Here's the memo from Denver Water describing plans to resume bottom releases through the gates of the Dillon Dam:
Denver Water plans to increase Dillon Reservoir’s outflow as we test the reservoir’s newly-refurbished outlet works – the gates that control the flow of water released from the reservoir into the Blue River.
As early as today (1/27), we plan to begin increasing the outflow, which has been steady at about 110 cubic feet per second, by about 35 cfs each hour. During testing, which could last through the end of February, flows will fluctuate between 100 and 500 cfs.
The project, which restored the 50-year-old gates back to near-original condition, has relied on a temporary siphon system to make releases since late summer when the outlet works went out of service. The siphon system maintained outflows of about 100 to 110 cfs.
Denver Water and contractor Gracon Construction put the refurbished gates back into place in late December. The gates recently passed the first of two phases of testing, and now the facilities surrounding the outlet works – including the tunnel between the gates and the release point into the Blue River – are ready for the second phase of testing.
We are developing a plan to make a series of outflow increases with the need to protect the downstream fishery and structures in mind. These outflow changes are part of a rigorous testing regimen to ensure the gates meet high safety standards.
Increased outflows will also help us safely prepare for the upcoming spring season by lowering Dillon Reservoir’s elevation to create more space before runoff begins.
The temporary siphon system will remain available as a backup until the gates pass these operational tests. We look forward to completing this project soon and returning to normal operations using the outlet works – after they are carefully and thoroughly tested.
If you have any questions, please don’t hesitate to contact us.
Dana Strongin | Public Affairs
Denver Water | t: 303-607-3132
Share this post:
"Many men go fishing all of their lives without knowing that it is not fish they are after."
Henry david Thoreau
"Brandon was an excellent guide and did a great job coaching my son Ian on fly fishing technique."
Michael J Armstrong
"The charm of fishing is that it is the pursuit of what is elusive but attainable, a perpetual series of occasions of hope."
"Can't say enough about how you and your very helpful staff made our trout fishing visit to Silverthorne one of the best trips I've ever taken."
Mike McRaney, Brig.Gen. USAF, Ret.
You can't buy happiness but you can buy a fishing pole, and that's pretty much the same thing.