Storm Runoff Simulation in Xizi Watershed of the Jinjiang Basin Based on HEC-HMS Model
In this study, a spatially distributed hydrologic model, HEC-HMS, was examined for its applicability in the Xixi watershed, a 1,259 km2 drainage basin in southeast China. The Soil Conservation Service (SCS)Curve Number method, the SCS Unit Hydrograph method and the Exponential Recession method were selected for the runoff volume computation, direction runoff computation and base flow computation, respectively. The Muskingum method was applied to flow routing. Eight storm records were used for model calibration and validation. Five evaluation criteria including the Nash-Sutcliffe coefficient of efficiency (Ens), the error in peak discharge (REp), the error in volumes (REv), absolute error of the time to peak (△T) and corresponding efficiency R were selected for the assessment of model performance. The results show that the simulated flow agrees well with the observed flow at the Anxi station, the outlet of the Xixi Watershed, and the resulting efficiencies are higher in single-peaked hydrographs than that in multiple-peaked ones.
HEC - HMS Model storm runoff distributed model Xizi Watershed
Lin Feng Chen Xingwei
School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
国际会议
郑州
英文
1496-1501
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）