Alston

I. Background.

Grand Canyon National Park (“Park”) was established by Congress in 1919 and expanded in 1975. The Park consists of more than 1.2 million acres located on the southern end of the Colorado Plateau in Arizona.

The Park includes a 277-mile stretch of the Colorado River referred to in this order as the “Colorado River Corridor” or RIVER RUNNERS v. MARTIN 9281 the “Corridor.” The Park Service regulates the Colorado River Corridor through a periodically-revised Colorado River Man- agement Plan (“CRMP”). In November of 2005, the Park Ser- vice issued a Final Environmental Impact Statement (“FEIS”) for the 2006 CRMP. On February 17, 2006, the Park Service issued a Record of Decision (“ROD”) that adopted and approved the 2006 CRMP. The 2006 CRMP permits the con- tinued use of motorized rafts, generators, and helicopters in the Colorado River Corridor.

Plaintiffs River Runners for Wilderness, Rock the Earth, Wilderness Watch, and Living Rivers constitute “a coalition of organizations committed to protecting and restoring the Grand Canyon’s wilderness character and unique natural resources and ensuring fair and equitable access to such resources[.]”…