Idaho Code § 42-1732
Pursuant to the provisions of article 15, section 7, of the constitution of the state of Idaho, there is hereby established as the constitutional water agency within the department of water resources the Idaho water resource board which shall consist of eight (8) appointed members. The eight (8) appointed members shall be qualified electors of the state, no more than four (4) of whom shall be members of the same political party. Appointment of board members shall be made solely upon consideration of their knowledge, interest and active participation in the field of reclamation, water use or conservation and no member shall be appointed a member of the board unless he shall be well informed upon, interested in, and engaged actively in the field of reclamation, water use or conservation of water. Four (4) of these members shall be appointed at large and no more than three (3) of the eight (8) members shall be residents of a single district. To insure representation of water users of all geographic locations of the state, one (1) member shall be appointed from each of the following districts:
District No. 1 which shall consist of the counties of Boundary, Bonner, Kootenai, Shoshone, Benewah, Latah, Clearwater, Nez Perce, Lewis and Idaho;
District No. 2 which shall consist of the counties of Adams, Valley, Washington, Payette, Gem, Boise, Canyon, Ada, Elmore and Owyhee;
District No. 3 which shall consist of the counties of Camas, Gooding, Jerome, Twin Falls, Cassia, Blaine, Lincoln, Minidoka, Lemhi, Custer and Butte;
District No. 4 which shall consist of the counties of Clark, Fremont, Jefferson, Madison, Teton, Bingham, Bonneville, Power, Bannock, Caribou, Oneida, Franklin and Bear Lake.
All appointments shall be made by the governor with the advice and consent of the senate. As soon as practicable after passage of this act, the governor shall appoint all eight (8) members; four (4) members shall be appointed to terms which will expire on January 1, 1967, four (4) members shall be appointed to terms which will expire on January 1, 1969, and thereafter all appointments shall be to four (4) year terms. Any vacancy caused by death, removal, disqualification, or resignation, shall be filled by the governor for the unexpired term caused by the vacancy. The appointed members shall be compensated as provided by section 59-509(h), Idaho Code.
Idaho Code § 42-1732