From the chart, select Menu > Quickdraw Contours > Settings.

Recording Offset

Sets the distance between the sonar depth and the contour recording depth. For example, a sonar depth of 3.6 m (12 ft.) with a recording offset of -0.5 m (-1.5 ft.) creates contours at a depth of 3.1 m (10.5 ft.).

Display Offset

Sets differences in contour depths and depth labels on a Garmin Quickdraw™ Contours map to compensate for changes in the water level of a body of water, or for depth errors in recorded maps.

Survey Coloring

Sets the color of the Garmin Quickdraw Contours display. When the setting is turned on, successfully recorded areas appear green, and unsuccessfully recorded areas appear red. When the setting is turned off, the contour areas use standard map colors.