Topographic Maps

1
Topographic Maps
http//en.wikipedia.org/wiki/ImageTopographic_map
_example.png
2

• Show the shape of the Earths surface
• Lines on the map are called contour lines
• Contour lines show points of equal elevation

http//interactive2.usgs.gov
3
Contour Lines
Equal elevation
http//www.4orienteering.com
4
Contour Lines

• Never cross each other
• Connect with themselves
• Get closer together as land gets steeper
• Get further apart as land gets flatter

5
Contour Interval
The distance that separates contour intervals
http//www.4orienteering.com
6
Contour Profile

• The shape you would see if were sliced along a
  line

http//interactive2.usgs.gov
7
Close to Home

• Local maps
• http//www.topozone.com/states/Texas.asp?countyBe
  xar