45-175. Chronological preference to water in times of scarcity During years when a scarcity of water exists, owners of lands shall have preference to the water for irrigation according to the dates of their appropriation or their occupation of the lands, either by themselves or their grantors. The oldest titles shall have precedence.
Arizona Legal Code
§ 45.175
Source: https://www.azleg.gov/ars/45/00175.htm· Version 2026