Rivers are often dammed. Some rivers have multiple damns in various places. These can be beneficial or detrimental.
One of the core functions of a dam is to manipulate a river’s flow. It is common for rivers to flood during the rainy season. Moreover, at the start of spring, flooding can also be caused by melting snow. Dams also have the capacity to produce hydroelectric power. This can provide a significant amount of electricity to households and businesses. The construction of dams requires the presence of a lake behind the dam. These lakes can be used for recreation. This includes fishing, boating, and swimming.
However, dams have significant environmental impacts. Lake formation forces people and animals to leave their homes. Furthermore, this can damage the natural habitats of many types of fish. Dams also halt the flow of useful silt. This lowers the fertility of the land beyond the dams.