LiDAR

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LiDAR
And some of its uses
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LiDAR (Light Detection And Ranging) is a
technology that can be used as a topographic
survey for many projects, including wetland
creation.
Flying LiDAR creates a datafile of elevation
points hundreds of times more extensive than
anything available from field surveying. This
image shows an example of a project site and all
of the LiDAR points associated with that site.
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LiDAR data can then be used to create contour
lines at the required interval (these lines are 1
foot contours)
This data has been used to design wetlands,
design stormwater plans, evaluate watersheds, map
floodplains and has dozens of other uses yet to
be utilized.
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It can even help a project manager visualize what
the land actually looks like with the use of GIS.
This image comes from making a 3D image of the
LiDAR points and overlaying the aerial photos.
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Here are the points used to create the image in
the previous slide
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LiDAR can also be used to help develop an
accurate view of the watershed in which you are
working.
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3D Compared to a 2D View
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Potential Wetland Site
Slopes can be exaggerated to help you visualize
the actual direction of water movement.
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