4-Remote Sensing Applications for Groundwater Targeting.

Abstract

The growing demand on the fresh water resources has made it imperative to optimally use the groundwater, which in the Indian context is approximately 40% of the total fresh water resources of the country. This requires assessment of groundwater resources and watershed characteristics. The occurrence of groundwater depends upon the water holding capacity of rocks and its availability on the water yielding capacity of stratum (i.e. storage coefficient and specific yield). Groundwater targeting using remote sensing implies search of occurrence of groundwater and not its availability. Since groundwater occurs below the zone of aeration, the sensors cannot directly record groundwater occurrences, its targeting is indirect wherein we look for factors which control occurrence of groundwater.