1. 15. AREA AND OVERLAND FLOW COEFFICIENT OF MAIN BASINS

Main basin	Area (1000 sq km)	Coefficient of overland flow, 33-year average (1347-1380) ( %)
Total ..............................................	1623	23.4
Caspian Sea ........................................	175	25.8
Persian Gulf and Oman Sea..................	426	31.8
Lake Orumiyeh ...................................	52	33.0
Markazi ..............................................	823	10.6
Hamun ...............................................	103	17.4
Sarakhs ..............................................	44	35.5

Source: Ministry of Energy .