Journal of Geology & Geophysics
Open Access
ISSN: 2381-8719
+44 1478 350008
ISSN: 2381-8719
+44 1478 350008
Girish Kumar Mayachar
Posters-Accepted Abstracts: J Geol Geosci
A geographical information system (GIS) was used for the integration of the vertical electrical soundings and hydrogeological data acquired using remote sensing to understand the groundwater potential in semiarid region. Detailed remote sensing studies have been carried out in Bakhar watershed area of 560 Km2 in Mirzapur district, U.P. in the northern part of India. This region exposes Kaimur series of Upper Vindhyan Super group and lithologically consists of Compact Sandstone overlain by Quaternary Sediments. Using Indian Remote Sensing - 1 D satellite LISS - III data, efforts have been made to generate geological, geomorphological and lineament maps. These maps combined with vertical electrical soundings data over 49 locations provide information about the spatial distribution of aquifer up to 70 meters of depth and also give subsurface lithological information. The resistivity soundings data show, resistivity of water bearing zones in the range 30 to 600 ohm. Using GIS tools, weights are given to different thematic maps depending on the influence of ground water recharge and further knowledge based ranks have been assigned to individual classes within a thematic map depending on its significance in storage and transmittance of groundwater. These were then multiplied by the thematic map weights to produce scores. Based on these scores, the watershed was categorized in to different groundwater potential zones. The results indicate that the eastern and northern parts of the study area have very good groundwater potential to meet the demands of water for irrigation and domestic purposes, whereas the southern region has poor groundwater potential zones. Further a management plan has been proposed for water harvesting sites as well as structures such as Check dams, Contour bunding, Recharge pits, Wells and Contour trenching for the sustainable development of groundwater in the region to eliminate water scarcity and its related problems.