Official Government Website

Idaho Water Resource Board Responsibilities and Authority

This overview summarizes the creation of the Board, the responsibilities and authority of the Board, and the duties of the IDWR Director and staff in supporting the Board.


Article XV, Section 7 of the Idaho Constitution called for the creation of a “Water Resource Agency,” but it did not establish the agency. In 1965, the 38th legislature established the Idaho Water Resource Board and defined its organization, powers, and duties. Board organization and duties are established in Idaho Code §§ 42-1732 through 42-1734.

The Board was created primarily because of concern that a more politically-powerful state or federal government, or other entity, would gobble up Idaho water. When the Board was created, it was provided with authority, subject to legislative approval, to “formulate and adopt a comprehensive state water plan for conservation, development, management, and optimum use of all unappropriated water resources and waterways of the state in the public interest.”

When the Board and IDWR merged in 1974, Idaho Code § 42-1732 was modified to place the Board within IDWR. To assist the Board, the legislature created additional duties for the IDWR Director “to perform administrative duties and such other functions as the Board may from time to time assign to the Director to enable the Board to carry out its powers and duties.” (Idaho Code § 42-1805(6))


The Board is comprised of eight members appointed by the Governor to a four-year term. No more than four can be from the same political party, and to ensure representation of water users across the state, one member is appointed from each of four districts and no more than three can be from any one district.

For contact information and appointment terms, visit the Board Members page.



The Board meets every 6 to 8 weeks, but periodically has teleconference meetings to address specific issues that require immediate action. As needed, the Board establishes subcommittees to work on specific tasks or programs. For example, the Board established a subcommittee to evaluate minimum stream flow activities in South Central Idaho.

For meeting dates and documents, visit the Meetings & Minutes page.


In addition to formulating and implementing the state water plan and comprehensive basin plans, which includes authorities to designate natural and protected rivers, the Board also provides financial assistance for water development and conservation projects. The Board has two accounts, water management and revolving development, from which it makes loans and grants. A third account, the Aquifer Planning and Management Fund, was added by the Idaho Legislature in 2008 (Idaho Code § 42-1780). This fund was established for technical studies, facilitation services, hydrologic monitoring, measurement, and Comprehensive Aquifer Planning and Management. Idaho Code § 42-1779 authorized the Board to conduct a Comprehensive Aquifer Planning program across the state. The Board can also issue debt in the form of revenue bonds, where the proceeds are loaned to the entity requesting the financial assistance. The loan repayments are then the revenue used to repay the debt service on the bonds. The Board also adopts rules for well construction, well driller licensing, injection wells, geothermal resources, mine tailings impoundments, safety of dams, and stream channel alterations. The Idaho Water Supply Bank is also the Board’s responsibility as well as implementing legislative mandates as was done in 1995 with managed aquifer recharge.

Additional authorities and funding were given to the Board to purchase the Bell Rapids high lift irrigation project water rights for the purpose of satisfying the terms of the Nez Perce Agreement and to provide a water source to help mitigate problems on the Eastern Snake River Plain. Most recently, the legislature appropriated funds and the Board acquired Pristine Springs an aquaculture and ranching operation near Twin Falls, Idaho. This purchase included valuable water rights which were later sold to the City of Twin Falls and to groundwater users who were at risk of being required to stop pumping.

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