<prompt> What is meant by Catchment area?The area draining into the reservoirThe area draining into riversThe area draining into tanksThe area draining into sea water  <response>: IMPOUNDING RESERVOIRS- These are aificial lakes constructed usually of eahwork or masonry in which large quantities of surface water is stored. Dams built across rivers and mountain streams also provide large reserves of surface water. The area draining into the reservoir is called Catchment area. 