Water temps for different fish types

[splashhopper]

I was out on Lake Erie today fishing for walleyes and rainbows.

 

I think the rainbows like temps in the 50-60 degree range and am not sure about the walleyes???

 

We don't have a temp guage for the bottom of the lake, nor the $500.00 it costs to get one just now.

(We just have our depth finder with the surface temps on it.)

 

Could i attach a thermometor to the cannon ball and then bring it back up 5-10 minutes later for a reading until i can afford something better?

 

Thanks

splashhopper and botbot

Edited June 16, 2008 by splashhopper

[ccmtcanada]

Could i attach a thermometor to the cannon ball and then bring it back up 5-10 minutes later for a reading until i can afford something better?

 

Dont see why this wouldn't work. Just keep in mind that as you bring it up, it'll pass thru waters of a different temp, but directionally it should work.

[HTHM]

As CCMT says it will be going through different temps, but it should only make a difference of a few degrees at worst. I say give 'er a shot.

[jace]

some stand alone temparature probes are under $20 and the add-on probes for fish finders are generally $75 and less if you have one that has inputs for one.

[BabyHerc]

You can buy a little device that is a thermometer encased in a glass tube with a single inlet for water and a plunger for an outlet. You drop the device to the bottom, raise a few inches, shake it around to get the air out and let water in, and let it sit for about a minute. You then reel it up as quick as possible. Inside the glass case there are two measures: one for temperature and one for depth. You will know now the water tempt at the indicated depth.