Geo-electrical Investigation on Sub-surface Configuration and Groundwater Salinity in Indira Gandhi Canal Command, Western Rajasthan

Abstract

Knowledge of sub-surface configuration and studies on perched water salinity are important for efficient water management decisions in Indira Gandhi Canal Command,western Rajasthan. Results of geo-electrical investigations carried out at the Lunkaransar State Agricultural Farm in the IG Canal Command,indicated that gypsiferous layer is responsible for the occurrence of perched water varied from 2 to 26m in thickness.Highly saline water is encountered beneath it in confined conditions.Salinity levels of the perched water was found to be governed partly by thc nature of soil sand partly by the subsurface flow of excess irrigation water.