Study on suitability of groundwater for irrigation purpose in Parambikulam Aliyar project area, India

Abstract

Forty samples were taken within the study area and analyzed for various physico-chemical parameters. Observed values of the Hydrochemical parameters of the samples were further analyzed for the groundwater quality assessment based on the Irrigation Standards. Suitability of groundwater was assessed for irrigation suitability based on the parameters pH, TDS, TH, PI , MR, KI, RSC , SAR, Na%, EC, Ca²⁺, Mg²⁺, Na⁺, K⁺, and like HCO₃^-, CO₃^2-, Cl^-, NO₂^-+NO₃^- and SO₄^2-. Karl Pearson’s correlation method was used to find out the relationship between these variables. Major hydro chemical facies were identified using Piper trilinear diagram. Results revealed that there are significant positive and negative correlations between the variables. EC has significant positive correlations between Mg²⁺, Na⁺, Cl^- and TDS.