irrigation water applied by surface water irrigation, irrigation water applied by groundwater irrigation, tanks and ponds, water conservation structures. Rain fall recharge is estimated by using rainfall infiltration factor method. GEC 97 methodologies are described the methodologies for estimation of the recharge from other sources (CGWB, 2009). Table 2 describes the gross groundwater recharge in the Yadalavagu sub-basin. The following formulas are used for the groundwater recharge.