1-Water Balance Study and Conjuctive Water Use Planning in Irrigation Canal Command Area - A Remote Sensing Perspective.

Abstract

Water budgeting of the D-36 and D-36A distributaries confined between Peddavagu, Korutla Vagu and Kakatiya main canal of SriRam Sagar Project Command area was conducted using remote sensing derived crop areas, landuse/landcover, irrigation tank inventory, source-wise irrigated areas, etc., together with the conventional meteorological, canal flow and well inventory data. Recharge and water balance in the study area indicate that the net recharge to aquifer is negative to the tune of 254 ha. m. resulting in fall of ground water table by 0.79 m during 1992-93. However, normalised groundwater recharge and water balance estimates indicate an impending water logging problem with an annual ground water table rise of 0.35 m. In view of existing water management practices, a conjunctive water use plan of rotational utilization of groundwater and canal water is suggested.