Why It Matters
Wyoming water users — including municipalities, trona mines, and soda ash operations in the southwestern part of the state — are facing mandatory, uncompensated cuts to their water rights as the Colorado River Basin confronts what officials are calling historically dire water conditions. The consequences for local economies and communities that depend on the river system could be severe and long-lasting.
The Colorado River is a lifeline for roughly 40 million people across seven western states and Mexico. When Wyoming’s water supply tightens, the effects ripple outward through agriculture, industry, tribal communities, and downstream states already watching their own reservoir levels with alarm.
What Happened
Wyoming Governor Mark Gordon joined the governors of Utah, Colorado, and New Mexico on Thursday in a joint announcement warning that a significant emergency water release from Flaming Gorge Reservoir is imminent. The four states — known collectively as the Upper Division States — cited record-warm winter temperatures and historic low snowpack as the driving factors behind the crisis.
“Because of such diminished runoff, existing state laws in the Upper Division States require water users to face cuts to water rights dating back to the 1800s — these cuts are mandatory, uncompensated, and will have significant impacts on water users, including Upper Basin tribes, and local economies,” Governor Gordon said in the joint press release.
Wyoming State Engineer Brandon Gebhart confirmed the severity of the situation. “There won’t be enough water to satisfy existing water rights, and so we regulate junior users to satisfy senior users,” Gebhart told WyoFile. He added that due to the historically poor hydrology, many Wyoming streams will likely have only enough water to satisfy the most senior rights, some dating back to the 1880s.
By the Numbers
- 40 million people across seven western states and Mexico depend on the Colorado River system.
- Flaming Gorge Reservoir holds a total storage capacity of approximately 3.8 million acre-feet of water.
- The federal Bureau of Reclamation is weighing an emergency release of approximately 660,000 acre-feet, with the possibility of up to 1 million acre-feet.
- Emergency releases are expected to begin as early as May 1, with final volume decisions anticipated by the end of April.
- Water rights being prioritized include some dating back to the 1880s, reflecting Wyoming’s longstanding prior appropriation doctrine.
Zoom Out
The crisis reflects a broader and accelerating challenge across the Mountain West: a shrinking water supply colliding with growing demand from agriculture, energy production, tribal nations, and urban centers. The Colorado River Basin’s warmest winter on record has stripped the snowpack that normally replenishes river flows through the spring and summer months.
Under the prior appropriation system that governs water law throughout the West — often summarized as “first in time, first in right” — junior water rights holders bear the first and heaviest burden when supplies fall short. In southwestern Wyoming, that means some municipalities and energy-sector industrial operations, including trona mines and soda ash facilities, face the prospect of having their water access curtailed entirely until senior rights are satisfied.
Flaming Gorge Reservoir, shared between Wyoming and Utah, serves as a critical storage buffer for the Upper Basin states and helps maintain operational levels at Lake Powell, which in turn supplies water to Arizona, California, and Nevada. Keeping those downstream obligations intact is both a legal requirement and a practical necessity for the broader river compact that has governed Colorado River water-sharing for decades.
What’s Next
The Bureau of Reclamation is expected to finalize the volume of the emergency release from Flaming Gorge by the end of April. State Engineer Gebhart indicated the release could begin May 1 or potentially sooner. Wyoming water regulators will continue enforcing the state’s prior appropriation system, ordering junior rights holders to reduce or halt water use as conditions require.
Governor Gordon and his counterparts in Utah, Colorado, and New Mexico are expected to provide additional updates as the situation develops heading into the critical spring runoff season. For Wyoming communities and industries in the crosshairs of mandatory cuts, the coming weeks will determine just how severe the restrictions become.
About the Author
