상하류 유출특성을 고려한 수위관측망 평가

This study has evaluated the stream gauge network with the main emphasis on the methodology of optimal stream network which isconsidered the discharge characteristics between upstream and downstream. To evaluate the optimal stream gauge network, the representativeunit hydrograph which is considered the discharge characteristics between upstream and downstream is transferred intoprobability density function for application of the entropy concept. This study has been compared the case of considering dischargecharacteristics between upstream and downstream and the case of the conventional methodology of using empirical formula andapplied to the Chungju dam basin. Summarizing the results are as follows. It can be found that the large total information content isestimated at the case which is considered discharge characteristic between upstream and downstream more than the case which isapplied empirical formula even though the few stream gauge stations is selected. It means that the total information of selected streamgauge stations is represented well the discharge characteristic between upstream and downstream. The Chungju dam basin is found toneed at least 12 stream gauge stations, which was derived by considering the discharge characteristic between upstream and downstream.