EPSG:3991 Puerto Rico State Plane CS of 1927
Projected system (Lambert Conic Conformal (2SP)) in use: Puerto Rico - onshore. The full definition below, and conversion in one click.
| Code | EPSG:3991 |
|---|---|
| Name | Puerto Rico State Plane CS of 1927 |
| Type | Projected system — Lambert Conic Conformal (2SP) |
| Area of use | Puerto Rico - onshore |
| Bounds | W -67,97° · S 17,87° · E -65,19° · N 18,57° |
| Countries | Puerto Rico |
| Datum | Puerto Rico |
| Ellipsoid | Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214 |
| Base geographic system | EPSG:4139 — Puerto Rico |
| Unit | US survey foot (X east, Y north) |
| Transformation to WGS 84 | Puerto Rico to WGS 84 (3) (EPSG:1893) — accuracy 6 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of false origin | 17.833333333333332 | degree |
| Longitude of false origin | -66.43333333333334 | degree |
| Latitude of 1st standard parallel | 18.433333333333334 | degree |
| Latitude of 2nd standard parallel | 18.033333333333335 | degree |
| Easting at false origin | 500000 | US survey foot |
| Northing at false origin | 0 | US survey foot |
proj4 definition
+proj=lcc +lat_0=17.8333333333333 +lon_0=-66.4333333333333 +lat_1=18.4333333333333 +lat_2=18.0333333333333 +x_0=152400.30480061 +y_0=0 +ellps=clrk66 +units=us-ft +towgs84=11,72,-101 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:3991.
WKT (ESRI format, the .prj content)
PROJCS["Puerto_Rico_StatePlane_Puerto_Rico_FIPS_5201",GEOGCS["GCS_Puerto_Rico",DATUM["D_Puerto_Rico",SPHEROID["Clarke_1866",6378206.4,294.978698213898]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-66.4333333333333],PARAMETER["Standard_Parallel_1",18.4333333333333],PARAMETER["Standard_Parallel_2",18.0333333333333],PARAMETER["Latitude_Of_Origin",17.8333333333333],UNIT["US survey foot",0.304800609601219]]Other systems — Puerto Rico
- EPSG:2866NAD83(HARN) / Puerto Rico and Virgin Is.
- EPSG:4139Puerto Rico
- EPSG:4437NAD83(NSRS2007) / Puerto Rico and Virgin Is.
- EPSG:6307NAD83(CORS96) / Puerto Rico and Virgin Is.
- EPSG:6566NAD83(2011) / Puerto Rico and Virgin Is.
- EPSG:8545NAD83(HARN Corrected)
- EPSG:26919NAD83 / UTM zone 19N
- EPSG:32161NAD83 / Puerto Rico & Virgin Is.
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.