Khuvsgul Lake
The most notable mountain lake in Mongolia is Khuvsgul, the deepest lake not just in Mongolia, but also in Central Asia. It is 136 kilometres long, its width is 36.5 kilometres and the depth in the middle of the lake is 262 meters. Its area is 2760 square kilometres. Khuvsgul has fresh water and low mineralisation (140-240 milligrams per litre), ion variation and water hardness (1,1-2,9 milligram equivalent per litreP. There is a weak alkalinity in Khuvsgul which varies between 7.4-8.2. More than ninety rivers flow into the Khuvsgul and the Eg river flows out of it.Khar-Us Lake
This lake lies at an altitude of 1157 meters, covering an area of 1852 square kilometres, with a maximum length of 72 kilometres, a width of 27 kilometres and a depth of only 4 meters. This is a fresh-water lake and has a low mineral content which varies 180-330 milligram per litre in the cool season and 110-260 milligram per litre in the warm season.Terkhiin Tsagaan Lake
The lake is situated at an altitude of 206 meters above sea level and it covers an area of 61 square kilometres. Its maximum length is 16 kilometres, the length of its shoreline 6 kilometres and average depth is 6 meters. This is a fresh and soft water lake. This lake is less mineralised; it varies from 160-210 milligram per litre in the winter to 100-180 milligram per litre in the summer.Buir Lake
The area of its water plane is 615 square kilometres, its length is 40 kilometres and its width is 21 kilometres and its maximum depth is 10.5 meters. This is a soft and fresh water lake.Khyargas Lake
The area of its water plane is 1407 square kilometres. Its mineral content is 1,000 milligram per litre. The water minerals and salt ions are unstable. The Khyargas is without an outside flow. This is a salt and alkaline water lake. The direct influences of lakes of the blind drainage basin in the Central Asia on the ecosystem are relatively few. But the ecological condition declines in the period with less water due to a flow variation of the lakes' tributary rivers and a cycle variation of the climate. In the last 20 years the length of the cycle with less water grew. As a result of this continued shortage, the water level of the Lake Buuntsagaan has dropped and the Lakes Taastsiin Tsagaan, Orog and Ulaan have dried up.Uvs Lake
The lake is situated at an altitude of 759 meters above sea level and it covers an area of 3350 square kilometres. Its maximum length is 84 kilometres, the length of its shoreline 425 kilometres and average depth is 12 meters. This is a salt-water lake, without outside flow and a high mineral content of more than 7,000 milligram per litre. Chloride and sodium ions are dominant in the lake's water.Like the land, the climate exhibits extreme contrasts. Uvs Lake experiences the coldest, warmest, and driest conditions of any place on the globe at a similar latitude. In winter, when the Central Asiatic anticyclone remains stationary above Uvs Lake, temperature of -40° C are common, and temperatures as low as - 58° C have been recorded. In summer, the basin heats up, reaching temperatures as high as40°C. Lake Uvs, located in the west of the country is the first Mongolian region registered by UNESCO as a World Heritage site. It has been recorded in two specific categories, as an area of rare and extinct animals and plants, and as a territory with untouched and pristine nature. The basin of Lake Uvs, an ancient lowland district of Asia, stretches 160 km from north to south and 600 km from east to west.
