TN-47 : Long term prediction of ground water regime in an internal draining basin

Abstract

An internally draining basin is one which is entirely without well defined natural streams or artificial surface drain. An example is the internal basins occupying the western Haryana and north eastern Rajasthan with a constrained outlet to the western part of the Ghaggar Basin in the vicinity of Sirsa. Introduction of surface water irrigation in an internally draining basin changes the groundwater balance of the area which may lead to water logging and soil salinization. Any action which reduces deep percolation slows down the rate of water table rise. These actions are canal and channel lining, improved water application systems, improved water management at farm level and afforestation.

In the present study different methods to evaluate the efficiency of each of the actions in controlling water table rise in an internally draining basin have been reviewed. Different methods of solving groundwater problem are also discussed in detail.