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Karnatak University (2016)

HYDROGEOLOGICAL STUDIES WITH REFERENCE TO GROUNDWATER QUALITY CHARACTERIZATION IN MARKANDEYA RIVER SUB BASIN BELGAUM DISTRICT KARNATAKA ST

Talwar Sampattkumar

Titre : HYDROGEOLOGICAL STUDIES WITH REFERENCE TO GROUNDWATER QUALITY CHARACTERIZATION IN MARKANDEYA RIVER SUB BASIN BELGAUM DISTRICT KARNATAKA ST

Auteur : Talwar Sampattkumar

Université de soutenance : Karnatak University

Grade : Doctor of Philosophy (PhD) 2016

Résumé partiel
The increasing demand of water in all the sectors calls for the sustainable management of water resources. Groundwater, one of the major sources of water in several countries, needs to be managed efficiently so as to sustain the large scale abstraction for drinking, agriculture, horticulture and industrial needs. At the time of independence, the gross irrigation potential was 19.5 million hectares and it had increased to about 95 million hectares by the end of the year 1999-2000 (Central Groundwater Board 2002). Further development of substantial order is necessary if the food and fiber needs of our growing population are to be met with. In India, groundwater resources development occupies a key place in the irrigation sector because of its role in stabilizing Indian agriculture. Dependence on groundwater in India has recently increased due to intense usage of high-yielding varieties of crops and adoption of multicropping pattern, both of which require a timely assured water supply. This reliability on groundwater as the most dependable source for irrigation has led to it’s over exploitation in most parts of the country in both hard rock terrains and alluvial areas (Naik and Awosthi 2003). The study area, Markandeya River Sub-Basin (MRSB), is located majorly in Belgaum taluka and some part of Gokak taluka, Belgaum District, Karnataka State, India. The area lies between the latitudes15° 45’ and 16° 15’ N and longitudes 74° 15’ and 74° 50’ E. The study area is covered under survey of India topo sheet numbers 47 L/12,47 L/16,48 I/5 and 48 I/9. Markandeya River, one of the tributaries of River Ghataprabha, originates at Bailur village and flows at a length of 66 km, before joining the Ghataprabha River near Gokak. MRSB forms part of a semi-arid belt and agro-climatically, it is a part of Belgaum district, a northern dry region of Karnataka State (Figure : 1.1). Physiographically, the area exhibits relatively flat with gentle slopes covering major portion of the area with moderately undulating central and hilly northern part. Geologically the area comprises of Archaean, Proterozoic and Phanerozoic rocks. Rock formations of MRSB are mainly basalts and sandstones covering major portions of the study area with the moderate patches of laterite and gneiss.

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