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Utah water law allows people to hold existing water rights and, under certain conditions, redirect that water for environmental purposes like keeping water flowing in streams, supporting wildlife on state lands, or delivering water to Colorado River reservoirs. This bill creates a formal new category called a "dedicated water application," which lets a water right holder add an environmental use to their existing water right — either for a fixed period or indefinitely — without giving up the original right, and allows that use to alternate seasonally with the original purpose in the same year. The state engineer must prioritize processing these applications but can deny one if it would take farmland out of irrigation for more than two full seasons in any five-year period on the same field, and can require annual reporting from approved applicants. The bill also prohibits separating a dedicated water application from the underlying water right it is based on, and specifies that the application automatically expires if that underlying right lapses, is forfeited, or changes hands.