Voluntary water conservation program.

SF 84 creates a voluntary program allowing water right holders in Wyoming’s Colorado River basin to apply for projects that reduce water use. Participants must submit applications to the state engineer, which are reviewed to ensure projects reduce "consumptive use" (water fully depleted for agricultural/domestic purposes) or help meet Wyoming’s interstate water obligations. The state engineer approves projects only if they don’t harm other water rights, require public notice, and include a 30-day comment period for affected neighbors. The program expires after a set date (sunset provision) and requires annual reports on conservation outcomes.