Spanning Hunan and Hubei provinces, it is a fault lake. The lake is 33.5 meters above sea level and covers an area of 2740 square meters.
Km, and the water storage capacity is178 billion cubic meters. To the south, it borders Hunan, Guizhou, Yuan and Lebanon.
To the north of the Yangtze River, Songzi, Taiping, ouchi and Tiao counties (the latter has been in 1958
In 2008, the dammed lake was blocked and diverted, and the lake was discharged into the Yangtze River from Chenglingji, Yueyang. Account for many years
The average runoff is 346.9 billion cubic meters. Dongting Lake is the most important collection in the Yangtze River basin.
Water and flood storage lake basins have played a great role in regulating floods and reducing peak flow.
Nearly 30%, such as 1954, the maximum inflow into the lake is 69,000 second cubic meters (7
March 3 1), the maximum discharge of the lake is only 42,000 second cubic meters (August 2), which is negative.
Reduce the threat of flood in flood season to the middle and lower reaches of the Yangtze River. Dongting Lake was originally named "Ba"
"baili Dongting", after four waters and four mouths for a long time, carried a lot of sediment deposition, plus.
Artificial embankment reclamation, the lake shrinks, and the lake becomes shallow. The lake area of 1949 is still there.
4360 square kilometers, and now the number of lakes has decreased by more than 1/3.
The newly born land is divided into East Dongting Lake, South Dongting Lake and West Dongting Lake.
Dongting Lake has the largest area, 109 1 km2. Now let the current carry it.
The sediment brought into the lake every year reaches 654.38+0.28 billion cubic meters. The area is shrinking year by year.
The usage is also gradually decreasing.
Scenery of Dongting Lake
Dongting Lake is located in the northern edge of China subtropical zone, with an annual average temperature of 16.7℃.
Annual precipitation 1400 mm, according to the statistics of Lujiao water level station, the average water level of Dongting Lake
25.57 meters (Wusongji), but the change range is large, and the highest water level changes greatly during the year.
Yes13.61m (1962), and the difference between the lowest water levels is 9.29 m (1972), absolutely.
Water level change 16.29 meters. Dongting Lake is rich in fish resources, with more than 130 species.
The economically important fish are carp, grass carp, silver carp, silver carp, bighead carp, bighead carp, snakehead, silver carp and herring.
Whitebait is a unique fish in Dongting Lake, especially in Yuanjiang.
Chinese and foreign. Shellfish resources are also very rich, reaching more than 40 species, using Hyriopsis cumingii and pig ears.
The propagation of pearls such as mussels is successful. The lake area is rich in ramie, Junshan tea and Xianglian.
Dongting Lake area is one of the important commodity grain bases in China. The surrounding Dongting Lake Plain
That is, Dongting Lake water system and four estuaries are alluvial, with an area of about 1 1,000 square kilometers.
rice.