The Bureau of Reclamation warns that the Colorado River may fluctuate without warning during the summer months.
That means people who recreate on the river need to exercise caution.
The Colorado River plays an important role in the Southwestern power grid.
Glen Canyon Dam helps generate hydroelectric power, which is useful during the summer when demand is high.
The Bureau says that boaters and campers in the Grand Canyon should exercise caution because the river may fluctuate without warning when water is released from the dam. Boaters should secure their boats and camps should be away from the river.
