The Colorado then enters northern Arizona, where since the 1960s Glen Canyon Dam near Page has flooded the Glen Canyon reach of the river, forming Lake Powell for water supply and hydroelectricity generation.
Sungai Colorado kemudian memasuki utara Arizona, di mana Bendungan Glen Canyon sejak tahun 1960-an berhampiran Page telah membanjiri Glen Canyon, membentuk Danau Powell untuk bekalan air dan penjanaan hidroelektrik.