69-Project Report on Study of Seawater Intrusion Using Isotope Analysis Along Karnataka Coast.

Abstract

Sea water intrusion is one of the important threats to water availability in the coastal zones. A study has already been done on the coast of Bengal, Orissa, and Andhra Pradesh. Surveys were conducted along the coast of Karnataka which included the 3 districts of Dakshina kannada, Udupi and parts of Uttara kannada, According to the complaint received it could be inferred that sea water intrusion is indeed a problem in Karnataka coast. The study is of vital importance as the population density along the coast is very high. Isotopes techniques are of at most importance in Karnataka as the water exists in the fractures of rocks (hard rock region). Isotopes study was extended to the coastal region as it was felt that this methodology would be able to identify the sea water as source of pollution and nothing else.