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Precipitation–runoff simulation in **ushui river basin using HEC–HMS hydrological model

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Abstract

Shenyang in Liaoning Province, is an important industrial city in China, contributing to the development of the economy. Recently, Shenyang has experienced degradation of forests and grasslands, and water shortages leading to ecological dysfunction of urban water bodies, which in turn influence floods. This study combined remote sensing (RS) and geographic information system (GIS) technologies to analyze land use change trends in Shenyang from 2005 to 2018. Then, the HEC–HMS hydrological model was applied to forecast flood characteristics parameters, such as flood peak flow and peak present time for multiple floods in the basin, taking the **ushui river basin as an example, to provide values for achieving advance flood forecasting. The results showed that (1) all land categories in Shenyang had interconverted to different degrees; (2) the spatial and temporal distribution of annual precipitation in Shenyang varied significantly, showing an overall increasing and decreasing trend in the southeast and northwest, respectively; (3) the NASH coefficients of eight flood simulations ranged from 0.704 to 0.992 and the simulation accuracy has reached Grade B, indicating that the HEC–HMS model had good simulation results in the **ushui river basin, which could guide advance flood forecasting in this area.

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The data supporting this study's findings are available from the corresponding author, on request.

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Correspondence to Ai-Hua Cao.

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Ren, DF., Cao, AH. Precipitation–runoff simulation in **ushui river basin using HEC–HMS hydrological model. Model. Earth Syst. Environ. 9, 2845–2856 (2023). https://doi.org/10.1007/s40808-022-01679-x

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  • DOI: https://doi.org/10.1007/s40808-022-01679-x

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