# How To Draw A Topographic Map Contour Lines

### The contour interval is 50 feet according to the map key.

How to draw a topographic map contour lines. To understand all map symbols see the us gov document. Because maps are two dimensional but represent three dimensions that is topgraphic maps are flat with lines that represent hills and valleys. Interestingly many geologists are quite visual and like to have visual representations of data. So this means that there will be a contour every 10 meters.

Working downslope from the highest elevation thread contours through ticks of equal value. Move to the next highest elevation when the surface seems ambiguous. Divide 300 feet by 3 to get one contour every 100 feet. Finally draw your contour lines.

Topographic profiles are used to understand what a topographic map is telling you in a specific area or you can think about it like it is giving you a side view of the landscape along a specific line on the map. You can find the contour interval in the map key usually located underneath the scale of the map at the bottom center. Please try again later. This feature is not available right now.

Tutorial on how to draw contour lines. Contours are to be placed every ten feet. For example we re going to use a contour interval of 10 meters. Between transition points of ten 30 40 50 etc add markers where to draw lines.

How to draw a topographic map. They re useful because they illustrate the shape of the land surface its topography on the map. Make sure students understand that contour maps though 2 dimensional use contour lines to show elevation above sea level. Professional geologists use exercises.

Figure 7 6 4 threading elevation contours through a tin. Contour lines show elevation and the shape of the terrain. Contour intervals tell you the change in elevation between any two contour lines.

### Contour Lines How They Work Topographic Maps Stockpile Reports

Source : pinterest.com