Managed aquifer recharge (MAR): the relationship between surface water temperature in recharge basin and groundwater temperature - The case of the Rokugo alluvial fan, in northern Japan

Abstract

In this paper, the authors consider the relationship between surface water temperature in a basin of managed aquifer recharge (MAR) and the groundwater temperature in the case of the Rokugo alluvial fan, in northern Japan. The results show water temperature of basin No.2, installed in the center of the fan, has an influence on the shallow groundwater temperature at the observation well which is next to the basin. Under the condition of about 60L⁄sec water supply to basin No.2, water temperature inside basin No.2 does not have an influence on groundwater temperature at the Nonaka piezometer at depths of 20m and 50m which is 274m away from the center of the basin. This study is continued more in future, while increasing water supplies to the basin.