Uniform Slope The horizontal distance between contours remains constant.  If the horizontal distance between contours is zero the uniform slope is vertical.  Uniform slopes are sometimes called even slopes.

Points to Remember

• When the horizontal spacing of contours decreases with decreasing height the slope is convex and local visibility becomes restricted due to the proximity of dead ground ( ground you cannot see).
• When the horizontal spacing of contours increases with the decreasing height, the slope is concave and there is no dead ground locally.
• When contours follow no clearly defined pattern and the horizontal distance between them varies continuously, this usually indicates undulating terrain.  In these circumstances, the pattern of streams and rivers give a good indication of the general shape of the land.
• Irregular and closely spaced contours indicate rugged and broken slopes, smooth contours indicate smooth slopes.
• The closer together the contours the steeper the slope.