Topographic Profiling

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TopographicProfiling

• -DeMarco

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The first step

• Strike a line across the feature that you would
  like to profile.
• It is possible that this may already be done for
  you.
• -The line will probably be referred to as Line
  A-B or Line A-A

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Notice line AB
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So, if we were to look at a profile view of line
AB on our topographic map, what might we expect
to see? Predictions?

• Time to FIND OUT!
• Step 2

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Take out a piece of scrap paper
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Make a small tick at A and B
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Make a small tick where each contour line crosses
AB
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Label each tick mark with the correct value!
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Make the X-axis exactly as long as line AB. Label
it as distance
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Next, decide what the HIGHEST and LOWEST
elevation values are that line AB crosses on your
topographic map and create a scale. You may wish
to increase your scale by the contour interval on
the map to make things easier. In this case, we
are going up by 10s, because our contour
interval on the map is 10 meters.
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Remember Labels and Units!
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Hold your scrap paper page up to the profile.
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Transfer the tick marks directly onto the profile.
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straight edge may help
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connect the dots!
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This is what you might expect the profile or
cross section view of line AB to look like!
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Does it make sense? SURE! There is a creek
flowing through this region. Think about where it
would flow on your profile. We also recognize the
V shaped contour lines that indicate the
direction of water flow.
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YOU DID IT!
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Or if you are lucky enough to be able to do your
profile on the same page as the topographic map

• You can use the
• Drop down a dotted line method!

Example
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Same idea, but no need for tick marks and scrap
paper!
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THE END

• Special thanks to Charles Burrows some of the
  images are from his website.