Rainwater collection tank - This is an artificial water reservoir constructed across a slope to collect and store rain water by taking advantage of local mounds and depressions.  The main purpose of this tank is for recharging ground water and also act as emergency reservoir for cattle. The size of the tank is appx. 40x50 (2000 sqft). At the deep end its about 10 ft tapering off to 2 ft at the shallow end. The rainwater runoff enter the tank thru' the shallow end. A small qty of soil was excavated at the deep end (about 6 ft) and has been used to make a check dam.