Rules of Contouring
(Gedzelman,
p15-16)
¥ÒEvery point
on a given contour line has the same value of height above
sea level.Ó
¥ÒEvery contour line separates regions with
greater values than on the line
itself from regions with smaller values than on the line
itself.Ó
¥ÒThe closer the contour lines, the steeper the
slope or larger the
gradient.Ó
¥ÒThe shape of the contours indicates the shape
of the map features.Ó