Federal officials have discovered damage inside Glen Canyon Dam that could force limits on how much Colorado River water is released at low reservoir levels, raising risks the Southwest could face ...

GRAND CANYON NATIONAL PARK, Ariz.— Federal researchers reported Wednesday that despite last fall’s eradication efforts the number of invasive smallmouth bass more than doubled in the Colorado River ...

It must act decisively, and it must act now to address operation of the dam to keep the bass from establishing downstream and to save the chub.” Today’s comments on a draft environmental assessment ...

Glen Canyon Dam holds back Lake Powell, one of the largest man-made reservoirs in the United States. It and Lake Mead, which straddles the Arizona-Nevada line, are key to ensuring Colorado River ...