Assessment of hydrological impact by long term land cover change using WMS HEC-1 model in Gyueongan-cheon watershed

WMS HEC-1을 이용한 경안천 유역의 경년 수문변화 분석

1. The purpose of this study is to evaluate the hydrologic impact due to temporal land cover changes of Gyueongan-cheon watershed. 2. WMS(Watershed Modeling System) HEC-1 was adopted and the required data such as DEM(Digital Elevation Model), stream network, soil map were prepared, and land cover map was made by using Landsat TM data. 3. Due to the increase of urban area and paddy field, the runoff ratio increased 5.8% during the past decade.