5.52 Older alluvial plain/low lying depressional areas: Seasonal 
inundation/water logging is the problem in low lying depressional 
areas. It is composed of silt, fine to coarse sand and clay. A layer 
of lime nodules (kankars) was observed in this unit at a depth of 
6 to 9 meters. Kankar-clay and sand and kankar, form good 
aquifers. Ground water movement stagnation was observed at 
places creating local ground water quality problems. EC in such 
areas varies from 4000 to 6000 micromhos/cms. Water level 
varies from 4 to 15 meeters. Except these low lying depressional 
areas, this zone is very good from ground water point of view. 
6. CONCLUSIONS 
From the above study it is concluded that remote sensing and GIS 
can be effectively utilized for delineating ground water prospective 
areas. Various ground water worthy features can be easily picked 
up from the satellite imagery and aerial photographs. Further 
ground water prospection is recommended along paleochannels/ 
channel remnants in a controlled manner, whereas valley fills are 
suitable for dug wells/shallow tubewells. Sites of the tubewells 
should be so chosen that they should fall on the extension of 
lineaments or preferably on their inter section. Proper drainage 
network should be provided in low lying depressional areas to 
avoid quality problem. 
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