IJAR - Indian Journal of Applied Research

R. Kannan; S. Venkateswaran

Volume : VI, Issue : II, February - 2016

GEOSPATIAL AND TEMPORAL VARIATIONS OF GROUNDWATER LEVEL IN THE NAGAVATHI WATERSHED, CAUVERY RIVER DHARMAPURI DISTRICT, TAMIL NADU

R. Kannan, S. Venkateswaran

Abstract :

Groundwater and water resources management plays a key role in conserving the sustainable conditions in semi–arid region. Nagavati watershed is located in part of Dharmapuri district of Tamil Nadu. It lies between latitudes 11°45’N to 12°15’ N and 77°30’ E to 78°30 E longitudes. Nagavathi is a major river which is ephemeral stream flowing from northeast to southwest direction and has 32 km length and surrounded by west part Masakkallu reserve forest, eastern part Thamboran malai and central part Elagiri reserve forest in the south west by Mettur Stanley reservoir. The Dharmapuri district receives average annual precipitation ranging from 760 to 910 mm. Geospatial and temporal analysis of seasonal (Pre monsoon, Post Monsoon, Southwest and Northeast monsoon) groundwater level fluctuations of 5 wells monitored during 10 (2003–2014) years was carried out. The groundwater level data were classified depth of water level and it is used for interpolation study in GIS environment for the winter, summer, southwest, northeast and average annual monsoon season water level thematic maps were generated. In thematic maps the depth of water level was categorized into shallow depth of water level, medium depth of water level and high depth to water level.