False reading on Lowrance Sonar
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I posted this over on Crappie main and got a lot of cute remarks but no answers. So, I will try it here.
We were fishing on a lake yesterday, water temperature was about 52 degrees, water clarity was about 6 feet. Sonar (fish finder) is a Lowrance 135c and the digital read out indicated 15 ft. water depth, same as the screen display. The screen display showed a level bottom (we were not moving) that looked like soft mud. When I dropped anchor it went down 49 feet!! Then I dropped a weighted line, same thing, 49 FEET! Yet the sonar was showing only 15 feet.
Anyone have an answer? ....thermocline?, zoo plankton?, Loch Ness?
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