The purpose of this study is to predict the expected effect on Namdaecheon and the possibility of resumption of power generation when the power generation discharge water of the Doam Dam is used in consideration of the current situation of Doam Dam and Namdaecheon.
In this study, in order to confirm the topography and terrain, analyze distribution of area by elevation in the Songcheon watershed and classify watershed characteristics and river characteristics.
As a result, in the Songcheon watershed, the slope direction distribution was evenly distributed at 8%-14% throughout the watershed, and the northeast direction and the southwest direction accounted for a relatively large proportion of the slope direction. It was found that flat land occupied 6.34% of the entire watershed.
In the case of the Tank model, it was judged to have high applicability as reflecting the increase in runoff due to snow melting in spring and winter. The Kajiyama formula has a lot of disagreement on the suitability of the applied variables (f, K, E), so the result of the tank model was adopted for the runoff in this study.