Groundwater prospects analysis through hydrogeophysical parameters and hydrogeomorphic zonation - a case study in parts of Kewta watershed - upper Barakar basin - Bihar
The study integrates hydrogeomorphic and hydrogeophysical approach for groundwater exploration for Kewta watershed, upper Barakar basin, Bihar

 In this paper from the GIS Development site present study, hydrogeomorphic zonation has been carried out through remote sensing technique. The study area is parts of 'Kewta watershed' of Koderma (lower Hazaribagh) plateau. It is located in between the latitude 240 09' - 240 13' and longitude 850 20' - 850 28'.

The hydrogeophysical characteristics of the aquifers have been analysed with the help of vertical electrical sounding. The study deals with an integrated approach for groundwater exploration. The results of hydrogeomorphic and hydrogeophysical approach have been correlated and outcomes have been highlighted in the paper.

The analysis indicates that each hydrogeomorphic zone can be further divided on the basis of hydrogeophysical parameters. Numerous depressions (sub-surface basin) on basement surface have been identified with the help of Digital Basement Terrain Modeling (DBTM). These depressions play an important role in understanding the aquifer storage and retrieval.

However, these features have not been resolved as a separate identity in hydrogeomorphic zonation. The hydrogeomorphic zonation coupled with hydrogeophysical parameters has given better understanding of groundwater storage and retrieval. Integrated approach has also increased the authenticity of ground water prospects determination. Analysis of deep buried pediplain shows that the top layer (10 m) consists of silt and clay (may be depositional) and principal aquifer material i.e. weathered horizon is lying below the depositional material. This has an important bearing in planning utilisation and development of groundwater.


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