The character of the basin ranges from mountain terrain, with an elevation from 2,200 to 2,700 m a.s.l., Also the protected areas of Ghare Boulagh wetland. Sari Su wetland, Eshgh Abad wetland and Siah Baz wetland are located in the Iranian pan. Some 28% ofTurkey’s territory in the basin is cropland (20% of it irrigated).