OK the temps are dropping, probably below 40F.
What should we expect for water temps at the RedWing dam, especially with Prairie Island upstream a smidgen?
And, do rising or falling temps effect fishing??
Just guessing I would say 37. 
What does it get down to in the middle of the Jan DEEP Freeze??
Is it stable during the day?
BK- thanks for the link. helpful.
they are sampling at 8am daily. Any idea if there are pulses from Prairie Island that might influence feeding??
I’ve never had my MarCum camera read 32 degrees, but it has read 33/34.
It’s as stable as the air temperature, meaning it cools at night and warms during the day slightly…unless it’s cooler during the day and warmer at night. 
Others may have a different opinion, but water temp isn’t a factor for me unless I’m waiting for the spawn, the fall cool down or to a lesser extent the summer heat.
I’m really more concerned about if the line will freeze to my guides.
But then again, I don’t fish for walleye/sauger and know very little about them.
thank you.
i know very little about them also when push comes to shove…
Ya know, I’ve looked hard at my temp readings while down there at the dam. There’s some that say the MN side is warmer then the WI side, but I can’t prove it.
Looking at aerial shots, the discharge water is clearly visible on the MN side (color).
Personally, I’m more interested in the roller dam movement then the tiny bit of temp difference.
Insert disclaimer here.
It has not been unusual to fish mid to low water temps even in March (melting ice runoff)…I have caught a few big girls like this one during those water temps. Adjust your presentation (plastics or small blades) accordingly.
James caught his PB in some pretty cold water…
Jezzez you scared me Tom! 
Water freezes at 32 degrees except in the river.
As a side note, the MarCum 825sd has the built in temperature sensor on the camera head. I’ve notice that the water is slightly warmer at the bottom of the river than towards the surface.
Since the waters constantly being mixed and cold water sinks I would have thought it would be the same from top to bottom…or if anything, colder at the bottom.
Thunk wrong again.
BK, water is it’s densest at about 37 degrees F. If cold water sank then ice would form on the bottom instead of the top.
Quote:
BK, water is it’s densest at about 37 degrees F. If cold water sank then ice would form on the bottom instead of the top.
Not in Briank’s world 
things sometimes work backwards
Quote:
BK, water is it’s densest at about 37 degrees F. If cold water sank then ice would form on the bottom instead of the top.
Exactly what Morebass said. 
I was looking at my video’s for a visual confirmation of water being colder at the bottom then at the surface. The only one I see is the channel cat taking the Fiber Bait from last weekend. It only changed a tenth of a degree in 25 feet of water, getting warmer towards the surface.
Ever hear of needle ice? Had it happens many times with hoop nets this time of year. Ice forms on the bottom and on the net and will float a net to the top which in turn allows the icebergs coming down stream to catch the net and move it or tear it apart.
Thanks Herb.
Needle ice is explained in the link that Tom G provided.
Seems to be another River Thing. 
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