What a contour interval on a topographic map

QUESTION POSTED AT 02/06/2020 - 01:56 AM

Answered by admin AT 02/06/2020 - 01:56 AM

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.
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