This lake was once much larger, but its size has shrunk due to irrigation and other reasons. Now it is quite a shallow lake that now measures about 5 to 20 square kilometers or 2 to 8 square miles depending on the season and rainfall. It has been rapidly shrinking. It is about 2,200 meters high (about 7,217 feet). It is about two meters or about 6 feet 7 inches deep. The area is a nature preserve and tourist highlight, and the main attractions are the natural beauty and the animals.
The nature preserve is called Caohai Nature Preserve. It measures about 46 square miles. A lot of species of birds nest there or stop there during their migrations, and this is one of the area's main attractions. Depending on the season, you can see a number of different species of birds. There might be about a hundred species of birds present at one time.
Caohai (草海 Cǎo Hǎi) means sea of grass. It shrank quickly. It is in Weining Mountain of Weining County. There is a village at the lake's side called Caohai Village. The area became a nature preserve in 1985.
Address: Caohai Lake, Weining County, Guizhou Province. 贵州毕节地区威宁彝族回族苗族自治县草海自然保护区. It is about 3 kilometers east of Weining.
Bus: There is no trains to the Caohai Lake. However you can take buses from Guiyang, and then from there you can travel five hours or so on a bus. The bus goes to Weining. You can walk to Caohai Lake in about 30 minutes from Weining.
Airport: Guiyang Longdongbao Airport is 300 kilometers away in Guiyang. From there, you can go to Beijing, Hong Kong and Macau.
Prices: There might not be any ticket necessary to visit the lakeside. Or if there is a ticket price, it may be only 10 RMB or about 1.50 USD. If you wish, you can get a charted boat outing on someone's boat for about 200 RMB or about 30 USD.