Aquifer vulnerability to saltwater intrusion in the Coastal Karnataka

Lathashri, U A and Mahesha, A (2007) Aquifer vulnerability to saltwater intrusion in the Coastal Karnataka. In: National Conference on Harbour & Ocean Engineering, 12-14 Dec. 2007, NITK Surthkal.

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The coastal aquifers constitute important sources of freshwater. Many Indian coastal areas are heavily urbanized, a fact that makes the need for freshwater even more acute. There has been no methodology for evaluating the spatial distribution of the saltwater intrusion which essentially takes into account hydro-geological factors. It is therefore necessary to adopt a mapping system that is simple to apply using the data generally available and yet capable of making best use of those data in a technically valid and useful way. In the present study, the GALDIT index is used to assess the vulnerability of the aquifer to saltwater intrusion in the Pavanje and Gurpur basins of D.K. district, Karnataka. The index is developed based on the most important factors controlling saltwater intrusion. The wells selected for the investigation includes open wells and ponds. The GALDIT Index is obtained by computing the individual indicator scores and summing them up for a given location at a given time. Once the GALDIT index has been computed, it is possible to identify areas that are more likely to be susceptible to saltwater intrusion than other areas. Higher the index, greater is the saltwater intrusion potential.

Item Type: Conference or Workshop Item (Paper)
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 13 Oct 2016 15:06
Last Modified: 13 Oct 2016 15:06

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