The growing crisis on the Colorado River came into sharper focus last week when the Bureau of Reclamation began emergency releases from Flaming Gorge Reservoir to shore up Lake Powell’s declining levels, now at historic lows.

The move will bolster Powell’s level by 3 feet in hopes of preventing it from dropping to a point where Glen Canyon Dam would not be able to generate electrical power, according to the agency’s Upper Colorado regional director Wayne Pullan.