South Platte Weekend Flow Update - Mountain Buzz
 



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Old 05-15-2008   #1
 
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South Platte Weekend Flow Update

Denver Water will be relaying info about NF and probably SF projected flows again this year. I'll be using this thread for the rest of the season to post the most recent beta. Flow projections are estimated and not guaranteed, but have proven generally accurate in the past.

For this weekend...

"I cut the Roberts Tunnel today to 100 cfs. I plan to keep it at 100 cfs over the weekend. I may shut it off next week if the warm weather predicted for the next several days finally melts some snow. I will probably cut Cheesman outflow to around 200 – 250 for the weekend. As always, this is all open to change and based on the very unpredictable weather we have been having so far."

This means Bailey is likely to be runnable, but probably in the bone zone (160-170) based on recent natural runoff, unless the warm weather generates some more water.

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Old 05-16-2008   #2
 
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do you think denver water will keep flows out of the roberts tunnel down until runoff is over
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Old 05-16-2008   #3
 
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The general pattern is that there is less water released when natural water (from any source) is making its way to the Front Range reservoirs. So, yes, less water during runoff, but it's somewhat beside the point because runoff is everywhere and the Tunnel only feeds Bailey, Foxton and Waterton. As runoff tapers, the releases tend to increase - but there is a great snowpack this year, so the NF will not have the best season. Historically, the best NF seasons are during drought when there is no other source of water for Denver.
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Old 05-29-2008   #4
 
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Bony on the NF

Forecast for this weekend...

"The tunnel should be in the 100 – 200 cfs range over the coming weekend. Cheesman should be around 200 cfs. Still waiting for the snow to melt!"
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Old 06-20-2008   #5
 
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NFSP flows from DWB for this weekend

"We will continue to run the tunnel hard over the weekend – I expect around 400 cfs each day. The runoff finally seems to be picking up, so I may not need these high tunnel flows much longer."
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Old 08-01-2008   #6
 
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Any update for this weekend?

Just wondering if you had any info on flows for this weekend? Looking to hit Foxton on Sunday but the level seems to be consistently dropping over the last few days.
Thanks!
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Old 08-15-2008   #7
 
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From DWB today:

"The Roberts Tunnel will likely stay at its current rate of around 275 cfs for the weekend. We will probably cut it first thing Monday Morning to between 75 and 200 cfs."

Then again, it's raining all weekend...

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Old 08-21-2008   #8
 
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From DWB today:

We have the tunnel off while we are lowering Cheesman for a project this fall. I don’t expect to have the tunnel back on this weekend. I may run it the following 2 weeks, but will then shut it off for about a month starting September 7.
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Old 09-05-2008   #9
 
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Looks like the end of the season...From DWB this morning:

"We are draining the tunnel now for some maintenance work that will extend through September. We will run the tunnel later this fall, and probably this winter, but at lower flow rates. There may be a brief window of flows in the 200 cfs range in October, but that would be it.
Hope everyone enjoyed the high flows this year. Keep your fingers crossed for a good snowpack this winter."
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Old 10-02-2008   #10
 
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I've asked for a flow prediction, with the tunnel running again. I'll post when I hear from DWB. My guess is that it will be a short window for the water, and then back to the mountain bikes.
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