Dams are structures built to hold back water. They are usually built on rivers or lakes. Dams store water and can form large reservoirs. They are used in water management systems.

Dams are found in many countries around the world. They are used for water storage, flood control, and energy generation. Dams are built from materials such as concrete or earth.

Dams are part of large engineering projects. They are used in managing water systems and resources. Dams are important in many regions.