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Lake Profile

Har Us (Harnuur, Black Water Lake)

General Information

Description Lake Har Us is the second largest freshwater lake in Mongolia.
Country Mongolia
Latitude 48° 0' 0" (48.0000)
Longitude 92° 10' 0" (92.1667)

Physical Characteristics

Surface Area 1,400.00 km2
Type Fresh


Economic Value
Major Cities

Watershed Management


Biodiversity Conservation

Designations Ramsar Site
Ramsar Site Name Har Us Nuur National Park
Ramsar Designations 1, 2, 3, 4, 5, 6, 7
Species of Concern



Biodiversity Conservation of the World's Lakes: A Preliminary Framework for Identifying Priorities
Crop Explorer - Global Reservoir and Lake Elevation Monitoring
Crop Explorer - Lake Level Variations from TOPEX/POSEIDON and Jason-1 Altimetry for Har Us (Harnuur, Black Water Lake)
Har Us Nuur National Park Ramsar Fact Sheet
ILEC Database

Additional Data Sources

Birkett, C., and I. Mason. 1995. A new global lakes database for remote sensing programme studying climatically sensitive large lakes. Journal of Great Lakes Research, 21 (3) 307-318.
Duker, L. and L. Borre. 2001. Biodiversity conservation of the world's lakes: a preliminary framework for identifying priorities. LakeNet Report Series Number 2. Annapolis, Maryland USA.
International Lake Environment Committee, the United Nations Environment Program and Environment Agency, Government of Japan. 1997. World Lakes Database.
Ramsar Convention on Wetlands. The List of Wetlands of International Importance.

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