Content last updated 7/12/2023
Linear Distortion Maps
Below are maps showing linear distortion and performance statistics for preliminary designs of SPCS2022 zones in the conterminous U.S. (CONUS) and Alaska (click on the maps to get higher resolution versions). Maps of existing SPCS 83 zones are also provided to compare with SPCS2022. Because SPCS2022 is still under development, those maps give the date when any zone shown was last updated.
Not all maps use the same distortion symbology, because distortion can vary greatly in different zones. However, the symbology is the same for adjacent SPCS2022 and SPCS 83 maps to facilitate comparison.
Maps for individual states and territories in CONUS, the Pacific, and the Caribbean will soon be available for download, along with the distortion raster and zone polygon datasets used to create the maps.
See also:- Online interactive distortion and zone web maps of alpha SPCS2022
- Alpha NCAT to compute preliminary SPCS2022 coordinates and distortion
CONUS SPCS2022 statewide zones (200 ppm)
CONUS SPCS2022 statewide zones (50 ppm)
SPCS2022 special use zones (50 ppm)
CONUS SPCS2022 multizone complete (20 ppm)
CONUS SPCS2022 multizone partial (20 ppm)
All CONUS SPCS2022 zone layers (20 ppm)
All CONUS SPCS2022 zone layers (50 ppm)
All CONUS SPCS 83 zones (50 ppm)
Alaska SPCS2022 statewide zone (1000 ppm)
Alaska SPCS2022 multizone complete (50 ppm)
Alaska SPCS2022 multizone complete (20 ppm)
Alaska SPCS2022 multizone partial (20 ppm)
Both Alaska SPCS2022 multizone layers (50 ppm)
All Alaska SPCS 83 zones (50 ppm)
