Types of Slopes On A Map (MGRS)

The rate of rise or fall of a terrain feature is known as its slope. The speed at which equipment or personnel can move is affected by the slope of the ground or terrain feature. This slope can be determined from the map by studying the contour lines—the closer the contour lines, the steeper the slope; the farther apart the contour lines, the gentler the slope. Four types of slopes are as follows:

Gentle Slope – Contour lines showing a uniform, gentle slope will be evenly spaced and wide apart.

navigation_uniform_gentle_slope

Steep Slope – Contour lines showing a uniform, steep slope on a map will be evenly spaced, but close together. Remember, the closer the contour lines, the steeper the slope.

navigation_uniform_steep_slope

Concave Slope – Contour lines showing a concave slope on a map will be closely spaced at the top of the terrain feature and widely spaced at the bottom.

navigation_concave_slope

Convex Slope – Contour lines showing a convex slope on a map will be widely spaced at the top and closely spaced at the bottom.

navigation_convex_slope

 

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