///Hanjiashao Village is located in the north valley of 2# sub dam of Lijiayu Ash Field where the distance is 800 m far away from the village at Luanxian, Hebei Province. The groundwater table near the village goes up and groundwater quality changes badly during the ash field running. Two groundwater systems, which are perched water system and unconfined aquifer system are classified in the village area. The hydraulic conductivity of the unconfined aquifer is 172.6~203.4 m2/d. The infiltration area of the precipitation and ash water where is recharge area of the aquifer system is located in the south higher slope of the dam and ash field. The flow way of the ash water and its effects on groundwater are evaluated. The preferential flow zone with 200 m width occurs between the sub dam and the village. The new groundwater watershed appears after ash field running. The ash water infiltrates directly to weathered zone first at the ash field, and recharge to the unconfined fractured dolomite rock aquifer, in which water discharge to the porous aquifer where the wells are dug by residents of the village.
