Average (or mean) elevations for civil divisions are not available from the USGS.
You can, however, find the elevation at the center of a civil division using the Geographic Names Information System (GNIS):
Go to the GNIS Search Domestic Names.
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Select "Search Domestic Names"
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In the Name box, type the city, town, county, etc. name (for example, “Stanley,” “Richmond,” "Madison County")
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In the "Feature Classes" option, select "Civil"
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Under "Feature", select the appropriate state and county
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Click "Query"
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Once the entry is displayed, click on “Details” to view the Summary Report to see the elevation at the center of the civil division
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As of 2022, the absolute vertical accuracy of the 3D Elevation Program (3DEP) 1/3 arc-second seamless DEM product within the conterminous United States is approximately 0.82 meters root mean square error (RMSE), based on a comparison to almost 25,000 NOAA National Geodetic Survey OPUS points. Accuracy has improved from a RMSE of 1.55 meters tested in 2013, due to the addition of lidar projects...
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Where can I find 3D Elevation Program (3DEP) product updates and status maps?
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At what scales are contours visible in The National Map Viewer?
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- Multimedia
- Publications
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