N. Prabhakaran, N. Mahendran, S. Radha, B.Gurugnanam and S. Mahendran
Abstract
Hydrogeochemical investigation of the groundwater samples from Bhavani taulk of Erode district in Tamilnadu was carried out. The Study area lies between East longitude 77deg. 25 27" to 77deg.46 58" and North Latitude 11deg.2118" to 12deg.00. The total study area covered by 1495.02 Km2, in which the plain area occupies 640.43 Km2 and forest, covers an area of 854.59 Km2. The ground water condition of the taulk is semi critical 70 and 90%. The twenty five samples were collected from plain area during (May) Premonsoon 2006. The samples were collected in bore wells, open well and these wells are constantly used by the people. The groundwater is fit for drinking purposes except in few locations were TDS, Ca, K, SO4, and Cl are above the WHO limiting value. Spatially higher TDS concentration occupies an area of 145 Km2. There is no sodium hazard for irrigation but medium to high salinity affect the irrigation. The favorable zone for irrigation is 130.26 Km2.