To find contour interval divide the difference in elevation between the index lines by the number of contour lines from one index line to the next. For example, if the distance 200 is divided by the number of lines, where the number of lines is 5.
How Do You Find Contour Interval?
A contour interval is the difference in elevation between contour lines on a map. It is usually expressed in feet or meters.
For example, a contour interval of 40 feet means that each contour line is 40 feet higher or lower in elevation than the contour line next to it.
To find the contour interval, look at the map legend. The contour interval will be listed in the legend, usually in the bottom left corner of the map.
If you‘re using a topographic map, the contour interval will be listed in the legend as well. The contour interval will be listed in feet or meters.
If you‘re using a GPS, you can usually find the contour interval by looking at the map settings. The contour interval will be listed in the map settings, usually in the ‘Units‘ or ‘Map Scale‘ section.
Once you know the contour interval, you can use it to estimate the elevation of features on the map.
For example, if you see a contour line that is labeled ‘100 feet,’ you can estimate that the elevation of the feature is somewhere around 100 feet. Keep in mind that the contour interval is only an estimate, and the