Before the construction of Shek Pik Reservoir, the freshwater in Cheung Chau had always come from groundwater.

In order to solve the water supply problems, the Hong Kong Government built a concrete dam on Chi Ma Wan Peninsula, Lantau, on the opposite bank of Cheung Chau with a capacity of about 130,000 m3, 91.1 m long and 15 m high in a small reservoir and then used a 6-inch submarine pipe to divert water to the Cheung Chau Ferry Pier and transport it to the water storage tanks of Tai Kwai Wan.

At that time, the government also followed the practice of the first submarine water pipeline from Hong Kong Island to Kowloon to build a fountain at the landing site, and held a water spray ceremony on the day of the opening ceremony in August 1955.

The reservoir is composed of many clear and pollution-free tributaries and has not been disturbed by human beings.

[6] Because of this, there has not been evidence of alien species invasion, gave birth to a large number of freshwater fish, such as Oryzias curvinotus.