Optimal Flows for Cheeseman / Elevenmile - Mountain Buzz
 



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Old 01-12-2015   #1
 
Denver, Colorado
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Optimal Flows for Cheeseman / Elevenmile

Greetings mountainbuzzards!

Denver Water is planning on draining antero reservoir at the head of their southern delivery system. They are going to do some dam repairs to Antero. Plan is to completely drain the reservoir some time this year. Details aren't there yet... they depend on snowpack, reservoir storage etc.

I have lobbied Denver Water to consider recreational paddling flows as the reservoir is drained, but I would like some feedback from paddlers on what optimum flows are for the Cheeseman and Elevenmile stretches. I have never run either of these, but my memmory is that a range of 300-500 cfs might be a good range of flows.

What flows would you like to see? Whats the prime flow?

Thanks,
Ian

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Old 01-12-2015   #2
 
lookout mnt., Colorado
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haven't paddled either one yet so know nothing about flows but thanks for doing everything that you do Ian!
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Old 01-12-2015   #3
 
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I think 3-400 is best for Cheeseman, though according to whoever I talked to most recently about running it (Tom Janney I believe), it is a woody mess at the moment. If my memory serves right 3-600 is ideal for Elevenmile. Since many people will not run the class V put-in and take-out drops, a little more flow is ideal for rest of the run. I think 350-75 is probably optimal for both stretches. So ya, you're on the right track.
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Old 01-12-2015   #4
 
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Also, I can get out a flow survey if you think that will help solidify releases...
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Old 01-12-2015   #5
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Eleven Mile used to be in my back yard. 450 - 500 would be fantastic due to the smaller stream bed. I've run it at 600 and it was a blast. If you need any help hit me up Ian.
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Old 01-12-2015   #6
 
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I'd need to look at my book of zen, but I seem to recall "450-good, not worth it any lower." So there you have it, 600 to 900 in 11-mile would be about perfect, no lower than 450. Above 900 would probably get spicy!
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Old 01-12-2015   #7
 
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I have never ran it over 475 and that was a blast. I would think 400-600 over a longer period would be preferable to a bigger, shorter release.
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Old 01-12-2015   #8
 
Denver, Colorado
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Thanks for the input. Prob don't need a flow survey for this Evan. I just want to give DW a range of flows that enable good paddling as one of the many inputs they are working with. Sounds like the current plan is to drain June to August roughly. The main focus on this reach is fish management but we might be able to get some good flows. I'll keep you posted as it progresses.
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Old 01-12-2015   #9
 
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Boulder, Colorado
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Cheese levels

Yeah Ian!

You are the man, wish I lived closer than 5 hours.

350 is a good min for cheese (300 is still ok)

350-450 optimum

550 is on

Hope some people get in there, it has everything: great rapids, portages, scenery and a hike out to make you work for it, gotta love it.

-Tom
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Old 01-25-2015   #10
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Colorado, Colorado
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Antero Dam Rehabilitation Project | Denver Water
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