Water Districts

Section 42-604 of the Idaho Code requires the Director of the Idaho Department of Water Resources (IDWR) to create State water districts for public streams or water supplies for which the courts have adjudicated priorities of appropriation. The Director also has authority to revise the boundaries of existing districts, combine two or more districts, and/or abolish districts if such action is necessary to properly administer water uses. Districts vary in both geographical size and number of water users. Each active water district in Idaho has a watermaster who oversees water distribution within the district. Proper water distribution under Idaho water law and the appropriation system is the primary goal and responsibility of all Idaho watermasters. Daily water distribution, record keeping, measurement and general district management are the primary duties of each watermaster.