I have the Reach R2s and using the Emlid Flow app for point collections using Point One Navigation for real-time corrections. I have been using the NE83F for the settings in Omaha, NE when collecting points. When I bring into Autocad Civil 3D and compare existing grades in the GIS map to the grades that I have collected they are about 92-93 feet difference. I know it has to be a setting that I do not have correct yet. Any suggestions?
Looks like the geoid offset in Nebraska is approx. 27m (89’) above ellipsoid. That might be a place to check first.
https://nednr.nebraska.gov/Dynamic/Benchmarks/Benchmarks/BenchmarkDetail?BenchmarkId=11
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Hi Jeff,
I agree with Dave. Please ensure the same vertical datum is used for the known and collected points. If you need any further help with it, let us know!
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