The study area of Degana block lies in the central part of the Nagaur district of Rajasthan, India. Older alluvium is a
principal source of groundwater in Degana block. Tertiary sandstone and Nagaur sandstone are other important aquifers occur
in Degana block. Groundwater quality and depth of water varies considerably in Degana block. Excess amount of Fluoride in
groundwater (>1.5 mg /lit) causes dental and skeletal fluorosis. Granites, Gneisses and Pegmatites occurs in the surrounding
area are major possible source of fluoride in groundwater. Overexploitation of groundwater resources in the block has resulted
in water level depletion and Groundwater recharge is limited in the study area. Therefore the study area is recommended for
adoption of adequate measures for conservation and judicious management of available groundwater resources.
