Use of inflatable dams as agricultural weirs in Hong Kong

The Hong Kong government has embarked on a project titled Demolition and Realignment of Agricultural Weirs in which polluted weirs located in major streams are being replaced by inflatable dams. The dams are capable of being deflated automatically prior to a flood. This characteristic is advantageous since Hong Kong is subject to flooding during severe rainstorms. The ease of inflation and deflation allows the dams to be routinely cleaned of the deposited silt and accumulated debris. Thus, they are of great benefit in the abatement of pollution.