IDWR has direction and control of the distribution of water from all natural water sources within a water district to the canals, ditches, pumps and other facilities diverting therefrom. Distribution of water within the water districts is accomplished by the appointed and elected watermasters, who are supervised by the director of IDWR.
The following document is a complete list of Idaho's water districts (active and inactive) with detailed descriptions of the boundaries.
Other Water-Related Districts
Water & Sewer Districts
These districts are organized in accordance with the provisions of Idaho Code § 42-3201 et seq. Water districts supply water for domestic, commercial, and/or municipal purposes while sewer districts provide for sewage disposal. A district can be created for the combined purpose of water supply and sewage disposal. IDWR has no jurisdiction over these types of districts.