Water conservancy fund refers to the funds used for water conservancy construction and management, which belongs to a kind of government revenue. In order to ensure the rational utilization and scientific management of water resources, China collects water conservancy funds from some units and individuals who have the special right to use water resources. The tax rate levied by water conservancy funds refers to the tax rate levied by the government to ensure the rational use of water resources in the process of water resources utilization.

The tax rate of water conservancy funds is determined according to national and local policies and the actual situation of water resources utilization. According to the Water Law of People's Republic of China (PRC), China divides water resources into three categories, and implements different collection standards for different types of water resources. Generally speaking, the collection standard of Class I water resources is relatively high, while the collection standard of Class III water resources is relatively low.

The collected water conservancy funds are mainly used to finance water conservancy construction and management, such as building water conservancy facilities, improving water environment and controlling water pollution. At the same time, it can also be used for scientific research, technology promotion and personnel training to improve the scientificity and efficiency of water conservancy work. In fact, water conservancy fund is not only a tax, but also a manifestation of social responsibility. Only reasonable collection and utilization can better ensure the safety and sustainable development of water resources in China.