Skip Navigation

Fontenelle Dam Releases & Green River Flow Updates

1966 Telephone Island 2-512x219We will post upcoming flow changes as they become available, with the link to Fontenelle Dam daily release information.  Large boulders, rock sills and structures in the river bed pose a constant risk to boaters on this stretch of the Green.  High water has the potential to drastically alter instream characteristics, such as locations of gravel bars, riffles and holes.  Float times during high water can also be expected to decrease.  Low flows will reveal more obstacles for boats and longer float times.  Visitors should be aware of changing flows and the associated risks.  

August 25, 2015


Good morning,

Fontenelle Reservoir is at elevation 6498.1 ft (82% full).  The current rate of inflow is roughly 870 cubic feet per second (cfs), with recent daily averages ranging from 680 cfs to 870 cfs.  Weather conditions are expected to continue to be mild and dry and the Colorado Basin River Forecast Center has forecasted late summer reservoir inflows that are below average. 

Beginning Monday, August 31st, 2015, at 8:00 a.m., releases from Fontenelle will be decreased to 1,020 cfs according to the following schedule:

Date             Time    Initial Release          Change             Final Release

                       (MST)       (cfs)                     (cfs)                  (cfs)

08/31/2015      0800      1200                       -90                 1110

08/31/2015      1600      1110                       -90                 1020

After the final change at 4:00 p.m. on Monday, August 31st, 2015, releases will remain at 1,020 cfs until further notice.  All times identified in this notification are local time (Mountain Standard Time) and not hour ending.

It is currently anticipated that releases will be maintained at a baseflow of 1,020 cfs until Spring 2016. This is subject to change based on observed hydrology.

As a reminder, the next Fontenelle Working Group meeting is scheduled for tomorrow, August 26, 2015, at 10:00 am.  Please note that the meeting location has changed. The meeting will now be held at the Wyoming Game and Fish Department, 351 W. Astle Avenue, Green River, WY 82935. The Fontenelle Working Group is an open public forum for information exchange between Reclamation and other parties associated with the operation of Fontenelle Reservoir.

Your cooperation is greatly appreciated.


Thank you,

Lee Elizabeth Traynham, P.E.

Civil Engineer (Hydrology) 

Bureau of Reclamation


 Visit the Bureau of Reclamation's website to monitor daily Fontenelle releases at 

Last Updated: Aug 31, 2015
Return to main navigation