Fontanelle Reservoir

U.S. Bureau of Reclamation

Construction on the Fontanelle Reservoir won't get started until extreme drought strikes because officials say the unfinished bottom won't be accessible until then.

US Fish and Wildlife Service-Mountain Prairie Region

States in the Colorado River’s upper basin, including Wyoming, are considering ways to start saving any water conserved from efforts like avoiding irrigation in hayfields or watering lawns. It’s a novel idea being considered in the wake of low snow packs this year in Colorado, New Mexico and Utah that have caused Lake Powell to receive less than half its usual flow. That flow is needed to satisfy water allocations promised to states downstream. 

Eric Barnes

In the 1960’s, Fontanelle Reservoir in southwest Wyoming was partially built to store water from the Green River for irrigation and industrial use in Western Wyoming. It was never completed, but now a bill has passed the U.S. House that would allow the state of Wyoming to finish the job.

Since the Green River is a major tributary of the Colorado, expanding the reservoir could allow as much as 100,000 more acre feet of water to be diverted from the Colorado River system.

With drought and climate change creating water shortages in lower desert states, Wyoming is looking for more ways to store its share of Colorado River water. Last week, a bill sponsored by Representative Cynthia Lummis that would expand the storage capacity of Fontanelle Reservoir on the Green River in southwest Wyoming passed the House Natural Resources Committee unanimously.

Lummis says Wyoming needs more water to grow.