Abstract

The flat V-weir is a useful flow-measuring tool to get a quantitative relationship between forest change and discharge variation of river which could help to make out the accurate situation of water balance in catchment scale. It is powerful in flow-measuring with high precision and has been widely used in forest hydrology research. The application and detail design of the flat V-weir has been discussed in this paper which takes the Xiangshuixi forest catchment as a case study. The principles of site selection and design of flat V-weir have been put forward in this paper. Finally the specific size of the flat V-weir has been described in details.

Keywords: Flat V-weir, forest hydrology, Three Gorges resevior area