Tarbela Dam topographic map
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About this map
Name: Tarbela Dam topographic map, elevation, terrain.
Average elevation: 451 m
Minimum elevation: 333 m
Maximum elevation: 760 m
Tarbela Reservoir is 80.5 kilometres (50.0 mi) long, with a surface area of 250 square kilometres (97 sq mi). The reservoir initially stored 11,600,000 acre-feet (14.3 km3) of water, with a live storage of 9,700,000 acre-feet (12.0 km3), though this figure has been reduced over the subsequent 35 years of operation to 6,800,000 acre-feet (8.4 km3) due to silting. The maximum elevation of the reservoir is 1,550 ft (470 m) above MSL and the minimum operating elevation is 1,392 ft (424 m) above MSL. The catchment area upriver of the Tarbela Dam is spread over 168,000 square kilometres (65,000 sq mi) of land largely supplemented by snow and glacier melt from the southern slopes of the Himalayas. There are two main Indus River tributaries upstream of the Tarbela Dam. These are the Shyok River, joining near Skardu, and the Siran River near Tarbela.