Click the link to read the article on The Denver Post website (Elise Schmelzer). Here’s an excerpt:
June 21, 2026
The two major reservoirs on the Colorado River face dire outlooks that will likely spur federal officials to restrict the amount of water flowing downstream — and decrease hydropower generation — in the coming months, even after they ordered recent emergency measures. Projections released last week by the U.S. Bureau of Reclamation show that if dry conditions persist, Lake Powell’s water level could dip below a threshold called “minimum power pool” as soon as February. That’s the level below which water can no longer flow through the reservoir’s hydropower turbines. Without intervention, the projections say, the lake will remain below the critical elevation for the foreseeable future.
The threat of Powell hitting that threshold — 3,490 feet in elevation — has hovered above federal water managers for months as the reservoir has continued to drop to record-low levels. In April, U.S. Bureau of Reclamation leaders announced that they would send up to 1 million acre-feet of water from the upstream Flaming Gorge Reservoir to Powell and reduce the amount of water released from Powell to keep the reservoir’s level at 3,500 feet above sea level — which includes a small buffer Reclamation officials want to maintain to stay above the power pool level. Powell’s water levels continue to drop as Colorado River leaders deal with two crises: one climatological and one political. Long-term drought fueled by climate change has shrunk the Colorado River’s flows as federal officials and water leaders in the seven basin states — including Colorado, home to its headwaters — struggle to agree on longer-term plans for the river’s management. So far, they’ve failed to find agreement on how to divvy up the usage cuts necessary to adapt to lower flows that reduce the water supply for farmers and residents in a region that’s home to 40 million people.
When Lake Powell’s levels fall below minimum power pool, that means water can no longer flow through the intake tubes for Glen Canyon Dam‘s hydropower facility, which is the primary method for moving water downstream from the reservoir in southern Utah. Instead, water can move only through much smaller bypass tubes that, for years, have been considered unsafe for long-term use — though Reclamation officials now say they can be operated safely with continuous maintenance. The bureau’s most recent projections, released Tuesday, show that the emergency measures taken this spring will only be a stopgap, unless extremely wet weather returns…If Lake Powell falls below minimum power pool, the only way to release water downstream is through four 8-foot-diameter tubes called the river outlet works. For years, Bureau of Reclamation officials have said the tubes were not designed for long-term use at low water levels, and such use could cause structural damage to the dam. But officials now say there’s a way to safely use the river outlet works, if needed…Recent studies of the river outlet works have shown that managers can operate the backup tubes continuously in a safe way, said Katrina Grantz, the deputy regional director for Reclamation’s Upper Colorado Region, at a conference in Boulder earlier this month. But the outlets require frequent inspections and maintenance when used continuously, which means that one of the four conduits will routinely be offline. Over the course of a year, the maintenance rotation will result in an effective capacity of about three and a half outlets operating continuously, bureau spokesman Peter Soeth wrote in an email in response to follow-up questions from The Denver Post.
“The river outlet works were never designed to serve as the primary or long‑term release pathway,” Soeth said. “Relying on them continuously would reduce operational flexibility and, over extended periods, could introduce wear that requires more intensive maintenance.”
