Fontenelle Dam

Current Status

Last Updated: May 5, 2023

As of May 4, 2023, the Fontenelle Reservoir pool elevation is 6475.71 feet, which amounts to 41 percent of live storage capacity. Inflows for the month of April totaled approximately 75,085 acre-feet (af) or 89 percent of average.

Ice along the Green River has thawed, and spring releases have started. Releases from the dam will increase throughout spring to meet elevation targets. Per the May final forecast, maximum total release rates are forecasted to occur in late June at approximately 5,000 cfs, subject to hydrology.

The May final forecast for unregulated inflows into Fontenelle for the next three months projects above average conditions. May, June, and July Most Probable inflow volumes amount to 240,000 af (137 percent of average), 335,000 af (109 percent of average), and 180,000 af (107 percent of average), respectively.

Please refer to the following link for Green River flow projections, through Green River, WY, provided by the Colorado River Basin Forecast Center: CBRFC Green River, WY Projection

To view the most current reservoir elevation, content, inflow and release, click on: Fontenelle Reservoir Data.

Working Group Meetings

The next Fontenelle Working Group meeting is scheduled for August 24, 2023 at 10:00 a.m at Green River, WY, tentatively. Details on the meeting will be provided as we get closer to the meeting date. Prior Fontenelle Working Group meeting minutes are available online on USBR’s website at the Working Group webpage. The Fontenelle Working Group is an open public forum for information exchange between Reclamation and other parties associated with the operation of Fontenelle Reservoir.


Please contact the Operations Group via e-mail at for additional information.

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Last Updated: 5/5/23