Hydrological characteristics around rivers

The total area of the Yangtze River basin is 2793.84 square kilometers, and the basin area within the county is 2028.22 square kilometers. 1958 set up a hydrological station in liangsantun near the county seat to observe the hydrology around the river. According to the observation records of Huanjiang Hydrological Station, the annual maximum rainfall pattern is 1983, the range between flood level and low water level is 4.49 ~ 29 10 cubic meter, and the maximum 24-hour peak flow is 3920 cubic meters per second (191year). After liberation, the maximum discharge appeared at 1970, the minimum discharge was 3. 1 m3/s (1963), the average discharge for many years was 62.43 m3/s, and the riverbed width was generally about 30m. The drop from Heyuan to the county boundary is 227 meters. The upstream Xunle River forms a great natural gap between the reach of Xunle and the deep mountain valley where Gu Bin River passes. Liu Yao reach of Xunle Miao township and Meng Yao reach of Chuanshan village are rich in hydropower resources, which need to be developed urgently.