In the advanced search section, we should choose start year for the title, number for the item and statistics should be based on total list and the status of the dam should be chosen with three steps. In the original file the total number for planned is 537, for under construction is 146, for operation is 647 and for the total is 1330 but the real numbers after calculation is 464 for planned, 144 for under construction, 598 for operation and for the total the number is 1206.

http://daminfo.wrm.ir/fa/dam/stats