Variable source area modelling in urbanizing watersheds

Valeo, Caterina; Moin, S. M. A.

doi:10.1016/s0022-1694(00)00153-0

Cited by 33 publications

(17 citation statements)

References 9 publications

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“…Another development in urban modeling that has advanced ecosystem modeling was the creation of a variable source area (VSA) model, traditionally applied to forested areas. VSA-based runoff prediction, which captures the relation between subsurface and surface moisture dynamics, was applied to urban areas by Valeo and Moin (2000) as TOPURBAN, a modification of the TOPMODEL method from Beven and Kirkby (Beven and Kirkby, 1979). TOPURBAN adapted the topographic index to remove impervious surface contributing area (e.g.…”

Section: Future Directions In Urban Runoff Advances In Model Simulationmentioning

confidence: 99%

Land Use and Land Cover Effects on Runoff Processes: Urban and Suburban Development

Endreny

2005

Encyclopedia of Hydrological Sciences

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Urban and suburban development alters watershed imperviousness and connectivity, resulting in alterations to the hydrologic and hydraulic runoff response. Stormwater conveyance devices have been incorporated into most development to address the goal of floodwater removal for protection of life and property. Urban and suburban development laws generally consider the stormwater drainage system as part of the basic infrastructure and leave right of way and space to locate the component parts. Drainage systems are designed to protect life, enable vehicular access, extend pavement life cycle, control the volume and velocity of stormwater runoff along curbs and gutters, and convey stormwater runoff to natural or human constructed drainage ways and receiving waters. Engineering equations have been developed to design construction for optimal runoff behavior, such as timing, volume, and rate, into, through, and from conveyance devices. Design equations are also utilized for assessing the performance of constructed environments, to ascertain whether stormwater devices need rehabilitation or expansion. New frontiers in stormwater include model spatially distributed development that incorporates high‐density elevation maps, radar rainfall, and details of remotely sensed infrastructure as well as ecological restoration simulation, including groundwater and river remediation for wildlife and recreation.

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Section: Future Directions In Urban Runoff Advances In Model Simulationmentioning

confidence: 99%

Land Use and Land Cover Effects on Runoff Processes: Urban and Suburban Development

Endreny

2005

Encyclopedia of Hydrological Sciences

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“…Furthermore, Kang et al (1998) illustrated the runoff characteristics of urbanization by utilizing the concept of linear cascading reservoirs. Meanwhile, Valeo and Moin (2000) used a model called TOPURBAN, a revision of TOPMODEL, to observe the interaction between parameters on urbanized watersheds, where urban areas were determined and Digital Elevation Models (DEM) were produced through a Geographical Information System (GIS). Finally, Gremillion et al (2000) applied environmental υ 18 O and a series of conservative-tracer mass-balance models to a storm event, to detect flow-path changes in a watershed undergoing urban development.…”

Section: Review Of Related Researchmentioning

confidence: 99%

An approach for evaluating the hydrological effects of urbanization and its application

Cheng

Wang

2002

Hydrological Processes

100

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Abstract:This study focuses mainly on observing urban development in Taiwan's Wu-Tu watershed from the perspective of urban hydrological theory. An approach is proposed for developing a method for incorporating available meteorological data to define the degree of change in a runoff hydrograph for urbanizing basins. The mean rainfall was estimated using the Kriging method. For calibration, two methods of calculating the effective rainfall (the -index method and the non-linear-programming (NLP) method) were used as model inputs, and the optimal global parameters of the linear reservoir model were then obtained from the shuffled complex evolution (SCE) algorithm. Twenty-six (1966Twenty-six ( -1991 and eight (1994)(1995)(1996)(1997) rainfall-runoff events were used for calibration and verification, respectively. The NLP method yielded better results than the -index method, especially for multipeak rainfall-runoff events. The regression equation determined the relationship between the parameters of the model and impervious areas. A comparison based on the results of the instantaneous unit hydrograph of the study area revealed that three decades of urbanization had increased the peak flow by 27%, and the time to peak was decreased by 4 h. The study simply describes the results of the impact of imperviousness on hydrological modelling.

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“…Despite these efforts, the use of TOPMODEL approach in an urban setting as shown in [6] indicated that the ISBA-TOPMODEL simulations underestimated total streamflow during dry periods whereas it overestimates streamflow during rain events and wet weather conditions. In the study by [29], modifications of TOPMODEL (TOPURBAN v.1 and v.2) were tested for urbanized watersheds by altering the topographic index and the mechanism to generate surface runoff but detailed descriptions on the processing of data including remote sensing data were missing. In fact, several studies [9][10][11]13,14] that have characterized urbanized land cover types for hydrological assessments have failed to adequately capture relevant spatial information of historical land surfaces in urban catchments.…”

Section: Introductionmentioning

confidence: 99%

Hydrological Impacts of Urbanization of Two Catchments in Harare, Zimbabwe

et al. 2014

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By increased rural-urban migration in many African countries, the assessment of changes in catchment hydrologic responses due to urbanization is critical for water resource planning and management. This paper assesses hydrological impacts of urbanization on two medium-sized Zimbabwean catchments (Mukuvisi and Marimba) for which changes in land cover by urbanization were determined through Landsat Thematic Mapper (TM) images for the years 1986, 1994 and 2008. Impact assessments were done through hydrological modeling by a topographically driven rainfall-runoff model (TOPMODEL). A satellite remote sensing based ASTER 30 metre Digital Elevation Model (DEM) was used to compute the Topographic Index distribution, which is a key input to the model. Results of land cover Woodlands decreased by more than 40% with a greater decrease in Marimba than Mukuvisi catchment. Simulations using TOPMODEL in Marimba and Mukuvisi catchments indicated streamflow increases of 84.8 % and 73.6 %, respectively, from 1980 to 2010. These increases coincided with decreases in woodlands and increases in urban areas for the same period. The use of satellite remote sensing data to observe urbanization trends in semi-arid catchments and to represent catchment land surface characteristics proved to be effective for rainfall-runoff modeling. Findings of this study are of relevance for many African cities, which are experiencing rapid urbanization but often lack planning and design.

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Variable source area modelling in urbanizing watersheds

Cited by 33 publications

References 9 publications

Land Use and Land Cover Effects on Runoff Processes: Urban and Suburban Development

Land Use and Land Cover Effects on Runoff Processes: Urban and Suburban Development

An approach for evaluating the hydrological effects of urbanization and its application

Hydrological Impacts of Urbanization of Two Catchments in Harare, Zimbabwe

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