catchment scale hydrological flows. A simulation model developed in InfoWorks CS (Wallingford Software Ltd) was used to evaluate how river flows, sewer flows, surface runoff and flooding events may be influenced when grey water recycling systems of different number and scale are implemented in a representative catchment. The simulations show the effectiveness of greywater recycling systems in reducing total wastewater volume and flood volume. However, no hydraulic impacts due to implementation of greywater was identified by the model.

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FURUICHI, Tetsuya, Masashi KESUDA, Yosuke MATSUMIYA, Masayuki MATSUURA, and Kaoru KARIYA. "Innovation of Infoworks and its practical use for flood risk communication in extremely urbanized watershed." Proceedings of the Water Environment Federation 2004, no. 15 (January 1, 2004): 135–40. http://dx.doi.org/10.2175/193864704784147836.

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Othman, Faridah, Noor Farahain Muhammad Amin, Lau Mi Fung, and Alaa Eldin Mohamed Elamin. "Utilizing GIS and Infoworks RS in Modelling the Flooding Events for a Tropical River Basin." Applied Mechanics and Materials 353-356 (August 2013): 2281–85. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2281.

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The large-scale atmospheric circulations and anomalies have been shown to have asignificant impact on seasonal weather over many parts of the world including Malaysia. Malaysia is located in the South East Asia with Southwest and Northeast Monsoons, experiences numerous flooding from year 1926 to 2012.Flood has become a regular disaster in Malaysia which happens every year in different states especially during the northeast monsoon. In December 2006 and January 2007, the Northeast Monsoon brought heavy rain through series of continuous extreme storms that caused devastating floods in the southern region of Peninsular Malaysia particularly to Kota Tinggi, Johor. The storms had occurred in two separate phases in late December 2006 and early January 2007 with atotal precipitation in four days exceeding twice of the monthly rainfall in which some places recorded a higher number. Johor River originates from Mt. Gemuruh and flows through the southeastern part of Johor and finally into the Straits of Johor. The 2006 average rainfall return period is 50-years while the 2007 gives more than 100-years return period. The objective of this study is to perform a flood simulation of the river basin using InfoWorks RS. The rainfall and stream flow data have been used as the hydrological input for the model. There are over 140 nodes representing the cross section throughout the length of the river. From the study, the main finding from the flood mapping process is that the simulated flood depth and flood risk map. Comparison between the simulated flood depth and observed flood depth has been done and shown a reasonable agreement.

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Ghadim, Hamed Benisi, and Lai Sai Hin. "Simulation of Rainfall-Runoff Response in Ecological Swale with On-Line Subsurface Detention Using Infoworks SD." Water Environment Research 89, no. 9 (September 1, 2017): 862–70. http://dx.doi.org/10.2175/106143017x14902968254764.

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Mah, D. Y. S., C. P. Hii, C. Y. Ong, and Y. Pui. "Evaluation of Flooding in Sg Gita Catchment, Kuching." Journal of Applied Science & Process Engineering 4, no. 1 (April 28, 2017): 127–41. http://dx.doi.org/10.33736/jaspe.372.2017.

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This paper outlines a methodology of flow routing with inclusion of downstream river water level applied to a Sg Gita urbanized catchment beside Sg Sarawak in Kuching city, Sarawak, Malaysia. Evaluations are done by demonstrating the modelling of flooding scenarios using InfoWorks River Simulation (RS) that stresses on different aspects specific to Sg Gita’s conditions, namely (1) impacts of high and low river water levels, (2) solely urban flooding and (3) the combination of the two. The outcomes indicate that the dynamics of downstream river water level influences the performance of the urban drainage that flowed into the river. Backwater is overriding the flows of urban drains. Therefore, the mentioned methodology is found superior than conventional methodology with only flow routing to represent the flow mechanism of urban catchment bounded by a downstream river.

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Kuok, King Kuok, Po Chan Chiu, and Mei Yun Chin. "Sarawak River Flow Behaviour after Matang Bypass Channel Construction during Low Tide Using InfoWorks River Simulation (RS)." Journal of Environmental Protection 12, no. 01 (2021): 36–48. http://dx.doi.org/10.4236/jep.2021.121004.

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Chen, Wenjie, Guoru Huang, and Han Zhang. "Urban stormwater inundation simulation based on SWMM and diffusive overland-flow model." Water Science and Technology 76, no. 12 (September 25, 2017): 3392–403. http://dx.doi.org/10.2166/wst.2017.504.

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Abstract With rapid urbanization, inundation-induced property losses have become more and more severe. Urban inundation modeling is an effective way to reduce these losses. This paper introduces a simplified urban stormwater inundation simulation model based on the United States Environmental Protection Agency Storm Water Management Model (SWMM) and a geographic information system (GIS)-based diffusive overland-flow model. SWMM is applied for computation of flows in storm sewer systems and flooding flows at junctions, while the GIS-based diffusive overland-flow model simulates surface runoff and inundation. One observed rainfall scenario on Haidian Island, Hainan Province, China was chosen to calibrate the model and the other two were used for validation. Comparisons of the model results with field-surveyed data and InfoWorks ICM (Integrated Catchment Modeling) modeled results indicated the inundation model in this paper can provide inundation extents and reasonable inundation depths even in a large study area.

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Wilson, Charles, William Leo, Peter Young, and Keith Mahoney. "Taking NYC's LTCP Modeling to the Next Level: A Unique Approach to Recalibrating 13 InfoWorks Sewer System Models." Proceedings of the Water Environment Federation 2013, no. 18 (January 1, 2013): 1295–310. http://dx.doi.org/10.2175/193864713813667881.

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Koudelak, Pavel, and Sue West. "Sewerage network modelling in Latvia, use of InfoWorks CS and Storm Water Management Model 5 in Liepaja city." Water and Environment Journal 22, no. 2 (June 2008): 81–87. http://dx.doi.org/10.1111/j.1747-6593.2007.00079.x.

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Hurford, A. P., Č. Maksimović, and J. P. Leitão. "Urban pluvial flooding in Jakarta: applying state-of-the-art technology in a data scarce environment." Water Science and Technology 62, no. 10 (November 1, 2010): 2246–55. http://dx.doi.org/10.2166/wst.2010.485.

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Available data relating to major pluvial flooding events in Jakarta, Indonesia were used to investigate the suitability of two different levels of sophistication in urban modelling tools for modelling these events. InfoWorks CS v9.0 was employed to build 1D and 1D/2D models of a 541 ha area of inner city Ciliwung River catchment which has a history of being particularly badly affected by flooding during heavy rainfall events. The study demonstrated that a 1D model was sufficient to simulate the flood extent of a major event using the limited data available. While the 1D/2D model also performed well, more data and time would have been required to match the 1D model's simulation of flood extent. Much more detailed data would have been required to produce reliable results in the 1D/2D model and to enable any kind of verification or calibration of the two models beyond visual comparison with crude flood extent maps.

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Bastien, Nicolas, Scott Arthur, Stephen Wallis, and Miklas Scholz. "The best management of SuDS treatment trains: a holistic approach." Water Science and Technology 61, no. 1 (January 1, 2010): 263–72. http://dx.doi.org/10.2166/wst.2010.806.

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The use of Sustainable Drainage Systems (SuDS) or Best Management Practice (BMP) is becoming increasingly common. However, rather than adopting the preferred “treatment train” implementation, many developments opt for end of pipe control ponds. This paper discusses the use of SuDS in series to form treatment trains and compares their potential performance and effectiveness with end of pipe solutions. Land-use, site and catchment characteristics have been used alongside up-to-date guidance, Infoworks CS and MUSIC to determine whole-life-costs, land-take, water quality and water quantity for different SuDS combinations. The results presented show that the use of a treatment train allows approaches differing from the traditional use of single SuDS, either source or “end of pipe”, to be proposed to treat and attenuate runoff. The outcome is a more flexible solution where the footprint allocated to SuDS, costs and water quality can be managed differently to satisfy more efficiently the holistically stakeholders' objectives.

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Bastien, N. R. P., S. Arthur, S. G. Wallis, and M. Scholz. "Runoff infiltration, a desktop case study." Water Science and Technology 63, no. 10 (May 1, 2011): 2300–2308. http://dx.doi.org/10.2166/wst.2011.181.

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The use of sustainable drainage systems (SuDS) or best management practice is becoming increasingly common. However, rather than adopting the preferred ‘treatment train’ implementation, many developments opt for end-of-pipe control ponds. This paper discusses the use of SuDS in series to form treatment trains and compares their potential performance and effectiveness with end-of-pipe solutions. Land-use, site and catchment characteristics have been used alongside up-to-date guidance, Infoworks CS and MUSIC to determine whole-life-costs, land-take, water quality and quantity for different SuDS combinations. The results presented show that the use of a treatment train allows approaches differing from the traditional use of single SuDS, either source or ‘end-of-pipe’, to be proposed to treat and attenuate runoff. The outcome is a more flexible solution where the footprint allocated to SuDS, costs and water quality can be managed differently to fully meet stakeholder objectives.

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Codo, Mayra, and Miguel A. Rico-Ramirez. "Ensemble Radar-Based Rainfall Forecasts for Urban Hydrological Applications." Geosciences 8, no. 8 (August 7, 2018): 297. http://dx.doi.org/10.3390/geosciences8080297.

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Radar rainfall forecasting is of major importance to predict flows in the sewer system to enhance early flood warning systems in urban areas. In this context, reducing radar rainfall estimation uncertainties can improve rainfall forecasts. This study utilises an ensemble generator that assesses radar rainfall uncertainties based on historical rain gauge data as ground truth. The ensemble generator is used to produce probabilistic radar rainfall forecasts (radar ensembles). The radar rainfall forecast ensembles are compared against a stochastic ensemble generator. The rainfall forecasts are used to predict sewer flows in a small urban area in the north of England using an Infoworks CS model. Uncertainties in radar rainfall forecasts are assessed using relative operating characteristic (ROC) curves, and the results showed that the radar ensembles overperform the stochastic ensemble generator in the first hour of the forecasts. The forecast predictability is however rapidly lost after 30 min lead-time. This implies that knowledge of the statistical properties of the radar rainfall errors can help to produce more meaningful radar rainfall forecast ensembles.

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Seng, Darrien Mah Yau, Frederik Josep Putuhena, Salim Said, and Law Puong Ling. "A study of ecological sanitation as an integrated urban water supply system: case study of sustainable strategy for Kuching City, Sarawak, Malaysia." Journal of Water and Health 7, no. 1 (October 1, 2008): 169–84. http://dx.doi.org/10.2166/wh.2009.103.

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A city consumes a large amount of water. Urban planning and development are becoming more compelling due to the fact of growing competition for water, which has lead to an increasing and conflicting demand. As such, investments in water supply, sanitation and water resources management is a strong potential for a solid return. A pilot project of greywater ecological treatment has been established in Kuching city since 2003. Such a treatment facility opens up an opportunity of wastewater reclamation for reuse as secondary sources of water for non-consumptive purposes. This paper aims to explore the potential of the intended purposes in the newly developed ecological treatment project. By utilizing the Wallingford Software model, InfoWorks WS (Water Supply) is employed to carry out a hydraulic modeling of a hypothetical greywater recycling system as an integrated part of the Kuching urban water supply, where the greywater is treated, recycled and reused in the domestic environment. The modeling efforts have shown water savings of about 40% from the investigated system reinstating that the system presents an alternative water source worth exploring in an urban environment.

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Basri, H., L. M. Sidek, D. S. Shih, H. C. Lloyd, W. H. Azad, and A. Z. Abdul Razad. "One Dimensional Shallow Water Equation Streamflow Modeling using WASH123D Model." International Journal of Engineering & Technology 7, no. 4.35 (November 30, 2018): 880. http://dx.doi.org/10.14419/ijet.v7i4.35.26274.

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Reservoir inflow forecasting assists dam operator in reservoir operation by providing advance information on lake level. This paper discusses on the application of the physical-based numerical model to simulate one-dimensional channel network using WASH123D Model. The model was developed to simulate streamflow at two locations namely Sg Kejar and Sg Tiang, located in the Temengor catchment. The WASH123D model performed channel routing using shallow water equation. The model input data includes rainfall from 5 rainfall stations, river cross sections and simulated runoff data using SCS Method. Due to unavailable observed data, results comparisons were performed using streamflow results obtained using InfoWorks RS Platform. The peak flow from simulation results at Sg Kejar & Sg Tiang Station is 152.6m3/s and 36.6m3/s. The analysis shows good agreement for both simulations with Nash-Sutcliffe Efficiency of 0.68 for Sg Kejar and 0.99 for Sg Tiang. It is suggested that model recalibration shall be made once there is enough water level data to enable more accurate representation of spatial heterogeneity in the catchment processes.

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Rouault, P., K. Schroeder, E. Pawlowsky-Reusing, and E. Reimer. "Consideration of online rainfall measurement and nowcasting for RTC of the combined sewage system." Water Science and Technology 57, no. 11 (June 1, 2008): 1799–804. http://dx.doi.org/10.2166/wst.2008.289.

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In Berlin, Germany, the demand for enhanced protection of the environment and the growing economic pressure have led to an increased application of control concepts within the sewage system. A global control strategy to regulate the pumpage of the combined sewage system to the treatment plant was developed and evaluated in a theoretical study. The objective was to reduce CSO. In this paper an extension of the existing control algorithm by information from online rainfall measurement and radar nowcasting is described. The rainfall information is taken into account by two additive terms describing the predicted volume from rainfall runoff. On the basis of numerical simulation the potential of these two complementary forecast terms in the global control algorithm to further reduce CSO is evaluated. The investigations are based on long-time simulations that are conducted with the dynamic flow routing model InfoWorks for three subcatchments of the Berlin drainage system. The results show that at the current Berlin system a CSO reduction of only 0.8% is possible. The effect of the forecast terms is limited by operational constraints. Limits are set to both, the delivery from each individual pump station and the total pumpage to the treatment plant.

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Moore, S. L., V. R. Stovin, M. Wall, and R. M. Ashley. "A GIS-based methodology for selecting stormwater disconnection opportunities." Water Science and Technology 66, no. 2 (July 1, 2012): 275–83. http://dx.doi.org/10.2166/wst.2012.172.

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The purpose of this paper is to introduce a geographic information system (GIS)-based decision support tool that assists the user to select not only areas where (retrofit) sustainable drainage systems (SuDS) could be implemented within a large catchment (>100 ha), but also to allow discrimination between suitable SuDS techniques based on their likely feasibility and effectiveness. The tool is applied to a case study catchment within London, UK, with the aim of increasing receiving water quality by reducing combined sewer overflow (CSO) spill frequency and volume. The key benefit of the tool presented is to allow rapid assessment of the retrofit SuDS potential of large catchments. It is not intended to replace detailed site investigations, but may help to direct attention to sites that have the greatest potential for retrofit SuDS implementation. Preliminary InfoWorks CS modelling of ‘global disconnections’ within the case study catchment, e.g. the removal of 50% of the total impervious area, showed that CSO spill volume could be reduced by 55 to 78% during a typical year. Using the disconnection hierarchy developed by the authors, the feasibility of retrofit SuDS deployment within the case study catchment is assessed, and the implications discussed.

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Yu, Yang, Keisuke Kojima, Kyoungjin An, and Hiroaki Furumai. "Cluster analysis for characterization of rainfalls and CSO behaviours in an urban drainage area of Tokyo." Water Science and Technology 68, no. 3 (August 1, 2013): 544–51. http://dx.doi.org/10.2166/wst.2013.253.

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Combined sewer overflow (CSO) from urban areas is recognized as a major pollutant source to the receiving waters during wet weather. This study attempts to categorize rainfall events and corresponding CSO behaviours to reveal the relationship between rainfall patterns and CSO behaviours in the Shingashi urban drainage areas of Tokyo, Japan where complete service by a combined sewer system (CSS) and CSO often takes place. In addition, outfalls based on their annual overflow behaviours were characterized for effective storm water management. All 117 rainfall events recorded in 2007 were simulated by a distributed model InfoWorks CS to obtain CSO behaviours. The rainfall events were classified based on two sets of parameters of rainfall pattern as well as CSO behaviours. Clustered rainfall and CSO groups were linked by similarity analysis. Results showed that both small and extreme rainfalls had strong correlations with the CSO behaviours, while moderate rainfall had a weak relationship. This indicates that important and negligible rainfalls from the viewpoint of CSO could be identified by rainfall patterns, while influences from the drainage area and network should be taken into account when estimating moderate rainfall-induced CSO. Additionally, outfalls were finally categorized into six groups indicating different levels of impact on the environment.

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Li, Huifeng, Lijun Lu, Xiangfeng Huang, Haidong Shangguan, and Zhongqing Wei. "An optimal design strategy of decentralized storage tank locations for multi-objective control of initial rainwater quality." Water Supply 20, no. 6 (May 20, 2020): 2069–81. http://dx.doi.org/10.2166/ws.2020.097.

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Abstract In recent years, frequent non-point source pollution has raised serious challenges for urban water environmental management. The efficiency and cost of water quality storage tanks, which can prevent and control urban pollution effectively, are significantly affected by their locations. However, few studies have determined the location of decentralized storage tanks with consideration of the characteristics of initial rainwater quality, which has led to unsatisfactory or extravagant design. Therefore, a new design strategy is proposed to optimize the locations of water quality storage tanks using the InfoWorks ICM model in this study. It includes two basic steps. Firstly, the pollution severity of each node in the corresponding subcatchment is evaluated and ranked through the matter element analysis method and analytic hierarchy process. Secondly, all the nodes are precisely sorted by their excessive multiples using the single factor index method. Its application in the design of the decentralized storage tank locations in Fuzhou, China, proved that the proposed strategy can reduce the total volume of decentralized storage tanks to 0.38 times that of a terminal tank. The strategy presented in this study may also be useful in other research on storage tank design in urban pollution prevention and control systems.

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Archetti, R., A. Bolognesi, A. Casadio, and M. Maglionico. "Development of flood probability charts for urban drainage network in coastal areas through a simplified joint assessment approach." Hydrology and Earth System Sciences 15, no. 10 (October 11, 2011): 3115–22. http://dx.doi.org/10.5194/hess-15-3115-2011.

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Abstract. The operating conditions of urban drainage networks during storm events depend on the hydraulic conveying capacity of conduits and also on downstream boundary conditions. This is particularly true in coastal areas where the level of the receiving water body is directly or indirectly affected by tidal or wave effects. In such cases, not just different rainfall conditions (varying intensity and duration), but also different sea-levels and their effects on the network operation should be considered. This paper aims to study the behaviour of a seaside town storm sewer network, estimating the threshold condition for flooding and proposing a simplified method to assess the urban flooding severity as a function of climate variables. The case study is a portion of the drainage system of Rimini (Italy), implemented and numerically modelled by means of InfoWorks CS code. The hydraulic simulation of the sewerage system identified the percentage of nodes of the drainage system where flooding is expected to occur. Combining these percentages with both climate variables' values has lead to the definition of charts representing the combined degree of risk "rainfall-sea level" for the drainage system under investigation. A final comparison between such charts and the results obtained from a one-year rainfall-sea level time series has demonstrated the reliability of the analysis.

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Bailey, O., T. C. Arnot, E. J. M. Blokker, Z. Kapelan, and J. A. M. H. Hofman. "Predicting impacts of water conservation with a stochastic sewer model." Water Science and Technology 80, no. 11 (December 1, 2019): 2148–57. http://dx.doi.org/10.2166/wst.2020.031.

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Abstract Population growth and climate change put a strain on water resources; hence, there are growing initiatives to reduce water use. Reducing household water use will likely reduce sewer input. This work demonstrates the use of a stochastic sewer model to quantify the effect water conservation has on sewer hydraulics and wastewater concentration. Probabilistic discharge patterns have been developed using SIMDEUM WW® and fed into hydraulic modelling software InfoWorks ICM® to produce likely flow and quality profiles for five future water use scenarios. The scenarios tested were developed to outline how commercial and political factors may change water use in future. Scenario testing revealed that 15–60% water reduction reflected a 1–48% drop in the morning peak flow. The water use reduction was predicted to increase wastewater concentrations of chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN) and total phosphorus (TPH) by 55–180%, 19–116% and 30–206% respectively. The sewer flow model was developed, calibrated and validated using a case study in the Wessex Water region of the UK and all future scenarios were compared to the validated baseline case. This wastewater flow and quality model allows scenario testing, which could help redesign future sewer networks to better prepare for water conservation strategies.

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Aryal, R. K., H. K. P. K. Jinadasa, H. Furumai, and F. Nakajima. "A long-term suspended solids runoff simulation in a highway drainage system." Water Science and Technology 52, no. 5 (September 1, 2005): 159–67. http://dx.doi.org/10.2166/wst.2005.0130.

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A long-term monitoring investigation was carried out in a highway drainage system in Winterthur, Switzerland. Several runoff quality and quantity simulations were carried out using the distributed model “InfoWorks-CS”. Serial rainfall monitoring data was used for investigation of SS runoff behavior from the highway. Under continuous rainfall conditions, the quantity simulation showed a good agreement with the measured hydrograph. However, in some cases where rainfall was not continuous, overestimation of the peak height was found at the later stage after the end of the rainfall. It was believed that the initial/depression loss on the road surface was recovered during the halting period of rainfall. The consideration of regenerated depression loss significantly improved runoff simulation results in the on-and-off type rainfall events. A single event quality simulation underestimated the SS load in light rainfall events. One of the reasons was possibly inadequate consideration of pipe sediment conditions. A long term simulation was carried out to establish the initial condition of surface and pipe sediment for the target event. The newly simulated pollutograph gave a good agreement with the measured one. It revealed that it was essential to consider appropriateness of the initial condition of pipe sediment as well as surface sediment.

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Sameer, Mohammed, and Rabee Rustum. "Studying the impact of construction dewatering discharges to the urban storm drainage network(s) of Doha city using infoworks integrated catchment modeling (ICM)." MATEC Web of Conferences 120 (2017): 08010. http://dx.doi.org/10.1051/matecconf/201712008010.

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38

Archetti, R., A. Bolognesi, A. Casadio, and M. Maglionico. "Development of flood probability charts for urban drainage network in coastal areas through a simplified joint assessment approach." Hydrology and Earth System Sciences Discussions 8, no. 2 (April 15, 2011): 3793–816. http://dx.doi.org/10.5194/hessd-8-3793-2011.

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Abstract. The operating conditions of urban drainage networks during storm events certainly depend on the hydraulic conveying capacity of conduits but also on downstream boundary conditions. This is particularly true in costal areas where the level of the receiving water body is directly or indirectly affected by tidal or wave effects. In such cases, not just different rainfall conditions (varying intensity and duration), but also different sea-levels and their effects on the network operation should be considered. This paper aims to study the behaviour of a seaside town storm sewer network, estimating the threshold condition for flooding and proposing a simplified method to assess the urban flooding severity as a function of either climate variables. The case study is a portion of the drainage system of Rimini (Italy), implemented and numerically modelled by means of InfoWorks CS code. The hydraulic simulation of the sewerage system has therefore allowed to identify the percentage of nodes of the drainage system where flooding is expected to occur. Combining these percentages with both climate variables values has lead to the definition charts representing the combined degree of risk "sea-rainfall" for the drainage system under investigation. A final comparison between such charts and the results obtained from a one-year sea-rainfall time series has confirmed the reliability of the analysis.

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Liew, Yuk San, Safari Mat Desa, Md Nasir Md. Noh, Mou Leong Tan, Nor Azazi Zakaria, and Chun Kiat Chang. "Assessing the Effectiveness of Mitigation Strategies for Flood Risk Reduction in the Segamat River Basin, Malaysia." Sustainability 13, no. 6 (March 16, 2021): 3286. http://dx.doi.org/10.3390/su13063286.

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Flooding is a frequent, naturally recurring phenomenon worldwide that can become disastrous if not addressed accordingly. This paper aims to evaluate the impacts of land use change and climate change on flooding in the Segamat River Basin, Johor, Malaysia, with 1D–2D hydrodynamic river modeling, using InfoWorks Integrated Catchment Modeling (ICM). The study involved the development of flood maps for four different scenarios: (1) future land use in 2030; (2) the impacts of climate change; (3) three mitigation strategies comprising detention ponds, rainwater harvesting systems (RWHSs), and permeable pavers; and (4) a combination of these three mitigation strategies. The obtained results show increases in the flood peaks under both the land use change and climate change scenarios. With the anticipated increase in development activities within the vicinity up to 2030, the overall impact of urbanization on the extent of flooding would be rather moderate, as the upper and middle parts of the basin would still be dominated by forests and agricultural activities (approximately 81.13%). In contrast, the potential flood-inundated area is expected to increase from 12.25% to 16.64% under storms of 10-, 50-, 100-, and 1000-year average recurrence intervals (ARI). Interestingly, the simulation results suggest that only the detention pond mitigation strategy has a considerable impact on reducing floods, while the other two mitigation strategies have less flood reduction advantages for this agricultural-based rural basin located in a tropical region.

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Ferguson, Charlie, and Richard Fenner. "Evaluating the effectiveness of catchment-scale approaches in mitigating urban surface water flooding." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2168 (February 17, 2020): 20190203. http://dx.doi.org/10.1098/rsta.2019.0203.

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The argument for natural flood management in the UK has strengthened in recent years with increasing awareness of the potential benefits gained from upstream interventions (especially improvements in water quality, public amenities and biodiversity). This study aims to develop an understanding of another potential benefit—interventions promoting free discharge at downstream urban drainage outfalls by moderating water levels in receiving watercourses. A novel, coupled model (linking dynamic TOPMODEL, HEC-RAS and Infoworks ICM) is calibrated for the Asker catchment in Dorset, England. This predominantly rural watershed drains to the town of Bridport, frequently submerging a surface drainage outfall in a nearby housing estate. Two forms of upstream, catchment-scale intervention (hillslope tree planting and in-channel large woody debris) are modelled to understand their impacts on the functioning of the drainage network during both the calibration period and a range of design storms. The results indicate that interventions have the greatest positive impact during frequent events. For example, during a storm with a 10% annual exceedance probability (AEP), upstream NFM could reduce outfall inundation by up to 3.75 h and remove any surcharging of flow within the drainage system in Bridport. In more severe storms, the results suggest interventions could slightly prolong the time the outfall was submerged. However, by slowing the wider catchment's response during the 3.3% AEP storm, upstream interventions allow more water to escape the urban drainage system and reduce the maximum surface flooding extent within the housing estate by 35%. This article is part of the theme issue ‘Urban flood resilience’.

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Abd Jalil, Hassan, Harun Sobri, and Ismail Tarmizi. "Time of concentration for large catchment based on hydrodynamic modelling." MATEC Web of Conferences 250 (2018): 04002. http://dx.doi.org/10.1051/matecconf/201825004002.

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Flood mitigation design requires accurate computation of discharge at any interest location to sustain the protection level. The design flood hydrograph generates from rainfall runoff model which used unit hydrograph method depends on the time of concentration (Tc) of the catchment. Common factors which influence Tc are the catchment properties including length, slope, soil properties and surface cover. However, when dealing with large catchment, more complex factors which also requires attention are the rainfall intensity, catchment wetness and initial water in the channel due to rain prior to the storm event. For large catchment, the travelling time which govern the Tc is more dominant in the channel rather than on the soil surface. Since water flowing in the river channel is unsteady and nonuniform, the use of Manning formula is inappropriate. This paper explains the application of hydrodynamic modelling approach to determine Tc for large catchment with long river channel. A hydrodynamic river model for Sg Relai, Kelantan with area of 460 km2 and covering 90 km distance was developed using InfoWorks ICM. Results shown that as the rain intensity increased, the travelling time will be shortened. The traveling time also reduce when initial water level in the channel increase which indicate that Tc will reduce if the catchment already received some rainfall prior to the storm event. Based on this analysis and results, the use of hydrodynamic model as part of the rainfall runoff model is significant for large catchment to handle complex factor such as wide range of rainfall intensity, spatial effect and catchment wetness.

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Costa, Sandra, Rik Peters, Ricardo Martins, Luuk Postmes, Jan Jacob Keizer, and Peter Roebeling. "Effectiveness of Nature-Based Solutions on Pluvial Flood Hazard Mitigation: The Case Study of the City of Eindhoven (The Netherlands)." Resources 10, no. 3 (March 9, 2021): 24. http://dx.doi.org/10.3390/resources10030024.

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Urbanization leads to changes in the surface cover that alter the hydrological cycle of cities, particularly by increasing the impervious area and, thereby, reducing the interception, storage and infiltration capacity of rainwater. Nature-based solutions (NBS) can contribute to flood risk mitigation in urbanized areas by restoring hydrological functions. However, the effects of NBS on flood risk mitigation are complex and can differ substantially with the type of the NBS. Therefore, the effectiveness of NBS at the urban catchment scale is still subject to much debate, especially at the scale of urban catchments. In this study, the effects of different NBS on urban flood mitigation were evaluated for the city of Eindhoven in The Netherlands, as it has a history of urban flood events. To this end, various NBS scenarios were defined by municipal stakeholders and their impacts modelled with the numerical model Infoworks ICM. This was done for design storms with short, medium and long return periods (5, 10 and 100 years). Overall, the simulated NBS were effective in flood risk mitigation, reducing the flooded area as well as flood depth. The effectiveness of the individual NBS scenarios, however, depended strongly on the location and extension of the NBS, as well as on storm intensity. The effectiveness tended to increase with the increase in NBS surface area, while it tended to decrease with increasing storm intensity and, hence, return period. The NBS solution increasing street water storage was revealed to be more effective than those involving green car parks and green roofs. This study showed that numerical flooding models can be useful tools to assess the effects of NBS to reduce flood extent, water depth and/or velocity, providing insights that can support city planners to design and compare alternative strategies and plans for urban flood risk mitigation.

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Gunkel, M., and E. Pawlowsky-Reusing. "Field campaign on sediment transport behaviour in a pressure main from pumping station to wastewater treatment plant in Berlin." Water Science and Technology 75, no. 9 (February 13, 2017): 2025–33. http://dx.doi.org/10.2166/wst.2017.044.

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As part of the project KURAS, the Berliner Wasserbetriebe realized a field campaign in 2015 in order to increase the process knowledge regarding the behaviour of transported sediment in the pressure main leading from the pumpstation to the wastewater treatment plant. The field campaign was conducted because of a lack of knowledge about the general condition of the pressure main due to its bad accessibility and the suspicion of deposits caused by hydraulic underload. The practical evidence of the sediment transport performance of this part of the sewer system, dependent on different load cases, should present a basis for further analysis, for example regarding flushing measures. A positive side-effect of the investigation was the description of the amount of pollutants caused by different weather conditions in combined sewer systems and the alterations of the sewage composition due to biogenic processes during transport. The concept included the parallel sampling of the inflow at the pumpstation and the outflow at the end of the pressure main during different weather conditions. By calculating the inflow to the pressure main, as well as its outflow at different flow conditions, it was possible to draw conclusions in regard to the transport behaviour of sediment and the bioprocesses within an 8.5 km section of the pressure main. The results show clearly that the effects of sedimentation and remobilization depend on the flow conditions. The balance of the total suspended solids (TSS) load during daily variations in dry weather shows that the remobilization effect during the run-off peak is not able to compensate for the period of sedimentation happening during the low flow at night. Based on the data for dry weather, an average of 238 kg of TSS deposits in the pressure main remains per day. The remobilization of sediment occurs only due to the abruptly increased delivery rates caused by precipitation events. These high pollution loads lead to a sudden strain at the wastewater treatment plant. It was found that the sediment transport behaviour is characterized by sedimentation up to a flow velocity of 0.35 m/s, while remobilization effects occur above 0.5 m/s. The assumption of bad sediment transport performance in the pressure main was confirmed. Therefore, the results can be used as a basis for further analysis, for example regarding periodical flushing as a means of cleaning the pressure main. The findings, especially regarding the methods and processes, are transferable and can be applied to other pressure mains in combined sewer systems. Besides the outlined evaluation of the sediment transport behaviour of the pressure main, the collected data were used in the project to calibrate a sewer system model, including a water quality model for the catchment area, and as a contribution towards an early physically based sediment transport modelling in InfoWorks CS.

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Petrichenko, Larisa O. "Mobile-oriented Learning: Developing and Using Infoword Application «Informatics Dictionary»." International Journal of Psychosocial Rehabilitation 24, no. 5 (April 20, 2020): 4813–26. http://dx.doi.org/10.37200/ijpr/v24i5/pr2020193.

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Adnan, M. S., N. C. Ali, Y. Erfen, S. N. Rahmat, M. A. M. Razi, and S. Musa. "Analysis the Impact of Bridges Existance for the Segamat River Using Infowork RS." IOP Conference Series: Materials Science and Engineering 136 (July 2016): 012080. http://dx.doi.org/10.1088/1757-899x/136/1/012080.

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Pentzaropoulos, Georgios Constantine. "New technologies, the Infoworld, and the need for actionable knowledge." E-LOGOS 23, no. 2 (December 1, 2016): 51–61. http://dx.doi.org/10.18267/j.e-logos.437.

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Che Osmi, Siti Aisyah, Wan Faizal Wan Ishak, Mohammad Adam Azman, Abdullah Siddiqi Ismail, and Nurlin Abu Samah. "Development of water quality modelling using InfoWork river simulation in Malacca River, Malaysia and contribution towards Total Maximum Daily Load approach." IOP Conference Series: Earth and Environmental Science 169 (July 31, 2018): 012073. http://dx.doi.org/10.1088/1755-1315/169/1/012073.

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Teodoriu, Laura, Maria Christina Ungureanu, Letitia Leustean, Cristina Preda, Delia Ciobanu, Irena Grierosu, Mioara Matei, Roxana Iacob, and Cipriana Stefanescu. "Updated Incidence of Thyroid Cancer in the North East Region of Romania after 35 Years of Chernobyl Fallout. Is There a Link between?" Diagnostics 11, no. 5 (May 19, 2021): 907. http://dx.doi.org/10.3390/diagnostics11050907.

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Thyroid cancer (TC) represents a worldwide problem, the consistent growth of the incidence increment issues about management of risk factors and curative treatment. Updated statistical data are not complete in the North East region of Romania and need to be improved. Therefore, through this study, we aim to renew the existing data on thyroid cancer. We conducted a retrospective study covering a period of 10 years. Data were collected from a hospital information system (InfoWorld) between 2009 and 2019. Patients’ age groups were stratified in relation with the age at the moment of the Chernobyl event. A database was obtained (Microsoft Excel) and statistical correlations were applied. In the studied period, 1159 patients were diagnosed: 968 females and 191 males, distributed by region, with the highest addressability in Iasi (529), followed by neighboring counties. Age distribution displayed that most of the thyroid cancers were in the range 4060 years old (50.94%), followed by 60–80 years old (32.41%). Most patients were diagnosed with papillary carcinoma 63.10%, then follicular 14.7%, medullary 6.74% and undifferentiated 1.02%. Romania was in the vicinity of the radioactive cloud at Chernobyl fallout, so we must deliberate whether the increased incidence of thyroid cancer in the age group 40–60 years is associated with radiogenicity (iodine 131) given the fact that over has 35 years and the half-life of other radioisotopes like Caesium-137 and Strontium -90 is completed.

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Muhammad Amin, Noor Farahain, and Faridah Othman. "Generation of Flood Map Using Infoworks for Sungai Johor." International Journal of Integrated Engineering 10, no. 2 (May 1, 2018). http://dx.doi.org/10.30880/ijie.2018.10.02.026.

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Benisi Ghadim, Hamed, Lai Sai Hin, Chun Hooi Bu, and Ren Jie Chin. "Effectiveness of BIOECODS for peak flow attenuation: an appraisal using InfoWorks SD." Hydrological Sciences Journal, October 17, 2016, 1–10. http://dx.doi.org/10.1080/02626667.2016.1176175.

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Journal articles on the topic 'Infoworks'

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