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Hydrology 2019, 6(1), 28; https://doi.org/10.3390/hydrology6010028

Improving Urban Runoff in Multi-Basin Hydrological Simulation by the HYPE Model Using EEA Urban Atlas: A Case Study in the Sege River Basin, Sweden

1
Department of Civil and Environmental Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
2
Research Department, Swedish Meteorological and Hydrological Institute, SE-601 76 Norrköping, Sweden
*
Author to whom correspondence should be addressed.
Received: 6 February 2019 / Revised: 12 March 2019 / Accepted: 19 March 2019 / Published: 21 March 2019
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Abstract

In this study, the high-resolution polygonal land cover data of EEA Urban Atlas was applied for land-use characterization in the dynamic multi-basin hydrological model, HYPE. The objective of the study was to compare this dedicated urban land cover data in semi-distributed hydrological modelling with the widely used but less detailed EEA CORINE. The model was set up for a basin including a small town named Svedala in southern Sweden. In order to verify the ability of the HYPE model to reproduce the observed flow rate, the simulated flow rate was evaluated based on river flow time series, statistical indicators and flow duration curves. Flow rate simulated by the model based on Urban Atlas generally agreed better with observations of summer storm events than the CORINE-based model, especially when the daily rainfall amount was 10 mm/day or more, or the flow exceedance probability was 0.02 to 0.5. It suggests that the added value of the Urban Atlas model is higher for heavy-to-medium storm events dominated by direct runoff. To conclude, the effectiveness of the proposed approach, which aims at improving the accuracy of hydrological simulations in urbanized basins, was supported. View Full-Text
Keywords: rainfall-runoff modelling; land-use; imperviousness; Urban Atlas; HYPE model rainfall-runoff modelling; land-use; imperviousness; Urban Atlas; HYPE model
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Tanouchi, H.; Olsson, J.; Lindström, G.; Kawamura, A.; Amaguchi, H. Improving Urban Runoff in Multi-Basin Hydrological Simulation by the HYPE Model Using EEA Urban Atlas: A Case Study in the Sege River Basin, Sweden. Hydrology 2019, 6, 28.

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