Abstract
Groundwater forms very little quantity when compared to the total water available on the earth. Therefore it is very vital for all living beings especially for human beings. Visakhapatnam, one of the fastest growing industrial city, is situated on the East Coast of India between longitudes E83o11’ 30” and 83o 22’ 16” and latitudes. N170 39’ 16” and 170 45’ 58”. The present study is aimed to evaluate the groundwater occurrence using Remote sensing and GIS. Remote sensing data interpretation of visual and digital images gave the immediate information about surface features. From this information the groundwater potential zones are identified. The present study used IRS-IC (March 99) and ID (November 99) LISS-III digital data for comparative land use and land cover categorization and hydrogeomorphological features identification and lineament study. The layers created from Remote sensing data and available ancillary data for index overlay operations for identification of groundwater potential zones in the study area using GIS.
Highlights
The conventional hydrogeological maps prepared mainly based on groundwater hydrogeological survey provide geological formation wise
In this study the groundwater potential zones have been identified in Visakhapatnam urban and industrial area
Based on the field data and remote sensing inputs a resultant map is prepared in GIS environment
Summary
The conventional hydrogeological maps prepared mainly based on groundwater hydrogeological survey provide geological formation wise. The groundwater conditions vary significantly depending up on the Geology, geomorphology, geological structures ( lineaments), slope, drainage & canals and surface water bodies of the area. Water is absorbed by the earth surface, and it comes back on to the surface through the earth’s strata. Ground water conditions at a given site are unique and not uniform. With the help of factor wise analysis, integration and interpretation, the problem can be got over to some extent. An attempt has made to solve this problem using GIS (index-overlay analysis) techniques. The present study area lies in between longitudes E830 11’30” and 830 22’16 and lat. N170 39’ 16” and N170 45’ 58” Fig.
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