Landsat Falsle-Colour composites of 250,000 scale were used for evaluating the hydrogeologic conditions of Pambar River Sub-Basin.
The region studied is comprised of crystalline metamorphic rocks. Oval features and Lineaments suspected to be the potential
zones for ground water exploration were mapped from Landsat images. These areas were studied in detail using aerial photographs
of 1:60,000 scale followed by field checks. Integrating the geology, geomorphology, landuse and geophysical data a final hydrogeologic
conditions of the area was evaluated.
The study indicates that the oval features mapped from Landsat images are the structural basins. Though many wells are located
on the linear features, the yields of the wells are low due to mineralization. Against the general view that the sturcltural
basins will have good ground water potential, it is interesting to note that the basins located within Pambar River Sub-Basin
does not show good potential possibilities. The favourable geomorphic units such as buried channels, buried pediments, etc.,
are the only potential reservoirs available in this area.