HYDRO-GEOCHEMICAL ANALYSIS OF MEWAT (NUH) DISTRICT, HARYANA

Abstract

Present study was carried out for Mewat district, Haryana which lies between 27⁰39′ to 28⁰ 20′ North latitude and 76⁰31′ to 77⁰20′ East longitude, covering an area of 1484 km². The major problems arise in the study area are related to depleting water level and increasing salinity in groundwater. The study focused on three different parts (i) spatial and temporal variation of groundwater level (ii) salinity analysis using the TDS value of the collected water samples (iii) Hydrochemical characterization of groundwater of Mewat. Groundwater table and TDS data were collected from 36 different wells located in study area for both pre and post monsoon periods. For hydrochemical characterization of groundwater, 12 representative water samples were collected from 12 locations and analysed for various physico-chemical parameters viz pH, EC, cations, anions for March, May and November, 2016. From the study, it was found that water level decreased from the year 2011 to 2015 in Mewat region. This was due to the over exploitation of groundwater. Out of 36 wells 2 wells were observed TDS value above 7000 ppm. Mean EC of the samples was beyond the WHO guidelines. Mean nitrate value was found within permissible limit of WHO guidelines. In ion Vs TDS plot it was found that sulphate and chloride were dominant anions while sodium was dominant cation. In pre monsoon the water was Mg-Cl-SO4 type and in post monsoon Ca-SO4-Cl- type. It will be a better study to aware the localities whether the water is suitable for irrigation or not on different hazard basis. Based on salinity hazard, during pre-monsoon 7 samples were under doubtful and 5 were under unsuitable category. The study will assist in decision making and planning of industrial location and sustainable water resources development in the water scarcity and problematic areas and to suggest remedial measures in salinity affected areas of the district.