The performances of semi-distributed modelling in urban drainage: the trade-off between calibration on hydrological measurement and the inclusion of GIS data. - École des Ponts ParisTech Access content directly
Conference Papers Year : 2013

The performances of semi-distributed modelling in urban drainage: the trade-off between calibration on hydrological measurement and the inclusion of GIS data.

Abstract

Nowadays, high resolution geographical data are widely available for research and operational purposes. The inclusion of these data into hydrological models may suggest a direct and clear improvement of their performances. Different configurations and model structures, including an increasing quantity of geographical information, are tested using the widely used SWMM5 model on a 2.5km2 pilot catchment (located in Sucy en Brie, close to Paris, France). The Nash-Sutcliffe criterion is used to estimate the goodness of the calibration. If including some basic spatial information on landuse clearly improves the performance of the uncalibrated model, the increase in performance is less obvious if the user continues to refine geographical information on the catchment. Moreover, model predictions are comparable between a model calibrated with an efficient calibration procedure and a more physical approach including a fine spatial description and no calibration. Finally, the quality of data used for calibration and validation seems to be a key parameter to obtain a good fit between measurements and model predictions.
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Dates and versions

hal-00870653 , version 1 (07-10-2013)

Identifiers

  • HAL Id : hal-00870653 , version 1

Cite

Céline Bonhomme, Guido Petrucci. The performances of semi-distributed modelling in urban drainage: the trade-off between calibration on hydrological measurement and the inclusion of GIS data.. Sewer Processes and Network, Aug 2013, Sheffield, United Kingdom. pp.SPN7. ⟨hal-00870653⟩
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