The contour interval can be different between maps. It should be listed in the marginal data (the data usually at the bottom of the map). Generally, it will be less than 100', (10', 20', etc), and every 100' line will be darker/heavier and labelled to denote 100', 200', etc. (Could also be in meters, depending on map).crazy2medic wrote: ↑Fri Jul 26, 2019 5:06 pm I'm a bit rusty on this so correct me if I'm wrong the distance between contour lines is 100ft?
The closer the lines are to each other the steeper the terrain?
And you are correct; the closer the lines are together, the steeper the terrain. A cliff will have several contour lines coming together, & usually will have little tick marks denoting the cliff.