Khyargas NuurKhyargas Lake is a salt lake in Khyargas district, Uvs Province, Western Mongolia.Some sources are using different Khyargas Lake statistics values: Water level: Surface area: Average depth: Volume: 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.