I have a Lowrance Gen3 unit with a Navionics chip. My question is does anyone know how to adjust the water level for the map? Currently the contours are showing full pool.

TIA
Kungfoogrip

You can�t move the contour lines, you can only change the shading for the contour lines that you wish to see. Def can�t do anything if your lake is over full pool.

As Grout-Scout stated you cannot adjust the contour lines on the mapping card, only the shading. If it helps, either for fishing or planning a trip, you can adjust the water depth using the Navionics phone or tablet app.

Well that sucks. Not too impressed with Navionics, seems limited. Looks like I am going to record my own maps with C Map.

Thanks for the replies
Kungfoogrip

The fact that you cant change the contour lines on the card isn't as much of a Navionics limitation as it is chartplotter manufacturers allowing you to do it. Anything you can do on the app is capable of being done on the card if allowed. You can also record your own mapping with Navionics, but that will not change the fact you cant adjust the contour lines based on real time lake level data.