Estimation of Groundwater Recharge of the Holocen Aquifer from Rainfall by RIB Method for Hưng Yên Province
Nguyễn, Đức Rỡi Estimation of groundwater recharge from rainfall is a key factor for determining groundwater resources in water development and management. The paper presents application of rainfall infiltration breakthrough (RIB) model method for groundwater Holocene aquifer recharge estimation for Hưng Yên province in the Red RiverDelta,Vietnam. Although monitoring Holocene aquifer water level (WL) data are from different hydrogelogical either nearly naturally undisturbed or groundwater disturbed abstraction conditions, the relationship between the groundwater level fluctuation and cumulative rainfall departure is of a good match. The groundwater monitoring wells of the national monitoring network have been used are QT119, QT129 and QT130. The fractions of cumulative rainfall departure are from 13% for monitoring well QT119, and 12%-16% for wells QT129 and QT130. For the basic case of specifice yield of 0.1, the rainfall recharge rates are from 427mm (34.1% of mean ann...