#802790 - 06/30/08 01:38 PM
Caney Fork: BIG Silt Plume from Dam Repairs
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B.D.
8 Point
Registered: 03/24/08
Posts: 1484
Loc: Hendersonville TN
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Yesterday morning there was a HUGE silt plume in the upper river, coming in by the ramp near the dam on river left. It extended downriver for over a mile, nearly all the way to "big rock." It appeared to be runoff from the grouting work being done up above. We got a little rain overnight, but not that much. I am worried what the Caney would look like after a real downpour. Can't be good for the trout.
The 11:00 a.m. generation pulse cleared it out, since we didn't get any more rain after 7:00 a.m. or so.
The huge volume of silt makes me suspect that there is a breach in a silt fence somewhere, or maybe an inadequately-fenced spot. This is a view of the river at the head of the silt plume - the silt is entering the water from a cement drainage culvert on the downstream side of the ramp.
If there's a breached silt fence, I'd like to send an e-mail to somebody to see if it can be fixed before we get a day of heavy rain and blow out the whole river. Anybody know who should get the heads-up? TDEC? Bob Snead and/or the Corps? Someone else? If anyone has any contacts on this, PM me and I'll follow up.
bd
Edited by Brian Dunigan (06/30/08 01:38 PM)
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#802834 - 06/30/08 02:20 PM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: B.D.]
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rsimms
8 Point
Registered: 09/08/02
Posts: 2489
Loc: Chattanooga, TN
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I don't know which office handles that area, but it would be a TDEC issue... Division of Water Pollution Control I believe. I suspect the state might be limited in it's influence of a federal project, but I'm sure any kind of "buzz" in the hornet's nest might help. Especially since you have photographic evidence. That breaks my heart to see the Caney run brown. 
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#803299 - 06/30/08 09:19 PM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: mike243]
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smstone22
16 Point
Registered: 01/11/04
Posts: 16264
Loc: Allardt, TN
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Not good at all for the trout.
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#803324 - 06/30/08 09:28 PM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: smstone22]
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mike243
14 Point
Registered: 09/06/06
Posts: 9820
Loc: east tn
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Not good at all for the trout.
thats true for all the fish the saving part for the rivers below the dams are the generators,when they kick on it helps clear it up faster than a river with no other water increase,i dont know how many ppm. it takes to affect the fish for what length of time but it does make ya wonder when you see it all brown.i havent seen of any mass dieoffs due to muddy waters but i do know it happens,mike243
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#803434 - 06/30/08 10:08 PM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: mike243]
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gil1
12 Point
Registered: 04/06/07
Posts: 6120
Loc: Nashville, TN
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I will send this link to Bob Sneed.
Edited by gil1 (06/30/08 10:09 PM)
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#803650 - 07/01/08 06:08 AM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: gil1]
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captain hook
10 Point
Registered: 11/20/07
Posts: 4340
Loc: Knoxville
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Silt is not a major issue in any of our tailwaters, if anything they could use a little. 2 generators does an awfully good job of cleaning out the system on a daily basis.
The Clinch will turn black after heavy rains from all the mud as will every other river in this state if it rains enough. No big deal and just part of run off.
Now if it is a problem with a silt fence then there is an issue.
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#803933 - 07/01/08 09:20 AM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: gil1]
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gil1
12 Point
Registered: 04/06/07
Posts: 6120
Loc: Nashville, TN
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I will send this link to Bob Sneed.
Got this reply from Bob...
----- Original Message -----
From: "Sneed, Robert B LRN" <Robert.B.Sneed@usace.army.mil>
To: "Gil Lackey" <gillackey@bellsouth.net>
Sent: Tuesday, July 01, 2008 7:42 AM
Subject: RE: Silt Problem on Caney
Gil:
Thanks for sending the link. Frank Fiss had sent me a message on this
yesterday and I have asked our Construction folks to check it out. I'll pass
along info when I know more.
Bob
_________________________
"May you live all the days of your life." - Jonathan Swift
I'm a Pope & Young Official Scorer - I'd love to score your critter - no charge.
I conduct professional game camera seminars.
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#804047 - 07/01/08 10:27 AM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: gil1]
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bowriter
Non-Typical
Registered: 08/31/02
Posts: 40303
Loc: Lebanon,TN USA
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My memory, faulty as it is, tells me this is not the first time this has happened. I seem to recall a couple other incidents of this. As Hook said, this is not all bad if it is not a regular occurence or a fault somewhere along the line.
The single best day I ever had fishing the Caney-both for size and number-was a day the water was almost muddy from siltation runoff. I believe we had 11 trout over 5 pounds. But that is neither here, nor there if this is siltration fence problem.
_________________________
Constipation has ruined many a good day. Not as many as stupidity, though.
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#804171 - 07/01/08 11:42 AM
Re: Caney Fork: BIG Silt Plume from Dam Repairs
[Re: bowriter]
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B.D.
8 Point
Registered: 03/24/08
Posts: 1484
Loc: Hendersonville TN
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A little silt might not do that much harm, though I'd disagree that the tailwaters "could use a little." As a general rule, the less silt, the better. The silt plume Sunday morning was so dense, and for such a long distance, that it was definitely a bad thing.
The brook trout in particular have a very low tolerance for heavy silt. It doesn't make any sense to dump 20,000 of them in and then kill them with mud.
bd
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mike243
