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Old 05-08-2013   #1
boulder, Colorado
Paddling Since: 95
Join Date: May 2011
Posts: 93
NSV proving grounds (buttonrock) wed 5/8

I just noticed that NSV jumped over 250 anyone feel like some elfing this afternoon I would love to get in my boat. Give me a call or text if you are down Josh@ 530-308-5771

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Old 05-08-2013   #2
Denver, Colorado
Paddling Since: 2004
Join Date: Apr 2004
Posts: 3,097
Doubt it's running. St vrain in Lyons is 250, nsv will be much lower. No online gauge on nsv either.

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Old 05-08-2013   #3
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Join Date: May 2005
Posts: 614
Some sources say take Lyons and subtract this gage to get NSV:

Data Provider Detail Graph

I haven't found an official location for that South Branch gage.
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Old 05-08-2013   #4
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Boulder, Colorado
Paddling Since: 2003
Join Date: Oct 2003
Posts: 2,032
Wow, where the hell is that gauge?

We used to use middle st. vrain + south st vrain near ward - left hand diversion to get a rough idea of what's in SSV.

I might add that the Proving Grounds is an alright run in my opinion, but many people have had horrible experiences because they do it too low. I did it around 400cfs and that felt a pretty good minimum to me!
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Old 05-08-2013   #5
Denver, Colorado
Paddling Since: 2004
Join Date: Apr 2004
Posts: 3,097
Incorrect beta cadster. St vrain suffers from lack of information due to gauges in poor locations and gauges that were turned off.

Kevin's ssv estimate is a relative correlation from higher elevation gauges but is a low estimate of what's in ssv and a rough correlation. It's the best online info for ssv boaters who don't have a visual stick reading.

Ssv used to be estimated by subtracting nsv below button rock from st vrain at Lyons, but they turned off that nsv gauge. There is no good way to estimate flows on nsv below button rock when it is filling due to no gauge. Gotta talk to the water guys and see what they are releasing. Once button rock fills what comes in must go out, and there are two gauges on nsv above button rock.

Proving grounds is below button rock, so no gauge.

Not sure what south brach is, but I think it's a small low elevation trib, not to be confused with south saint vrain.
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Old 05-08-2013   #6
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Denver, Colorado
Paddling Since: 1996
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Gauge geeks become more valuable every year.

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