A brief introduction to the geographical conditions and hydrological data of Catfish Mountain Reservoir

Chinese Catfish Mountain Reservoir (also known as Catfish Mountain Lake) is located in Shangcheng County in southeastern Henan Province. It is a large reservoir in the Huaihe River Basin. It is in the transition zone from subtropical to warm temperate zones and has a continental humid monsoon climate. , with four distinct seasons, pleasant climate, abundant rainfall, sufficient sunlight, abundant water resources, average annual precipitation of 1250mm, and annual average temperature of 15 to 16°C. It is a national ecological wetland reserve.

The reservoir was built in March 1970, completed in 1973, and put into use in 1976. It is a comprehensive utilization country that mainly focuses on flood control and irrigation, and combines tourism development, aquaculture, urban water supply, and hydropower generation. Big II Reservoir. The multi-year average rainfall in the reservoir area is 1,250 mm, the multi-year average runoff is 594 million cubic meters, the controlled watershed area is 924 square kilometers, and the total storage capacity is 916 million cubic meters. The main project includes 1 main dam, 27 auxiliary dams, spillways, flood discharge tunnels, reservoir power stations, canal head hubs, etc. The main dam is 1,475.6 meters long, with a maximum dam height of 38.5 meters, and a core wall; the auxiliary dam is 3,908.5 meters, with a maximum dam height of 27 meters, a spillway with 4 holes, a maximum flood discharge capacity of 5,100 cubic meters per second, and a maximum flood discharge capacity of the spillway tunnel of 560 cubic meters per second. The installed capacity of the reservoir power station is 12,100 kilowatts, and the designed irrigation area of ??the irrigation area is 1.43 million acres. The full compensation elevation and resettlement elevation of the reservoir area are both 111.10 meters. The highest flood level in the history of the reservoir: 109.31 meters, occurred on July 12, 2003.