How to read contour lines on topographic maps. : r/coolguides - Free Printable

- Contour lines that are close together indicate a steep slope.
- Contour lines that are far apart indicate a gentle slope.
- A series of concentric, closed loops represents a hill or mountain peak, with the innermost loop being the highest point.
- A contour line that forms a "V" shape pointing upstream indicates a valley or stream.
- A contour line that forms a "U" shape indicates a ridge.
- When contour lines form an "M" or "W" shape, it often represents a saddle or pass between two peaks.
- A depression or basin is shown by contour lines with small tick marks (hachures) pointing inward toward the lower elevation.