A GIS BASED APPROACH TO ASSESS GROUNDWATER QUALITY IN KURNOOL DISTRICT
Keywords:
Ground water, Physico-chemical parameters, Inverse distance weightage, Water quality Index, Query Builder.Abstract
Water is essential for survival of mankind on the surface of the Earth. The surface water bodies which act as a source of drinking water are prone to pollution by industrial wastes in the current days. As a result people rely on groundwater sources for drinking, irrigation etc., It has become a necessity to evaluate quality of ground water as it is being polluted to a large extent because of rapid urbanization and industrialization. The present study aims to assess quality of groundwater in Kurnool district. The samples are collected at various well locations and are studied for physicochemical parameters like electrical conductivity, H+ ion concentration, bi carbonate, carbonates, sulphates, and chloride concentration. Thematic maps for each physico-chemical parameter is prepared by Inverse distance weightage interpolation method of Geographical Information system (GIS). The assessment of ground water quality is performed by water quality index, which expresses overall quality at a location. Based on the results potential zones are identified by query builder in ArcGIS.
