FYI

[fishinwrench]

4 hours ago, motoman said:

I wonder if fish get ‘trapped’ in a similar fashion to carbon monoxide poisoning in humans. Not the kinda thing that’s easily detected; just kinda start getting sleepy and it’s downhill from

there?

Good thought.  Highly possible.

That being the case, what keeps them above the thermocline ?  And why aren't there fish kills on a daily basis in tailwaters where the DO takes huge temporary deficits ?

[MOPanfisher]

Most tailwaters have enough regular flow to prevent much of a thermocline or at least mix the water.  A fish has no clue that better water is a 100 yards away, imagine if a cloud of invisible poisonous air decended around you, you would have no clue which direction you could go to get out of it, and a fish has little  no reasoning power.  

The majority of fish kills in lakes there is little or nothing that can be done, it simply has to run its course.  BUT the next one reported might be because a golf course dumped 40 gallons of old herbicide not realizing the drain empties directly into a small creek and then into the lake and killed a few thousand fish, that would be something to be investigated even if only to make sure it doesn't happen again.

[fishinwrench]

1 hour ago, MOPanfisher said:

BUT the next one reported might be because a golf course dumped 40 gallons of old herbicide not realizing the drain empties directly into a small creek and then into the lake and killed a few thousand fish, that would be something to be investigated even if only to make sure it doesn't happen again.

And they didn't test for that this time because there was a little rain shower 2 days prior?

1 hour ago, MOPanfisher said:

A fish has no clue that better water is a 100 yards away,

Wait, what?   Think about what you're saying 🤔

Where do shallow fish go when it gets really hot in the shallows? Why would fish ever leave the shallows if they don't know that deeper water is cooler?   What's all that BS about, that biologists taught us?  Ya know, about dying vegetation and how fish vacate it because they sense the depletion of oxygen?   

I'll maintain that a fish who finds himself in less than favorable conditions will crank up his tail and go in search of better habitat.  And since a fish can survive poor quality water (or NO WATER) for at least several minutes then I think it's safe to say its odds of moving into better water are pretty darn good.  A fish can cover some distance in 3 minutes.   

Even in water with low DO at a certain depth range the surface 10"-2' are gonna have plenty of oxygen.   

The Biologist's claims have officially lapped themselves here, have they not? They forgot what they claimed yesterday....or something.  A cloud of low DO water falls upon a fish and kills it instantly, yet a tournament caught bass can be paraded around on a stage for several minutes and still survive.    Amazing!

[fishinwrench]

Why is it that during these fish kills you never see tons of sunfish?   

Seems like if the true cause was that "a cloud of low DO water fell upon a certain area",  you'd see fish of all types suffering from it. Not some bass and walleye.  There'd be bass, walleye, crappie, shad, sunfish, speckled fart darters, and the works.

[abkeenan]

27 minutes ago, fishinwrench said:

And they didn't test for that this time because there was a little rain shower 2 days prior?

Wait, what?   Think about what you're saying 🤔

Where do shallow fish go when it gets really hot in the shallows? Why would fish ever leave the shallows if they don't know that deeper water is cooler?   What's all that BS about, that biologists taught us?  Ya know, about dying vegetation and how fish vacate it because they sense the depletion of oxygen?   

I'll maintain that a fish who finds himself in less than favorable conditions will crank up his tail and go in search of better habitat.  And since a fish can survive poor quality water (or NO WATER) for at least several minutes then I think it's safe to say its odds of moving into better water are pretty darn good.  A fish can cover some distance in 3 minutes.   

Even in water with low DO at a certain depth range the surface 10"-2' are gonna have plenty of oxygen.   

The Biologist's claims have officially lapped themselves here, have they not? They forgot what they claimed yesterday....or something.  A cloud of low DO water falls upon a fish and kills it instantly, yet a tournament caught bass can be paraded around on a stage for several minutes and still survive.    Amazing!

Though about this myself. If it is known that during the seasonal setup of the thermocline during the summer, that it attracts fish in that depth zone or water layer due to the favorable DO and temperature levels......wouldn't it also mean that the fish would sense that a new, intolerable zone has now formed and they need to move away from that DO depleted zone? Only makes sense, right? 

[fishinwrench]

3 minutes ago, abkeenan said:

Though about this myself. If it is known that during the seasonal setup of the thermocline during the summer, that it attracts fish in that depth zone or water layer due to the favorable DO and temperature levels......wouldn't it also mean that the fish would sense that a new, intolerable zone has now formed and they need to move away from that DO depleted zone? Only makes sense, right? 

Thank you!  Yes.

[Guest]

hey, you know what?????  i included the fellers name and contact info.  vent to him.  when he gets tired of phone calls, e-mails and such, he might begin to listen.  squeak to him not here.

bo

[m&m]

HMMM.....the whole thing make me ask more questions. Why mainly walleye in that size range? Do they need more oxygen than smaller or larger walleye?Why not large mouth or small mouth? Are there none around that stretch? Why just that small area near eagle rock? Did it kill all the walleye and spotted bass in that stretch? If not, why did some survive? 

HMMM.....

Mike

[Devan S.]

38 minutes ago, m&m said:

HMMM.....the whole thing make me ask more questions. Why mainly walleye in that size range? Do they need more oxygen than smaller or larger walleye?Why not large mouth or small mouth? Are there none around that stretch? Why just that small area near eagle rock? Did it kill all the walleye and spotted bass in that stretch? If not, why did some survive? 

HMMM.....

Mike

This is the one that always made me wonder.....Do certain species take different amounts of DO or do the temperature differentials provide additional stress to Walleye vs. LM?

Why isn't the bank littered with dead shad. They die if you look at them funny but never seem to show up during low DO?

Assuming it rain at 2 inches per hour for 1 hour super hard rain that volume of water would be minuscule compared to the volume of water in the lake at that point. That might explain 5-10 fishing showing up.

[dblades]

Some people just like to be contrary it seems. If I had a pea size brains to start with,  you start taking oxygen away and it will slow all responses. Eventually ( it doesn't take long) if the oxygen stays low you pass out and die. They had a really hard time waking me once when an aircraft had a pressure leak. This isn't the first or last DO caused fish kill on TR. If you've been watching the generation schedule they haven't been running much water either in or out of the lake, so I can see there being low DO pockets forming. My first college course was taught by a limnology major, a lake isn't like a glass of water with everything consistent.