Technical Specification Overview
| Parameter | Standard Value |
|---|---|
| Primary Geodetic Datum | NAD83 (2011) |
| Legacy/Historical Datum | NAD27 |
| Local Grid Projection | State Plane (SPCS) |
| Known Datum Shift (vs WGS84) | 1.0 - 2.2 meters |
| National Mapping Authority | National Geodetic Survey (NGS) |
Professional Compliance Warning
Failure to apply correct transformation parameters when converting from WGS84 (GPS) to NAD83 (2011) creates a systematic 1.0 - 2.2 meters offset. In construction and legal surveying, this drift exceeds the allowable error margin for any certified geodetic workflow.
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