Comparative study on the calculation methods of ecological base flow in a mountainous river

As the social economy is further developed, there have been increasingly severe ecological and environmental issues. For instance, rivers located in mountainous areas are often encountered with issue of zero flow. The base flow was put forward to ensure continuous rivers, realize minimum function, meet most fundamental requirements sustaining river ecosystem. Wulong River Basin Yantai City China taken as example here. Based on runoff data collected Tuanwang Hydrological Station from 1960 2016, measured restored natural sequence by adopting item-by-item investigation method. different flows were calculated Tennant Method, Q p90 Texas Base Flow Ratio Tessman Wetted Perimeter Method. research findings shown that Method proves be optimal approach for calculating River. analysis assurance degree flow, period April June lowest