Analysis of changes of relationship between water level and discharge and its causes at the tail of Fuhe River in recent 70 years

摘要

Based on the measured day-averaged water level and discharge data of the tail reach of Fuhe River, the changes of hydrological situation in recent 70 years was analysed in this paper. The results show that the relationship between the water level and discharge at the tail of Fuhe River has been greatly changed, and the water level at the same discharge was significantly reduced. These changed were not related to the runoff changes, but mainly affected by the changes of river bed and downstream boundary water level.