Aspinall Unit Reservoirs
(Last Updated: April 20, 2016)
Crystal Dam is currently releasing 1600 cfs with 1,100 cfs being diverted through the Gunnison Tunnel and 500 cfs flowing through the Black Canyon. The April forecast for the April-July period for Blue Mesa was reduced from March to 515 kaf (76 percent of average). Under the Aspinall Record of Decision, if this forecast volume is forecasted in May, the spring operational targets would fall into the moderately dry hydrologic classification. In terms of the Black Canyon water right, the peak flow target in the Black Canyon would be 3,197 cfs.
Crystal Dam operations are anticipated to maintain Black Canyon flows of 500 cfs until May when runoff conditions are expected to peak. At that time, spring peak operations will occur to provide a peak flow in the Gunnison River to attempt to meet the spring operational targets of the Aspinall ROD and also to meet the Black Canyon water right. Unregulated inflow into Blue Mesa during the month of March were 41,000 af (117 percent of average) and the reservoir elevation is 7487.9 ft and is increasing.
Inflows to Blue Mesa for the next three months are projected to be below average: with April, May and June forecasted inflow volumes of 55,000 af (71 percent of average), 161,000 af (73 percent of average) and 215,000 af (82 percent of average), respectively.
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.
The next meeting of the Aspinall Unit Working Group will be held on Thursday April 28th in the Grand Junction, Colorado at the Western Colorado Area Office (445 West Gunnison Avenue - Suite 221).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 ResourceMgr@usbr.gov for additional information.
Last Updated: 4/25/16