Geology Reference
In-Depth Information
parameter. There is no standard scale for a simple weighted overlay method.
For this purpose, criteria for the analysis should be defined and each parameter
should be assigned importance (Saraf and Chowdhury, 1998).
RESULTS AND DISCUSSION
Groundwater occurrence is influenced by the climate, physiography, drainage
and geology of the area. Geomorphological mapping allows an improved
understanding of watershed management, groundwater exploration, land use/
land cover planning etc. Analysis of remotely sensed data along with Survey
of India topographical map, collateral information and limited ground checks
help in establishing the baseline information for groundwater targeting of the
area. Furthermore Remote Sensing techniques are efficient means of obtaining
land use/land cover information more accurately at a faster rate with less
manpower and with greater cost efficiency. Measurement of land cover based
on information obtained from satellite imagery can also be greatly expedited
through computer analysis.
The main advantages in using remote sensing techniques for groundwater
exploration are: quick and inexpensive way of getting information on the
occurrence of groundwater, aids to select promising areas for further
groundwater exploration thus reducing field work and provides information
on prospects in one map. This type of information is very helpful in the
areas where more emphasis is on groundwater for the irrigation and drinking
purposes.
REFERENCES
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