Immigration scope of Wulahada Reservoir

The relocation scope of Wulanhada Reservoir belongs to Songhua River Basin.

Reservoirs, generally interpreted as "water conservancy engineering structures for retaining floods and regulating water flows, can be used for irrigation, power generation, flood control and fish farming." It refers to an artificial lake formed by building a barrage at the narrow entrance of a canyon or river.

After the reservoir is completed, it can play a role in flood control, water storage irrigation, water supply, power generation, fish farming and so on. Sometimes natural lakes are also called reservoirs. Reservoirs are usually divided into small, medium and large reservoirs according to their storage capacity.

The precipitation that falls on the ground (partially seeps into the ground) in the basin is called river runoff after it is discharged into the river in different ways from the ground and underground. Due to the variability and non-repetition of river runoff, the incoming water is different from year to year, from season to season, and from region to region.

Most water conservancy departments (such as irrigation, power generation, water supply, shipping, etc. ) need a relatively fixed water consumption and water consumption time, and their requirements are often not fully adapted to natural water supply. In order to solve the problem of redistribution of runoff in time and space and fully develop and utilize water resources to meet the requirements of water conservancy departments, people often build some reservoir projects on rivers.

The beneficial function of the reservoir is to regulate runoff, store flood and make up for drought, so that natural water can meet the requirements of the water conservancy department in time and space.