GCPBA RiverNews - January and February Flow Forecast Cut
Beginning on January 10, 2012, releases from Glen Canyon Dam will be reduced to an average daily release rate of approximately 12,900 cfs. Hourly releases after this change will continue to fluctuate for power generation. These fluctuating releases will be scheduled through Western Area Power Administration to be consistent with the Glen Canyon Dam Operating Criteria (Federal Register, Volume 62, No. 41, March 3, 1997). Peak daily releases from Glen Canyon Dam are anticipated to be approximately 17,500 cfs while daily low level releases will likely be near 9,500 cfs.
Some variation in hourly releases may occur for the purpose of system regulation or for calls on reserve generation. These variations are anticipated to be infrequent and short lived.
This release reduction is being made in order to reduce the monthly release volume from 1000 kaf to a new volume of 850 kaf. Hydrologic conditions in the Colorado River Basin have been very dry and recent forecasts indicate that the annual release volume will be much lower than previously projected.
We anticipate the release volume for February 2012 will be approximately 650 kaf and this will be confirmed near the end of January.
This notification supersedes all previously issued notifications and is current until a new notification is issued. All times identified in this notification are local time (Mountain Standard Time) and not hour ending.
If there are any concerns or questions regarding these operations, I can be reached at 801-524-3710.
This is from Rick Clayton Hydraulic Engineer/Glen Canyon Dam Upper Colorado Region Bureau of Reclamation (801)524-3710, posted here by GCPBA.
GCPBA Newswire and RiverNewsNotes are a service of Grand Canyon Private Boaters Association - the leading voice for non-commercial Canyon river runners since 1996 - Ensure the ability for all to obtain an opportunity to experience a float trip through the Grand Canyon while protecting the resource. - Grand Canyon Private Boaters Association