Caohai Lake (Chinese: 草海; pinyin: Cǎo Hǎi, Sea of GrassinChinese) is a natural water-body situated in Northwest Guizhou Provinceofsouthwest China. The lake is situated on Weining Mountain, in the outskirts of Weining County. Caohai Village lies directly at the edge of the wetland.
| Caohai Lake | |
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  Caohai Lake
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| Location | Guizhou Province |
| Coordinates | 26°50′45″N 104°14′49″E / 26.84583°N 104.24694°E / 26.84583; 104.24694 |
| Basin countries | China |
| Surface area | 5 km2 (1.9 sq mi) |
| Average depth | 2 m (6 ft 7 in) |
| Surface elevation | 2,200 m (7,200 ft) |
The lake originally covered 4,666.2 square kilometres (1,801.6 sq mi). However, as a result of drainage, cultivation, and climate change during the last few decades, the lake area has contracted to only 5 km2 (1.9 sq mi). Its average depth is 2 m (6 ft 7 in) and it stands at 2,200 m (7,200 ft) above sea level.
In 1985, the area around the lake was designated as a nature reserve at the provincial level, and in 1992 this was elevated to a national level designation. Cao Hai Nature Reserve is an Important Bird Area. The reserve area is 120 km2 (46 sq mi).[1]
The lake area is the largest and most important wetland of Southwest China, providing wintering grounds for black-necked cranes, the only crane species inhabiting plateaus left in the world. In addition, the lake is also inhabited by 184 bird species, including common cranes, hooded cranes, white storks, black storks, bar-headed geese, golden eagles, eastern imperial eagles, white-tailed sea-eagles, and ruddy shelducks.
One frog species, Rana weiningensis, is endemic to this area.[1]
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