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Old 06-01-2011   #1
Crawford, Colorado
Paddling Since: 2006
Join Date: Jul 2010
Posts: 5
Gunnison River below Tunnel

Estimated Flows below tunnel

Plan accordingly, Flows have been steady 2500/2600 last couple weeks

Reclamation will be operating the Aspinall Unit to allow the one day Black Canyon water right peak target flow of 6,800 cfs to be met during the next two weeks. Releases from Crystal Reservoir will ramp up from the current release of 3,500 cfs beginning Friday, June 3rd. Crystal Reservoir should begin to spill sometime Saturday June 4th. While spilling, natural fluctuations will be seen in the river system making it difficult to predict and control downstream flows. However, below is a table showing estimated flows in the Black Canyon and Gunnison Gorge below the Gunnison Tunnel. These flows should reach a peak of about 6,800 cfs on June 8th and return to about 3,200 cfs around June 13th. During this operation, combined flows of the mainstream Gunnison, North Fork and other tributaries may result in flows of around 13,000 cfs in the Delta area. Again, this schedule is an estimate and may be modified due to changing hydrologic conditions in the Gunnison basin. Further updates will be conveyed as changes occur. If you have any questions regarding this operation, please contact Dan Crabtree or Erik Knight by replying to this email or calling 970-248-0600.

Date Flow below Gunnison Tunnel (cfs)
June 3 3,000
June 4 3,500
June 5 4,500
June 6 5,500
June 7 6,900
June 8 6,900
June 9 5,900
June 10 5,000
June 11 4,300
June 12 3,750
June 13 3,150
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