View Full Version : How to identify the thermocline using Lowrance 334c depthfinder

01-18-2009, 12:02 AM
Is it possible to locate the thermocline using a Lowrance 334c depthfinder? I use the unit primarily to identify drop offs and other submerged structure, but am not clear on how to use it to identify the thermocline or if such a function is possible.

04-29-2009, 09:16 AM
All you have to do is set the sensitivity high enough to detect the change in water density that occurs where there is a significant difference in water temperature. There's another post on this topic in the General Discussions Forum, page 3, entitled "Depthfinders".

08-10-2010, 07:46 PM
Go to menu screen on the depthfinder screen and turn the sensitivity to manual.Then turn the sensitivity up till you get a bunch of clutter, typically in Trout lake in August at about 40 to 60 feetdown in 100 plus feet of water, but this can very widely with a lot of rain or cooler or warmer temps than usual.This also varies with the lake you are on. To reverse this just turn the sensitivity back to Auto.