Fontenelle Dam

Current Status

Last Updated: April 08, 2024

As of April 07, 2024, the Fontenelle Reservoir pool elevation is 6469.56 feet, which amounts to 33 percent of live storage capacity. Inflows for the month of March totaled approximately 50,476 acre-feet (af) or 89 percent of average.

Fontenelle releases started the month at 600 cfs due to powerplant annual maintenance. Due to changes to hydrologic conditions, releases were increased to 800 cfs on April 8, 2024. Releases will be maintained at 800 cfs until maintenance is completed. Maintenance is scheduled to be completed on or before April 26th, 2024. Releases will increase to approx. 1,500 cfs following annual maintenance period and pending hydrologic conditions. Releases from the dam will increase throughout spring to meet elevation targets, as subject to hydrology.

The April final forecast for unregulated inflows into Fontenelle for the next three months projects near average conditions. April, May, and June Most Probable inflow volumes amount to 80,000 af (95 percent of average), 160,000 af (91 percent of average), and 320,000 af (104 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 April 18, 2024 at 10 AM MDT at the Joint Powers Water Board in Green River or via Teams. Please contact Alex Pivarnik via email at for a virtual meeting invite.

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: 4/8/24