Orthophoto or Raster Imagery
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Historical datasets are made available for your use for that layer by choosing the desired, available year in a drop down.
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A "Photo Date" layer is also available that displays the specific date the imagery was taken. Knowing the e the imagery date can be a valuable asset in many different scenarios. This information is also a clear method to show the seams of the imagery swaths.
Hillshading
The Hillshade is an adjustment layer to the NAIP imagery. It provides a visualization of the elevation changes by adding a shadowing effect.
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Canadian Air Photo Mapping Imagery
For the two Canadian provinces, Manitoba and Saskatchewan, that we serve, the imagery will auto switch to "Air Photo". However, the imagery here is for a span of years such as 2008 - 2010. Otherwise the behavior, as far as having the latest imagery or being able to disable the imagery layer is the same as the U.S. land imagery.