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I know they are testing the Granite dam feature Mon-Thurs. but the water is up early. It this going to hold through the weekend? Or is it going off for the weekend and on again on Monday? thanks!
 

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The water order from the BOR says to "hold the release until further notice" which leads me to believe they will hold it steady until after the testing is done on Thursday the 21st. Twin Lakes are still totally full so there is plenty of water to be moved....
 

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Jennifer and Logan - What's the flow? All the USGS gages are either iced or seasonal and I can't get the Wellsville gage to load (assuming the water's hit it yet...).

Thanks,

-AH
 

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Jennifer and Logan - What's the flow? All the USGS gages are either iced or seasonal and I can't get the Wellsville gage to load (assuming the water's hit it yet...).

Thanks,

-AH

The wellsville gauge as of right this minute is 603 CFS, it jumped up yesterday morning from 380 in about 20 minutes.
 

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The link provided by Stewart has all the water gauges in every basin in Colorado. The USGS shuts theirs off at the same time every year, but the DWR gauges and those owned by local water conservancies generally stay on year round.

Right now you want to use the Granite gauge (not below Granite) plus Clear Creek below Clear Creek Reservoir for flows in the Numbers for 355 cfs.

The Salida gauge is the closest to Browns Canyon, but it does include a couple very small streams and some ground water recharge so I would subtract about 20 cfs giving us approximately 575 cfs in there....

and for the Gorge I would use the Canon City gauge, but add about 10-20 cfs for the diversion at the west edge of town. That means flows are about 600 in the Royal Gorge.
 

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Sounds good. Thanks y'all! Doesn't look like quite enough to entice me to get the raft out for a late-season Brown's run this weekend, but I appreciate knowing what it is.

That said, will the sudden jump in flow impact the fishery or have negative effects? The only natural thing that kind of jump mimics is a flash flood. Hopefully when the testing ends they'll ramp the flow down gradually to be more in line with a natural flow decrease.

Thanks again,

-AH
 

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The brown trout spawn should be done for the season. A 250 cfs bump shouldn't effect anything negatively since the flow was already so low. The only real problem would be a flushing flow that would scour the eggs from the gravel bars. The BOR is starting "winter water operations" so it's likely there will be supplemented flows off and on through-out the winter... not to mention the testing that was done on The Silver Bullet in November a few years back. The flow was bumped up to like 1100 and it had no negative effects on the fishery.
 
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