Huaidian dam is located in the middle reaches of the Shaying River. It is situated in Huaidian Town, Shenqiu County, Zhoukou City, Henan Province, China (33°23'15''N, 115°04'24''E). It is approximately 60 km upstream from Zhoukou City and 34 km from the boundary between Henan and Anhui provinces. The controlled drainage area of the reaches 28,150 km2, making it an important regulating project on the mainstem of the Shaying River.
Huaidian dam consists of three sections: Shallow Sluice Gates, Deep Sluice Gates, and Ship Gates. The Shallow Sluice Gates, constructed in 1959, comprise 18 holes, each 6m wide, for water discharge. The Deep Sluice Gates, built in 1969, consist of 5 holes, each 10m wide, and are operated only during flood periods for flood discharge. The Ship Gates is used for normal navigation.
The design flood control capacity of Huaidian dam is 3,200 m3/s, with a verified flood control capacity of 3,500 m3/s. The maximum irrigation water level is 40m, and the maximum storage capacity is 45 million m3.
Huaidian dam is one of the main experimental sites in our research group. Our research focuses on the 'Impact of the Dam on Water Environment' and has been conducting field experiments since 2013. We collect hydrodynamic and water quality data under various gate openings (gate regulation).
