Streams, Dams & Flooding

The Idaho Department of Water Resources is charged with monitoring certain kinds of water-related construction in Idaho. If you plan to do any construction, alteration or other development work in areas involving water, there are various permitting requirements from the Idaho Department of Water Resources (and other agencies) of which you need to be aware. We work to ensure your safety and the beauty of our surroundings.

• Dam Safety Program
  Learn about the classifications of Idaho's dams or find forms and information for the construction of a dam or mine tailings impoundment structure.
• Floodplain Management
  Find floodplain information, read about the management of the National Flood Insurance Program, and view digital flood hazard maps.
• Stream Channel Protection Program
  Any work being done within the beds and banks of a continuously flowing stream must be approved in advance by IDWR. Look here for the applications and permits you need.