In the last exercise, you used the formula of RISE OVER RUN to calculate the stream gradients. Usually this information is obtained from a topographic map. Use your Cumberland, MD quadrangle to make the following measurements and determine the stream gradients.

1. Locate the stream named Braddock Run that flows through LaVale.

2. What direction does this stream flow? Answer

3. Locate where Braddock Run first enters the map area. What is the elevation of the first contour V? Answer

4. Locate the last contour V before the stream depiction is lost in the overlay of the new printing showing the interstate highway. What is the elevation of this contour? Answer

5. Measure the distance between these two points using the edge of a sheet of paper and a very sharp pencil. What is the distance in miles to the nearest hundreth? Answer

6. Calculate the gradient of Braddock Run between these two points. Answer

7. Locate the first contour line before this stream crosses the state highway in LaVale. What is the elevation of this line? Answer

8. What is the elevation of the last contour before the stream joins Wills Creek? Answer

9. Measure the distance between these two points using the edge of a sheet of paper and a very sharp pencil. What is the distance in miles to the nearest tenth? Answer

10. Calculate the gradient of Braddock Run between these two points. Answer

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