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Old 04-23-2011   #11
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Join Date: May 2005
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Aurora's water competes for space in Strontia Springs with Denver Water's:

Water is delivered to Spinney Mountain Reservoir through the Homestake pipeline for storage. As Aurora demand dictates, water is released from Spinney to the South Platte River for delivery to Strontia Springs Reservoir, in the foothills of the Denver metro area. Aurora owns 10% of the capacity of Strontia Springs Reservoir, or 700 acre feet; the remainder belongs to Denver Water.

My point is that even with little snow in the SF basin, it'll have Aurora's Pan-Ark water.

Originally Posted by deepsouthpaddler View Post
I didn't overlook the Aurora water supply. Its treated separately from Denver Water operations, and doesn't have any impact on roberts tunnel or north fork operations. Different players, different system, even though it goes through a portion of the upper south platte briefly. Denver waters main storage on the east slope is cheeseman, elevenmile, spinney and antero, which are all at the very southern end of the south platte basin.

Less storage in Antero would seem to also me more flow in the NF this year.

Originally Posted by El Flaco View Post
I know there are two more reservoirs in between (elevenmile and cheeseman), but I wonder what this means in the grand scheme of things. I would guess that with the dry conditions in the drainage that elevenmile & cheeseman can absorb the excess, but you never know....

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Old 04-25-2011   #12
Denver, Colorado
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Denver water turned down the tunnel to about 150 cfs today. Rain over the weekend dropped the need for tunnel water.

Denver water noted that water needs are hard to predict right now as it depends on where and how much rain hits denver metro, and what temps and weather does to the early small runoff.

Denver water be making adjustments as changes in weather and demand dictate. Keep an eye on the gauges.

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Old 05-05-2011   #13
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FRST, Colorado
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Ian... any word on the current situation? It is flowing 350 right now and we were wondering if we should expect (we know we shouldn't) this to last through the weekend.

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Old 05-06-2011   #14
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Looks like they just bumped Roberts Tunnel back up to 330ish. Any intel on whether it will hold for the weekend, especially Sunday?

Supposed to be really warm down here (lots of sprinkler systems turning on) so if that is why whater is moving then maybe it will continue?
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Old 05-07-2011   #15
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Denver, Colorado
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PSA: NF of S. Platte at Bailey up to 394 cfs...looks like it'll hold for Sunday I'd say.
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Old 05-07-2011   #16
Denver, Colorado
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Just got back from a week in the caribbean on the beach. Sorry for the lack of info for the past week. Denver water usually likes to hold flows for the weekend if they can, and lack of runoff combined with hot and sunny weather on the front range likely means they will keep flows holding for sunday.
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Old 05-09-2011   #17
Denver, Colorado
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5/9 update...

Denver water is holding the tunnel stead at around 375 cfs, with 400+ in the north fork. Great early season flows!

Should see flows stay at similar levels for the next couple of warm days. After that it depends on what cooler weather and potential rain does to demand.

Natural runoff has not really kicked off and hot weather in denver has caused high demand for water. As soon as natural runoff kicks in, tunnel water will likely slow down.

Denver water is trying to fill cheeseman reservoir, thus the low flows out of cheeseman. There is a lot of snowpack in the blue river drainage, and denver water is pulling from dillon throug the tunnel (and releasing into the blue) to drop dillon to prepare for runoff and deliver water to the front range.

Keep an eye on the gauges as things could be variable and day to day.
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Old 05-11-2011   #18
Denver, Colorado
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5/11 update

Denver water turned the tunnel to 200 cfs today. They dropped flows due to rain. Denver water didn't know what the future would hold as rain and weather is a big variable right now.
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Old 05-18-2011   #19
Colorado Springs, Colorado
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Ian, any word on flows tomorrow?
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Old 05-18-2011   #20
Denver, Colorado
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No word. I'll give them a call in the am tomorrow. Denver water is checking the numbers every am and making the call from there. At this time of year when the weather and rain is variable, its a day to day call.

If they do change flows tomorrow, they usually do it around 9-10 am. It takes about 2 hrs for flows to change from the tunnel to the run. If you put on around 9-10, you can get current flows.

Alternately, wait until you see the 10am gauge updates to make sure they aren't turning it down on you for a later run.

Good luck.

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