water cascades over water level control weirs - part of the tank cascade system in central sri lanka near the town of dambulla

storage harvesting rain water central tank cascade system architecture stone river surface dam extant wewa irrigation outdoors flowing natural environment bridge tree supply flood control management sky travel landscape nature sunshine sunny reservoir kandalama dambulla sri lanka barrage pouring motion outdoor spillway overflow flow closeup weir fall countryside blue lake waterfall cascades level weirs town dambulla