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Contour Mapping and the Rule of “V’s”. What are contour lines?. These. 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. Reading a map with rivers.
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What are contour lines? These
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
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”.
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.