From a chart, select MENU > Layers > Water.

Depth Shading

Specifies an upper and lower depth to shade between (Depth Range Shading).

Shallow Shading

Sets the shades from the shoreline to the specified depth.

Spot Depths

Turns on spot soundings and sets a dangerous depth. Spot depths that are equal to or more shallow than the dangerous depth are indicated by red text.

Fishing Contours

Sets the zoom level for a detailed view of bottom contours and depth soundings and simplifies map presentation for optimal use while fishing.

Relief Shading

Shows the gradient of the bottom with shading. This feature is available only with some premium maps.

Sonar Imagery

Shows sonar imagery to help show the density of the bottom. This feature is available only with some premium maps.

Lake Level

Sets the present water level of the lake. This feature is available only with some premium maps.