What is the current water level and area of Poyang Lake?

The average water level of Poyang Lake for many years 12.86m, the highest water level1July 3, 998/day 65438+22.59m, and the lowest water level1February 6, 963 65438+5.90m (Hukou Hydrological Station, Wusong Base). During the year, the variation range of water level was 9.79-15.36m, and the variation range of absolute water level was16.69m.. With the change of water quantity, the water level of Poyang Lake fluctuates greatly, which has the function of natural flood storage. Due to the fluctuation of water level, the lake area changes greatly. During the flood season, the water level rises, the lake surface increases sharply and the water surface is vast; In the dry season, the water level drops, the beach is exposed, and the water flows back to the trough, leaving only a few winding waterways on the lake. It has a natural landscape of "a dry line, a flood".

Lake body characteristics

Water from Ganjiang River, Xiushui River, Pojiang River (Raohe River), Xinjiang River and Fuhe River. , flows into the Yangtze River through hukou. Lake basin is formed by crustal subsidence and continuous deposition. It looks like a gourd, with a length of 1 10 km from north to south, a width of 50-70 km from east to west, and a distance of only 5- 15 km from north. The level (14 ~ 15 m) lake area is 3 150 square kilometers, and the advanced (20 m) lake area is 4 125 square kilometers. However, when the water level is low (12m), it is only 500 square kilometers, so that "there is water in summer and autumn, and there is endless barren beach in winter and spring". It is impossible to cultivate millions of acres of lakes and beaches, and it is easy to breed grass snails.

Usually divided into north and south (or east and west) lakes, with Songmen Mountain between Duchang and Wucheng as the boundary. Northwest of Songmen Mountain is Beihu Lake, or Xipo Lake. The lake is narrow, which is actually a long and narrow river leading to the river. It is 40 kilometers long, 3 to 5 kilometers wide, and the narrowest part is about 2.8 kilometers. Nanhu Lake, or Dongpo Lake, located in the south of Songmen Mountain, is the main part of the lake area, with a length of 133 km and a width of 74 km.