Aspinall Unit Reservoirs

Blue Mesa Reservoir

Current Status

Last Updated: August 7, 2019

Aspinall Unit Reservoirs – As of August 6, 2019 releases from Crystal Dam are approximately 3,100 cfs. Uncompahgre Valley Water Users Association is diverting approximately 1,150 cfs through the Gunnison Tunnel and flows in the Black Canyon are about 2,350 cfs.  Releases from Crystal are in gradually being reduced as inflows to Blue Mesa steadily decrease. By Thursday, August 8, 2019 releases from Crystal will be set to approximately 2500 cfs and will likely remain at this level for the next 2 weeks. 

Blue Mesa did fill this year and achieved a peak elevation on July 25, 2019 of 7519.15 feet above sea level which corresponded to a storage content of 827,000 af (99 percent of full pool). Since this peak filling, Blue Mesa's elevation has declined to 7517.28 feet above sea level on August 8, 2019.

The unregulated inflow volume in July to Blue Mesa was 282 kaf (241 percent of average).  Unregulated Inflow volumes forecasted for Blue Mesa for the next three months (August, September and October) are projected to be: 88,000 af (140 percent of average), 53,000 af (140 percent of average) and 47,000 af (124 percent of average), respectively.  The August 24-Month Study is reflective of these new forecasts.  The water year unregulated inflow forecast volume for 2019 is 1.361 maf which is 143 percent of average.

The Aspinall Unit Working Group is an open public forum for information exchange between Reclamation and the stakeholders of the Aspinall Unit. The public is encouraged to attend and comments on the operations and plans presented by Reclamation at these meetings. Meeting notes from past working Group meetings are posted on the Working Group webpage. For more information on this group and these meetings please contact Erik Knight in the Grand Junction Area Office at (970) 248-0629.

Meeting notes from past working Group meetings are posted on the Working Group webpage at:

The next meeting of the Aspinall Unit Working Group will be held on Tuesday, August 15, 2019 at 1:00 pm at the Elk Creek Visitor Center at Blue Mesa Reservoir.

To view the most current reservoir elevation, content, inflow and release, click on: Blue Mesa Reservoir Data or Crystal Reservoir Data. To view minutes from the last Aspinall meeting, click on: Meeting Notes.


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

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Last Updated: 8/7/19