Assessment of groundwater suitability for agricultural utility in veeranam tank drainage basin, Tamilnadu, India.
Keywords:
Groundwater, Irrigation water quality, Salinity, Hydro geochemistry “Abstract
The suitability of groundwater quality for agricultural use was assessed in the veeranam tank drainage basin of cuddalore district, TamilNadu.(South India). In order to evaluate the quality of groundwater in the study area, a total of 24 groundwater samples were collected randomly from dug and deep bore wells both in the summer and winter season . The concentration of major ions and other geochemical parameters were analyzed.. The result showed the concentrations of these ions are above the permissible limits for irrigation purposes. The US Salinity diagram highlights that 75 % of the samples fall under high salinity hazard (C3S1) category in both seasons. It indicates that high salinity (C3) and low sodium (S1) are moderately suitable for irrigational purposes. According to Wilcox irrigation water classification 75% of total sample fall under good to permissible category and 21% under permissible to doubtful category