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Understanding Contour Mapping: The Rule of “V’s”

Learn about contour lines and how they show elevation on maps. Discover the significance of rivers in reading contour lines and identifying elevations. Practice drawing contour lines with helpful examples.

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Understanding Contour Mapping: The Rule of “V’s”

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  1. Contour Mapping and the Rule of “V’s”

  2. What are contour lines? These

  3. What do contour lines show? Elevation Map B – measured feet Map A What is the highest elevation on map A? Map B? 3500 feet 47 feet

  4. Reading a map with rivers Knowing which way a river flows is often the key to being able to label contours correctly. It helps you find direction. What happens to the contour lines in this picture when they cross a river? They bend to form an upside down “V”.

  5. Examples of V’s

  6. What does the upside down V mean? The point of the V is facing upstream. So you know the elevation is higher in the direction of the point.

  7. Example of contour map

  8. Depression Contours

  9. Contour Spacing

  10. Example of topo map

  11. Drawing Contour LinesLet’s Practice!

  12. Demo for drawing contour lines on map

  13. Contour Activity #1

  14. Contour Activity #2

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