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View Full Version : Norris Dam Sluicing ???


joetroutman
01-23-2013, 12:07 AM
So the TVA website says that Norris dam will be sluicing till further notice, does this mean it will be pushing about 16000 cfs or is it going to be more like the soho in early December?

Rockyraccoon
01-23-2013, 12:40 AM
It means 16000 cfs will be rolling down the river. Dangerous for sure.

MadisonBoats
01-23-2013, 07:44 AM
Yeah, this is probably one of the most dangerous times to be out on the river. Believe it or not; I have seen several boats out all week. Last year there were 2-3 accidents during one of these flows.

The water is up past the handicap parking spots at Miller's Island and spilling over the bottom edge of the small fishing concrete pier at the weir.

Please do not try and get out in this type or flow. There is no margin of error for mechanical failures, etc.

waterwolf
01-23-2013, 07:53 AM
No wading unless you are very tall and strong.

joetroutman
01-23-2013, 06:35 PM
Unfortunately that is what I figured. I'm not one to mess with the power of water so it looks like I will be tying some flies to satisfy my fishing itch.

Madisonboats, you have any pictures of how high the water is at miller's island that you can post, I would be interested in seeing them.

MadisonBoats
01-23-2013, 08:01 PM
Madisonboats, you have any pictures of how high the water is at miller's island that you can post, I would be interested in seeing them.


You know it...:smile:
Observed Data [TVA Website]

Day Time 1/23/2013 11 pm
Reservoir Elevation 1,011.53
Tailwater Elevation 830.12
Average Hourly Discharge*15,559 CFS

https://sphotos-a.xx.fbcdn.net/hphotos-ash3/67922_364096590355585_1622296778_n.jpg
https://sphotos-a.xx.fbcdn.net/hphotos-snc7/397979_364096540355590_1686852608_n.jpg
https://sphotos-b.xx.fbcdn.net/hphotos-ash3/558457_364096543688923_1778553640_n.jpg
https://sphotos-a.xx.fbcdn.net/hphotos-frc1/734465_364096547022256_990874668_n.jpg

Maurer
01-24-2013, 01:50 PM
Wow, thanks for the pics Shawn, I wonder if that little cabin on the small side of Millers is okay, it seems really close to the water!

bigsur
01-24-2013, 05:46 PM
Here is downstream at 6 PM at the Church on Jan 23,2012 at 15,000 CFM plus. Look at the base of the tree on the right hand side to see my good friend from summer still working the bank. Those of you familiar with that area know that bank drops off six feet or more below that tree line. Man his feet gotta be cold!

http://i1168.photobucket.com/albums/r487/bigsur06/DILLSBORO%20NC%20DELAYED%20HARVEST%202012/clinchat15000CFMegert_zpsd17198bb.jpg

joetroutman
01-24-2013, 07:38 PM
those pictures are amazing thanks guys.

MadisonBoats
01-25-2013, 07:48 AM
Unfortunately for Clinch Fishermen; the word through the channels is that it is going to be running high for a few weeks.:frown:

kentuckytroutbum
01-25-2013, 02:16 PM
Geez.....
I think that even Noah, in his ark, would be impressed!

Bill

MadisonBoats
02-04-2013, 07:48 AM
Looks like TVA is going to have to push the release rate up even higher on Tuesday.:eek:

Predicted Data

Day Average Inflow* Midnight Elevation* Average Outflow*
2/04/2013 9,850 1,012.29 18,175
2/05/2013 7,593 1,011.46 20,500

joetroutman
02-04-2013, 07:53 PM
The fish are sure getting there workout in fighting that flow, maybe this is a sign I need to hit the gym too.

flyman01
02-04-2013, 08:32 PM
Unfortunately, there are no tail water streams exempt from the sluicing or spilling at this time and for the immediate future. Additionally, I am sure that these high volume flows over a longer duration of time will result in some level of scouring which certainly could impact some of the entomology of these streams. I am hoping for the best.

No Hackle
02-04-2013, 10:23 PM
Maybe if will wash some of the rock snot out. Gotta think as the glass half full.Lynn

waterwolf
02-04-2013, 10:25 PM
The fish are sure getting there workout in fighting that flow, maybe this is a sign I need to hit the gym too.

Actually there is less current when the river gets this high. I know it makes no sense, but when the river gets up in he trees it creates huge eddies and the current down deep is not as bad as when it is dropped back down inside the normal channels.

The fish will be fine, and generally the fishing after these years is outstanding. If it quits raining :biggrin:

MadisonBoats
02-06-2013, 08:04 AM
Actually there is less current when the river gets this high. I know it makes no sense, but when the river gets up in he trees it creates huge eddies and the current down deep is not as bad as when it is dropped back down inside the normal channels.

The fish will be fine, and generally the fishing after these years is outstanding. If it quits raining :biggrin:

I agree that this could actually help the trout. The only negative is that many of the Redds will be affected by the higher water, temperature, etc. and may not incubate at a successful rate. But, that is a whole other topic.

Here are some new pictures from Tuesday, 2/5 with the cfs rate at 20,500.

https://sphotos-b.xx.fbcdn.net/hphotos-snc7/600782_372847579480486_98222501_n.jpg
https://sphotos-b.xx.fbcdn.net/hphotos-snc7/382203_372847606147150_844545805_n.jpg
https://sphotos-b.xx.fbcdn.net/hphotos-prn1/604105_372847582813819_695271374_n.jpg
https://sphotos-a.xx.fbcdn.net/hphotos-prn1/149423_372847519480492_157157559_n.jpg

o2bfishin
02-06-2013, 10:35 AM
Wow, MB! :eek: Those pictures sure help explain why the tree trunks floating down river look like an Oak Ridge rowing regatta! While I agree with Waterwolf that the fishing normally improves after things settle down, I'm not so sure about the current being less. It's really cookin' here in Clinton! Almost looks like fast water going through a riffle. I may have to try out the video on my new camera.;)

Pat

Wilson10
02-06-2013, 06:12 PM
http://i332.photobucket.com/albums/m327/AdamWilson10/Currents.png

Waterwolf was correct about the currents of the river during high generation schedules like we're seeing on the Clinch. There is so much water moving down river that rocks and other objects cause "pockets" or other areas of slower moving water. Similar situations happen on smaller rivers during floods.

One thing I've learned over the years is that this much generation doesn't cause harm to the trout. The fishing does tend to be pretty hot after long periods of generation and the fish are pretty feisty.

Sorry for the lame illustration :)

Rodonthefly
02-06-2013, 07:15 PM
I tend to like your artistic style Mr.Wilson. Tasteful yet simple :biggrin:

waterwolf
02-06-2013, 11:39 PM
Madison you are right about the redds, hopefully they hadn't started when the gates opened, and if they haven't than maybe they will be alright. Good news is with the feeder creeks running high I bet they are stacked with spawners.

Wilson, I like your drawing.

MadisonBoats
02-07-2013, 07:01 AM
Actually,
The fluid dynamics are more like this illustration.:smile:

Also; if you look up/down stream right now you can notice a visible crown in the river due to the high volume/flow rate.
https://sphotos-a.xx.fbcdn.net/hphotos-ash3/580678_10151529802563319_1188340002_n.jpg

o2bfishin
02-07-2013, 08:05 PM
Gentlemen, I'm impressed with the artwork! Thanks for the lesson. We'll just have to hope for the best regarding the redds.

kentuckytroutbum
02-07-2013, 09:19 PM
Shawn-

You got the laminar flow dead on. Makes it difficult to get a "dead drift" when you're running a dry/dropper set up. Also, the eddies can drive you nuts when your fly starts going upstream, and the trout are facing downstream.

Thanks for the illustration.

Bill

joetroutman
02-11-2013, 08:48 PM
My joke turned into a very useful lesson thanks guys.

Wilson10
02-12-2013, 02:18 PM
Anyone heard when TVA is gonna slow her down?

My assumption would be March

waterwolf
02-12-2013, 06:33 PM
Anyone heard when TVA is gonna slow her down?

My assumption would be March

Watch the flow curves and when they get it back inside the curve they will back it down

MadisonBoats
02-13-2013, 07:53 AM
Watch the flow curves and when they get it back inside the curve they will back it down

Yeah; this about the best way to get an general idea. Then; you have to look at the upstream inflow data and take in account the amount or rainfall, etc.

Also; the water table is higher at the moment and they have to slowly cutback as to not create erosion problems.

I would expect that 1,000-1,002 would be a comfortable level for them to let up if we do not receive more abnormal rain events. It is starting to get closer to Mid-March when they need to focus on maintaining an adequate lake level to make it through statistically lower summer rainfall levels.

Dan the Fly Man
02-19-2013, 11:24 AM
Yeah; this about the best way to get an general idea. Then; you have to look at the upstream inflow data and take in account the amount or rainfall, etc.

Also; the water table is higher at the moment and they have to slowly cutback as to not create erosion problems.

I would expect that 1,000-1,002 would be a comfortable level for them to let up if we do not receive more abnormal rain events. It is starting to get closer to Mid-March when they need to focus on maintaining an adequate lake level to make it through statistically lower summer rainfall levels.


I checked online today and it seems that the reservoir elevation (assuming that's what you were referring to) is nearing that 1,000 ft mark. The outflow is also projected to slow the next couple days.

Does this mean fishing soon or am I getting my hopes up prematurely? I know we're supposed to get a little rain this week as well so that may impact these projections some.

Thanks,

Dan

MadisonBoats
02-19-2013, 07:14 PM
I checked online today and it seems that the reservoir elevation (assuming that's what you were referring to) is nearing that 1,000 ft mark. The outflow is also projected to slow the next couple days.

Does this mean fishing soon or am I getting my hopes up prematurely? I know we're supposed to get a little rain this week as well so that may impact these projections some.

Thanks,

Dan

Dan, I am really not sure. I figured it would have started to cycle down quicker than it has...

That being said and looking at the overall tributary system operating guide; I would expect the operational level would reach normal levels by next Thursday or so...

However; I do think the current TVA operating data could be skewed by the last decade of maintaining higher-winter pool levels.
http://lakeinfo.tva.gov/htbin/genplots?guidecurve+79

waterwolf
02-19-2013, 11:20 PM
One thing another poster here reminded me of today, is that TVA is going to be fixing the weir this spring and is going to draw the lake lower so they don't run into issues if we get heavy spring rains while they can't run much water.

I think they may take the lake to around 1080 or even lower before laying off the gas, but that is just an opinion based on the weir construction.

bigsur
02-20-2013, 04:01 PM
Here is a shot from sunset on Valentine's Day 2013 at the Weir dam, uhhh.... so wading is out?

http://i1168.photobucket.com/albums/r487/bigsur06/FEB%2014%202013%20WEIR%20DAM%20CLINCH/58e30ef9-2a61-4d32-9b66-180440b216a9_zps7cac97d0.jpg

Thunderhead8
02-20-2013, 10:52 PM
Here is a shot from sunset on Valentine's Day 2013 at the Weir dam, uhhh.... so wading is out?

http://i1168.photobucket.com/albums/r487/bigsur06/FEB%2014%202013%20WEIR%20DAM%20CLINCH/58e30ef9-2a61-4d32-9b66-180440b216a9_zps7cac97d0.jpg

I guess you weight your nymph with an old engine block from a Caterpiller D9

stevee71
02-24-2013, 04:58 PM
Looks like they finally are going to shut of generation tomorrow but it is in the middle of the night :mad:

MadisonBoats
02-25-2013, 07:34 AM
Looks like they finally are going to shut of generation tomorrow but it is in the middle of the night :mad:

One thing to note is that TVA still needs to make power and that is done during the highest usage times. Once it gets closer to the Mid-March timeline; they will have to focus on summer pool retention levels. Of-course this depends on whether or not we get any abnormal rain events.

I know I am ready for some CFS downtown to get the dust off my gear.:biggrin:

stevee71
02-25-2013, 09:01 AM
One thing to note is that TVA still needs to make power and that is done during the highest usage times. Once it gets closer to the Mid-March timeline; they will have to focus on summer pool retention levels. Of-course this depends on whether or not we get any abnormal rain events.

I know I am ready for some CFS downtown to get the dust of my gear.:biggrin:

Me to I am about to go stir crazy.:biggrin: