In a topographic map, where is the contour interval value typically found?

• A. Legend
• B. Scale
• C. Title block
• D. Marginal Information on the map

Answer: (D)

Contour interval is a piece of map metadata that tells you how much elevation each contour line represents. That kind of information is kept in the marginal information, the edge-area notes of a topographic map, where essential data like scale, declination, date, projection, and other parameters are listed. Placing the contour interval there makes it easy to reference while interpreting the map, regardless of which area you’re looking at. The legend explains the symbols on the map, the scale shows distance, and the title block provides the map’s name and date, but the contour interval itself belongs with the marginal information.