BWCA Water temp questions. Boundary Waters Fishing Forum
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drrick
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04/30/2018 08:43PM   (Thread Older Than 3 Years)
With all the information on this forum concerning water temps and what fish are doing. What is the best way to determine water temps? And then is it surface temperature, several feet deep, or at the level the fish are at?
So do we go by what the fish finder says or do we bring a thermometer to dangle in the water?
 
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carmike
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04/30/2018 09:46PM  
Surface temps are what people refer to when they talk about water temps. At least I've never known anyone who uses a thermometer to check the temps below the surface.
 
carmike
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04/30/2018 09:46PM  
Surface temps are what people refer to when they talk about water temps. At least I've never known anyone who uses a thermometer to check the temps below the surface.
 
mastertangler
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05/01/2018 05:28AM  
If I ever get really serious about Lake Trout I will definitely be using a water temp device which measures water temps at 5' intervals. It would be good to know where that 55 degree water is and focus my efforts there during August especially on and near bottom since big Lakers tend to be bottom orientated when in a neutral or negative mood. At least that is what I have heard.......I'm no laker expert thats for sure.

A guy might be able to make the same argument with northern, particularly the larger specimens.

Fish Hawk
 
05/01/2018 07:03AM  
Surface temps is what your sonar is reading. It is most important in the Spring when the surface is warmer and all of the food chain is seeking the warmth. A good sonar can also detect the thermocline, which is where cisco, LT and some larger eyes and northern will hang in the Summer.
 
05/01/2018 07:19PM  
Like my fish locator has like a 15 foot cord so I can drop that down 15 feetat least and get that temp. Mine does measure temperature.
 
Savage Voyageur
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05/01/2018 07:26PM  
My transducer is about 6-8 inches below the surface. That’s all I worry about.
 
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