LIAO Wei-hong 1, LEI Xiao-hui 1, JIANG Yun-zhong 1, WANG Yu-hui 1, 2

1. China Institute of Water Resource and Hydropower Research, Beijing 100038, China,
2. Donghua University, Shanghai 201620, China

Abstract: This paper introduces a distributed hydrological model system, MWEasyDHM, which consists of four main parts: (1) general GIS tool for hydrological analysis, (2) pre-processing module for modeling, 3) simulation module and (4) post-processing module. The general GIS tool for hydrological analysis has been developed on the basis of MapWindow GIS, which is open-source. This GIS tool also includes functions for other parts of this system. The pre-processing module is made up of three sub-modules: sub-module for hydrological analysis based on DEM, sub-module for model parameter calculation, and sub-module for interpolation of meteorological and rain data. The simulation module supplies the function of real-time simulation, i.e. results can be shown in accordance with simulations. The post-processing module includes two sub-modules: auto-calibration of parameters, and the display of simulation results. Overall, The MWEasyDHM has solved the problem for fast modeling and calibration of the EasyDHM model, and provides a good foundation for further development and applications of distributed hydrological simulations in large scales.

Key words: modeling system, GIS, EasyDHM, MapWindow

Published in: Journal of China Institute of Water Resources and Hydropower Research (Vol. 11 No. 1, 2013)