2014 dissolved oxygen thread

Figured it would be a good idea to have one thread for the summer to monitor fish kill awarness so its easier to keep all info in one place.

I will try to update it around the end of each week until the turn over.

I think last yr is as close as you can get to not having a MAJOR kill. Remember we had a couple weeks of 0.0 DO and still managed to squeeze by.

Feel free to post your own observations.

It looks like we are ahead of schedule this yr compared to lasr yr. At least they arent running water alot this year (yet anyways)

2013 Numbers for this week last yr

This weeks

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

Definitely a correlation to the river level, IMO. It has been averaging 350cfs when its typically about 1500-200cfs. Made the striper fishing in the river a lot more difficult but all the fish are fat and healthy.

Proverbs 3:5-6

Where we were this week 2013

Seeing a big up/down trend this yr. Could this be why some people have seen the bite die off a little over the past week??? Some days it appears the DO is rising or falling a whole point from 3.5 to 4.5. Or could this be caused by the super moon we are having??? It seems to be jumping the most during as we reach the complete full moon.

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

Highly doubt that the moon has anything to do with DO levels. Haha. More likely it is there generation schedule as you are looking at the bottom readings. Do you get a copy of the oxygen depth profile from the towers? They give a O2 profile every foot. You can really see the squeeze later this month and really in august.

Thats the weird part. They havent generated aanything over 715CFS in the last 2 weeks. Maybe even 3 weeks. (This has really affected the river bite as well). From what we gathered last year this “bottom” reading is at a depth of 70 or 80’ (where they pull water out of the lake to generate) and not the actual bottom of the lake.

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

Chip,

I think the bottom reading is much deeper than that. I will have to check my history.

I’d like a link to where Bioguy gets the oxygen depth profile.

Rick K

Rick, I thought so too, but I stopped by USGS office over off Greystone Blvd last year and asked them where that reading was coming from. I forget exactly, but it was somewhere in the 80 ft range at full pool.

I remember posting after I talked to them, I’ll find it.

'07 198 DLX Carolina Skiff
FS90 Suzuki

I know it has to be getting close to dropping soon. The surface temp is reading almost 90 degrees in some of shallows and 86 in the big water as of yesterday. Hopefully the polar vortex will save us!

2007 TRITON 225CC
“Trailer Trash”

Really? Polar vortices are weaker during summer and strongest during winter. Why would you think that Polar Vortices would impact the oxygen levels in Lake Murray?

Rick K

Rick, was just making a joke about the fall in temp’s this week.The weather guys had such a big time with it over the winter and I had heard one of them mention it again the other day that it seemed funny to me. Definately no science there with me!

2007 TRITON 225CC
“Trailer Trash”

Funny you mention that because a meteorologist was on the news this morning discussing polar vortexes. Many are falsely calling the cold front that is sweeping down a polar vortex. It is really just a big low pressure that is related to the typhoon that hit japan. But he did show a typical polar vortex, it is supposed to be a tight circle at the poles. With the warming of the poles they are unstable and big sections of cold polar air are breaking off and pushing south. He said meteorologists fear it is going to have a major impact on our climate. It is the cause of the drought in the west and the massive cold snaps last winter. Sorry for rambling, I just find things like this interesting. And it certainly could effect our fishing.

Wellcraft V-20 sportfish with a 200 Evinrude

Ice fishing in the south? ha!!!1

2007 TRITON 225CC
“Trailer Trash”

Has the thermocline set in yet? Headed out for night fishing tomorrow night…just curious.

David Padgett
“Take 2”
191 Mako

As of last weekend no. And from the reports on wed I would still say no. Plus with this polar vortex we had thus week doubt it will for a little while… knock on wood but this could be an easy summer on our fishery. The longer it takes the better it is for the fish.

Also the shorter the time period it is in place the weaker the turnover will be putting less stress on the fish during the turnover

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

This week I also checked water temps just for comparison. Not gonna post graphs or anything but as of right now there is a fairly large difference (by water temp standards) between this/last yr. This is prob why we haven’t seen a thermocline yet.

2014 Top temp Bot temp

  •  82.4   /   56.3
    

2013 Top temp Bot temp

  •  85.6   /   60.8
    

This week 2013

Current level 2014. Think the sensor must have been throwing inaccurate reading or something. (Look back at last week and the sensor was jumping all over the chart) sometimes more than a whole point in a very short period of time. Either way it is back on and reading seem to be a little more normal

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

This week 2013

This week 2014

This was the first week in a long time SCEG actually ran water in the saluda. They turned it on for a real short period on wed then turned on again thurs and let it run through this morning. (Striper should be on fire this weekend down there). Also water temps are creeping back up. Overall compared to last year we are looking pretty good.

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

Last year we had a significant amount of rainfall and only had a handfull of days that were above 90 degrees. We had more days in June above 90 than we did all last summer and not nearly the rainfall.

The rainfall is what made it tough on us last year almost causing a kill. The lake was rising so fast SCEG had to run water like crazy sucking the DO out of the lake. Here is the waterflow graphs from last yr this yr. Crazy

Last yr

This year

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

We are still looking good…water temp this morning while I was out was 80.0,

Last year

This year

“All fisherman lie. And if they say otherwise, then they’re lying”

“Sea~N~Stripes”
21’ Hewes Craft Custom
115 Evinrude

I was out last night and the surface temp was down to 79* in the big pool. Fish were thick up on a 25’ hump. The were not interested in biting but they were there. Not typical for early august, fish should be in good shape this year.

Wellcraft V-20 sportfish with a 200 Evinrude