Wanderlust World Wanderlust World Lake Powell, the vast reservoir on the Colorado River straddling Utah and Arizona, receives its water mainly from two major rivers:
The Colorado River is the primary source, carving the spectacular canyonlands that surround the lake. Originating in the Rocky Mountains, it winds through Utah and Arizona before reaching Glen Canyon Dam, which impounds Lake Powell.
A significant tributary, the San Juan River drains a large portion of the southwestern United States and joins the Colorado River within Glen Canyon. Its contribution bolsters the reservoir’s volume, especially during spring runoff.
Together, the Colorado and San Juan sustain Lake Powell’s water levels, support hydroelectric power generation, and provide recreation opportunities for millions of visitors each year. Understanding their watersheds is key to managing this critical water resource in an arid region.