🌍 GEODETIC REFERENCE
Surveying in France
Lambert-93 (EPSG:2154) is the single legal projection for metropolitan France. The CC (Conique Conforme) 9-zone system reduces distortion for large-scale work.
National datum
RGF93
Vertical datum
NGF-IGN69
UTM zones
30N, 31N, 32N (metropolitan)
CORS stations (our DB)
16
Mapping authority
Institut national de l'information geographique et forestiere (IGN)