Agua Caliente Band of Cahuilla Indians v. Coachella Valley Water Dist.

In Agua Caliente Band of Cahuilla Indians v. Coachella Valley Water Dist., the Ninth Circuit upheld the Tribe’s federal reserved right to the groundwater underlying its reservation. This decision enforces that the courts will not defer to state water law when there is an established federal reserved water right. Further, the Ninth Circuit expressly extended this right to groundwater.