| Tyuntyugur | |
|---|---|
| Тімтуір / Тюнтюгур | |
 Sentinel-2 image of Tyuntyugur and Zhanshura lakes in 2022. | |
  Tyuntyugur | |
| Location | Turgay Basin |
| Coordinates | 52°41′N65°50′E / 52.683°N 65.833°E /52.683; 65.833 |
| Type | endorheic |
| Primary inflows | Tyuntyugur |
| Primary outflows | none |
| Catchment area | 3,570 square kilometers (1,380 sq mi) |
| Basin countries | Kazakhstan |
| Max. length | 9.5 kilometers (5.9 mi) |
| Max. width | 6.9 kilometers (4.3 mi) |
| Surface area | 54.3 square kilometers (21.0 sq mi) |
| Average depth | 1.6 meters (5 ft 3 in) |
| Max. depth | 3 meters (9.8 ft) |
| Water volume | 0.08 cubic kilometers (0.019 cu mi) |
| Shore length1 | 27.4 kilometers (17.0 mi) |
| Surface elevation | 203 meters (666 ft) |
| 1 Shore length isnot a well-defined measure. | |
Tyuntyugur (Kazakh:Тімтуір;Russian:Тюнтюгур) is a lake in theKostanay Region,Kazakhstan.[1]
Tyuntyugur is asteppe lake of the central sector of theTurgay Basin inKarasu District, Kostanay Region. By the northern shore lies the small village of Tyuntyugur and the administrative center of the district,Karasu village, is located 15 kilometers (9.3 mi) to the west of the western lakeshore.[2] Tyuntyugur is part of the Koibagar-Tyuntyugur Lake System, a 58,000 hectares (140,000 acres)Ramsar site, since 2009.[2][3][1]
Tyuntyugur is anendorheic lake lying 6 kilometers (3.7 mi) to the east of the largerKoybagar lake. The lake has a regular, roughly oval, shape. Its water isbrackish. The smaller and elongated lakeZhanshura lies close to the east. They are separated by alandspit that is at its narrowest in the area of the southeastern shore of lake Tyuntyugur, where the western shore of lake Zhanshura is only 1 kilometer (0.62 mi) away. The Tyuntyugur river flows from the south into the southern end of the lake.[2][1]
The eastern shore of lake Tyuntyugur is bound by about 4.5 meters (15 ft) high cliffs, while the southern coastline is flat and muddy. The lake is fed bysnow and freezes every winter, shrinking significantly in years of drought. Tyuntyugur is surrounded by agricultural fields and its water is used for irrigation, which contributes to increasingsiltation.[4]
The lake is part of the Koybagar-Tyuntyugur lake group. It is a critical site for nesting, migration and molting of 39 waterfowl and wetland bird species, such as thegreylag goose,mallard,gadwall,garganey,common pochard,tufted duck andEurasian coot.[5] 13 species of birds that visit the lake are listed ascritically endangered, such as thesiberian crane and thegyrfalcon.[6] There are ten different fish species in the lake, includingperch andpike.[7]
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