1. Contour Lines and Elevation
Rules to Remember!!!!

2. Contour Lines Never Cross.
Rule # 1
Contour Lines Never Cross.

3. Rule # 2
Contour Lines Never End.

4. Rule # 3
Contour Lines Always increase or decrease by the same elevation on a map.
This is called a contour interval

5. Rule # 4
When contour lines cross a river the “V” always points upstream.

6. Rule # 5
A Contour line shows the elevation above sea level.

7. Rule # 6
Contour lines that are evenly spaced and far apart indicate a gradual slope.
Contour lines that are close together indicate a steep slope.