Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: National Geodetic Survey, www.ngs.noaa.gov
Revision date: 2018-04-17
Scope: Geodesy.
Remarks: In CA CT FL ID MA ME MT NC NH NJ NV NY OR RI SC TN VT WA and WI, replaces the early 1990s HARN adjustment. In rest of CONUS the difference between the HARN and FBN adjustments was under 5cm and the original HARN adjustments were adopted as NAD83(FBN).
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "NAD83 (Federal Base Network)", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 }, "scope": "Geodesy.", "area": "American Samoa - Tutuila, Aunu'u, Ofu, Olesega, Ta'u and Rose islands - onshore. Guam - onshore. Northern Mariana Islands - onshore. Puerto Rico - onshore. United States (USA) - conterminous (contiguous) lower 48 states (CONUS) onshore plus Gulf of Mexico offshore continental shelf (GoM OCS). US Virgin Islands - onshore.", "bbox": { "south_latitude": -14.59, "west_longitude": 144.58, "north_latitude": 49.38, "east_longitude": -64.51 }, "id": { "authority": "EPSG", "code": 1211 } }