Ban Chengzi Reservoir

Ban Chengzi Reservoir

Construction started in November 1975, and the dam was completed in July 1976, with flood control and water storage beginning the same year. A total of 850,000 cubic meters of earth and stone were excavated. The reservoir has a total capacity of 10.2 million cubic meters, a normal water surface area of 373,000 square meters, and controls a drainage basin of 6.1 square kilometers. It features one dam, one spillway, one water inlet tunnel, and one power station. The dam is an asphalt concrete inclined core rock-fill embankment dam, with a maximum height of 29 meters and a crest length of 185 meters. A power station with an installed capacity of 250 kilowatts was built downstream of the dam. The reservoir provides an average annual water supply of 4.5 million cubic meters, generates over 300,000 kWh of electricity per year, and irrigates 20,000 mu of farmland.

Location

North of Ban Chengzi Village in the mountainous area of Miyun County