Lake Paiku

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Lake Paiku
From space, May 1997. North is down.
LocationTibet Autonomous Region
   Shigatse Prefecture
      Gyirong County and Nyalam County
Coordinates28°55′N 85°35′E / 28.917°N 85.583°E / 28.917; 85.583Coordinates: 28°55′N 85°35′E / 28.917°N 85.583°E / 28.917; 85.583
Primary outflowsNone (endorheic).
Max. length27 km (17 mi)
Surface elevation4,591 m (15,070 ft)

Lake Paiku (or Peiku, Tibetan: Paiku-Tso or -Tsho) is a lake at 4,591 meters (15,062 ft) elevation on the Tibetan Plateau at 28°55′N 85°35′E / 28.917°N 85.583°E / 28.917; 85.583, 18 kilometers (11 mi) south of the Yarlung Tsangpo (Brahmaputra) River. The lake is 27 kilometers (17 mi) long and 6 kilometers (3.7 mi) wide at its narrowest. It is surrounded by mountains reaching 5,700 to 6,000 meters (18,700 to 19,700 ft). Streams fed by glaciers cascade to the valley floor, but most sink into alluvial deposits before reaching the lake.

The surrounding catchment is an endorheic basin with no outlet. It would overflow into the Yarlung Tsangpo with a water level about 100 meters (330 ft) higher. The lake's brackish water is evidence that it has not overflowed in hundreds if not thousands of years.