Fontenelle Dam

Current Status

Last Updated: September 5, 2023

As of September 04, 2023, the Fontenelle Reservoir pool elevation is 6502.17 feet, which amounts to 91 percent of live storage capacity. Inflows for the month of August totaled approximately 73,922 acre-feet (af) or 114 percent of average.

August inflow to Fontenelle was higher than initially forecasted. Runoff has been unpredictable due to unsettled weather in the region throughout summer. Release rates are currently holding at 1,200 cfs and will remain at 1,200 cfs longer than initial predictions. Pending hydrology, release rates may need to decrease to approximately 1,100 cfs at the end of September.

The September final forecast for unregulated inflows into Fontenelle for the next three months projects near average conditions. September, October, and November Most Probable inflow volumes amount to 45,000 af (113 percent of average), 50,000 af (111 percent of average), and 45,000 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 pending time and location. Details on the meeting will be provided as we get closer to the meeting date. 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: 9/5/23