USGS Maps
January 1, 1994
Most USGS topographic maps use brown contours to show the shape and elevation of the terrain. Elevations are usually shown in feet, but on some maps they are in meters. Contour intervals vary, depending mainly on the scale of the map and the type of terrain.
Citation Information
| Publication Year | 1994 |
|---|---|
| Title | USGS Maps |
| DOI | 10.3133/70039406 |
| Authors | |
| Publication Type | Report |
| Publication Subtype | USGS Unnumbered Series |
| Series Title | General Information Product |
| Index ID | 70039406 |
| Record Source | USGS Publications Warehouse |