Calculation of Annual Precipitation Recharge Coefficient Based on Improved Dynamic Water Level Method
It is important to accurately calculate precipitation recharge coefficients for water evaluation. The dynamic water level method is widely used in calculation of precipitation recharge coefficients because of its convenient operation, low cost and high precision. Due to that the tradi-tional dynamic water level methods usually take single precipitation recharge progress as calculation bases and ignore the problem of groundwater exertion and recharge lag, however, there is some calculating deviation. According to water balance, this paper put forward an improved dynamic water level method by changing multiple precipitation processes within a year into an integrated long-term precipitation to solve the above prob-lem. Taking the Daniuzhuang Village in Jinniu Town of Cangzhou City as a study case, the traditional and improved methods were compared. The results show that the deviation of precipitation recharge coefficient from the improved method is less than that from the traditional method.
coefficient of precipitation rechargedynamic water level methodgroundwater discharge curve
NETL
NSTL
万方数据
维普
