Effect of Aggregation of On-Site Storm-Water Control Devices in an Urban Catchment Model

Elliott, Alexander H.; Trowsdale, Sam; Wadhwa, Sanjay

doi:10.1061/(asce)he.1943-5584.0000064

Cited by 65 publications

(37 citation statements)

References 15 publications

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“…These studies include the Soil and Water Assessment Tool (SWAT) model (Tripathi et al, 2006;Muleta et al, 2007;Kumar and Merwade, 2009), MUSIC (Elliott et al, 2009), BTOPMC (Ao et al, 2003), the Storm Water Management Model (SWMM) (Ghosh and Hellweger, 2011), and the Hydrologic Modeling System (HEC-HMS) (Chen et al, 2011;Cleveland et al, 2009). These studies have investigated how watershed aggregation…”

Section: Introductionmentioning

confidence: 99%

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

Zhang

Wang

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. In this paper, we use the Hydrologic Modeling System (HEC-HMS) to simulate two flood events to investigate the effect of watershed subdivision in terms of performance, the calibrated parameter values, the description of hydrologic processes, and the subsequent interpretation of water balance components. We use Stage IV hourly NEXRAD precipitation as the meteorological input for ten model configurations with variable sub-basin sizes. Model parameters are automatically optimized to fit the observed data. The strategy is implemented in Clear Creek Watershed (CCW), which is located in the upper Mississippi River basin. Results show that most of the calibrated parameter values are sensitive to the basin partition scheme and that the relative relevance of physical processes, described by the model, change depending on watershed subdivision. In particular, our results show that parameters derived from different model implementations attribute losses in the system to completely different physical phenomena without a notable effect on the model's performance. Our work adds to the body of evidence demonstrating that automatically calibrated parameters in hydrological models can lead to an incorrect prescription of the internal dynamics of runoff production and transport. Furthermore, it demonstrates that model implementation adds a new dimension to the problem of non-uniqueness in hydrological models.

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Section: Introductionmentioning

confidence: 99%

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

Zhang

Wang

et al. 2013

Hydrol. Earth Syst. Sci.

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“…While it would be theoretically possible to delineate drainage areas (also referred to as catchments) and compute times of concentration for each catch basin in the watershed, this approach would be incredibly time consuming and most likely result in an unstable model. In a study by Elliott et al (2009), it was determined that aggregation of model elements did not significantly affect the model output in most cases. It was decided that the best approach would be to delineate the catchments to major points of interest within the network, such as detention ponds and intersections of primary conveyances.…”

Section: Model Developmentmentioning

confidence: 99%

Bioretention Hydrologic Performance in an Urban Stormwater Network

James

Dymond

2012

J. Hydrol. Eng.

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While many studies have evaluated the hydrologic effects of bioretention at the site level, few have investigated the role bioretention plays when distributed throughout a watershed. This study aims to assess bioretention's effects on an urbanized watershed using two modeled scenarios: one where runoff from many land uses was routed through the practice, and another in which only runoff from large impervious areas was routed. Peak flows, volumes, and lag times from these models were compared to the watershed's current and predeveloped conditions. Both scenarios provided reductions in peak flows with respect to existing conditions for modeled storm events, sometimes to levels below the predeveloped condition. Neither case was able to reduce volumes to predevelopment levels; the option to treat impervious areas had a negligible effect on runoff volume. Both cases were able to extend lag times from the existing development condition. Based on these results, bioretention appears to have the capability to improve watershed hydrologic characteristics. Furthermore, only treating impervious areas could be a viable alternative when funds or space are limiting factors.

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“…Scale effects and scaling in urban hydrology have been investigated by researchers -for example Gires et al (2013); Park et al (2008); Stephenson (1989); Elliott et al (2009);Wood et al (1988);Zhang and Montgomery (1994). This topic was also reviewed by Blöschl and Sivapalan (1995).…”

mentioning

confidence: 99%

Scale effect challenges in urban hydrology highlighted with a distributed hydrological model

Ichiba

Gires

Tchiguirinskaia

et al. 2018

Hydrol. Earth Syst. Sci.

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Abstract. Hydrological models are extensively used in urban water management, development and evaluation of future scenarios and research activities. There is a growing interest in the development of fully distributed and grid-based models. However, some complex questions related to scale effects are not yet fully understood and still remain open issues in urban hydrology. In this paper we propose a twostep investigation framework to illustrate the extent of scale effects in urban hydrology. First, fractal tools are used to highlight the scale dependence observed within distributed data input into urban hydrological models. Then an intensive multi-scale modelling work is carried out to understand scale effects on hydrological model performance. Investigations are conducted using a fully distributed and physically based model, Multi-Hydro, developed at Ecole des Ponts ParisTech. The model is implemented at 17 spatial resolutions ranging from 100 to 5 m. Results clearly exhibit scale effect challenges in urban hydrology modelling. The applicability of fractal concepts highlights the scale dependence observed within distributed data. Patterns of geophysical data change when the size of the observation pixel changes. The multi-scale modelling investigation confirms scale effects on hydrological model performance. Results are analysed over three ranges of scales identified in the fractal analysis and confirmed through modelling. This work also discusses some remaining issues in urban hydrology modelling related to the availability of high-quality data at high resolutions, and model numerical instabilities as well as the computation time requirements. The main findings of this paper enable a replacement of traditional methods of "model calibration" by innovative methods of "model resolution alteration" based on the spatial data variability and scaling of flows in urban hydrology.

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Effect of Aggregation of On-Site Storm-Water Control Devices in an Urban Catchment Model

Cited by 65 publications

References 15 publications

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

Bioretention Hydrologic Performance in an Urban Stormwater Network

Scale effect challenges in urban hydrology highlighted with a distributed hydrological model

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