Khyargas Lake (Mongolian: Хяргас нуур) is a salt lake in Khyargas district, Uvs Province, Western Mongolia.

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Khyargas Lake
Khyargas Lake's southeastern shore
Khyargas Lake
A satellite image of Lake Khyargas taken from Landsat-7. Smaller lake south of the Khyargas Lake is Airag Lake.
Location	Khyargas district, Uvs Province
Coordinates	49°08′N 93°25′E
Type	Endorheic
Primary inflows	Zavkhan River via Airag Nuur
Primary outflows	no
Basin countries	Mongolia
Max. length	75 km (47 mi)
Max. width	31 km (19 mi)
Surface area	1,407 km2 (543 sq mi)
Average depth	47 m (154 ft)
Max. depth	80 m (260 ft)
Water volume	66.034 km3 (53,535,000 acre⋅ft)
Residence time	54.2 years
Surface elevation	1,028.5 m (3,374 ft)
Islands	one unnamed
Settlements	no

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Some sources are using different Khyargas Lake statistics values:^[1]

• Water level: 1,035.29 m
• Surface area: 1,481.1 km²
• Average depth: 50.7 m
• Volume: 75.2 km³.

The Khyargas Lake National Park is based on the lake. This protected area was established in 2000 and covers about 3,328 km². It also includes a freshwater Airag Lake.^[2][3]