Spatial mapping of groundwater quality using GIS for Jakham River basin of Southern Rajasthan

Abstract

The physico-chemical analysis of groundwater quality plays a significant role to manage the water resources for drinking as well as irrigation in the sub-humid and semi-arid agro-climatic areas. In this study, the hydrogeochemical analyses and spatial mapping of groundwater quality in the Jakham River Basin located in the southern part of Rajasthan were investigated.The groundwater quality samples were collected from 76 wells marked on the grid map of 5×5 km2 area.A spatial distribution in sampling location in the basin was prepared using GIS (Geographical information system) tool based on 6 physico-chemical parameters i.e., pH, EC, TDS, Cl, NO3and F.The groundwater quality data from the pre and post-monsoon seasons of 2019-20 were used to carry out a detailed analysis of water quality parameters.The water quality maps for the entire basin have been generated using anIDW interpolation technique for these parameters as per the identified location.The higher value of TDS and EC were found in the south-eastern part and along the roadside of study area, which were dominated by agriculture activities and industrial influence. The concentration was observed higher in the post-monsoon period. For EC and TDS, major part of the (>50%) of the study area comes under the safe limit of potable water. Major part of the basin witnessed fluoride concentration (0.40-80 mg/l) for both the season, which is lower than the permissible limit. Higher NO3 concentration was observed after the rainy season. The influence of geogenic activities could be clearly seen in the groundwater quality of the basin. Theresultant map shows that the entire basin has optimally goodgroundwater quality for human consumption. Hence, this study provides suggestion to prepare strategies for the proper management and augmentation of the groundwater condition in the Jakham River Basin.

Identification of origin and runoff of karst groundwater in the glacial lake area of the Jinsha River fault zone, China

“…Hence, the flow peaks brought by precipitation events arrive at the springs at different times, and the superposition effect of spring flow peaks and troughs leads to an overall small fluctuation of spring flow. Compared with the Jakham River basin 45 , Niangziguan karst area 2 , Heilongdong spring basin 46 , and other areas, the catchment area of the karst water in the study area is not large; therefore, the first reason has greater plausibility.…”

"Integrated Geospatial Solutions for Enhanced Kukadi River Basin Delineation using Remote Sensing and GIS Techniques"

“…Geographical Extent: The study region encompasses the drainage area of the Kukadi River and its tributaries. Combination of the satellite imagery data and hydrogeological spatial analysis in geospatial environment is made easy to recognize and differentiate the drainage region (Gautam et al, 2021). According to Kang (2008), a flow direction raster shows the direction water which is flow out from each cell of a filled elevation raster.…”

Charectarization of Groundwater Level Zones Using Innovative Trend & Regression Analysis: Case Study at Rechna Doab-pakistan

“…The tendency of occurrence of variation of groundwater level over time was monitored by (Gautam et al, 2022) at Jakham river basin of south Rajasthan in India, where statistical approach provided to monitor the water level during 2009-2019, it was concluded that groundwater level was found 15% decrease in trend during pre-Monsoon and very low percentage decrease was observed during post-Monsoon. Similarly ITA was applied by (Swain et al, 2022) in Jharkhand (India) to observe the uctuations of groundwater level, where it was concluded that ITA has precise tendency to generate the trend in shorter time series without restrictive assumptions, it evaluated the trends signi cantly at increasing rate for 17 sites during pre-Monsoon, and increasing trend at 14 sites during post-Monsoon period.…”