Research on SCS-CN in Lanhe Basin Distributed Rainfall Runoff Event
Based on the data from Basin hydrology, weather, runoff, land use, soil, DEM and with ARCGIS9.0 and WMS7.0 applications, SCS small basin hydrological model can be applied in Lanhe basin Distributed Hydrological Model. Within each sub-unit, net rainfall can be calculated with SCS-CN, and conflux using SCS dimensionless unit hydrograph, while river network flow concentration using subsection Muskingum method. By conducting the simulation of distributed rainfall runoff where measured runoff value are selected from 20 historical flood, the results indicate there are 14 values that are effective and the ratio comes to 70 percent. And there are 11 effective values after conflux test to the 14 floods where the ratio comes to 80 percent. The process of calculating runoff matches well with actual measure which indicates that the Distributed Hydrological Model is a scientific and precise model and can be applied to basin water flood forecast and water resource management.
SCS-CN Lanhe Distributed Rainfall runoff
Mei Yang Xi Huan Sun
College of Water Science and Engineering, Tai Yuan University of Technology, Shan Xi, China
国际会议
上海
英文
1476-1479
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）