EPSG:3446 NAD83(HARN) / Rhode Island (ftUS)
Projected system (Transverse Mercator) in use: USA - Rhode Island. The full definition below, and conversion in one click.
| Code | EPSG:3446 |
|---|---|
| Name | NAD83(HARN) / Rhode Island (ftUS) |
| Type | Projected system — Transverse Mercator |
| Area of use |
USA - Rhode Island United States (USA) - Rhode Island - counties of Bristol; Kent; Newport; Providence; Washington. |
| Bounds | W -71,85° · S 41,13° · E -71,08° · N 42,02° |
| Countries | United States |
| Datum | NAD83 (High Accuracy Reference Network) |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:4152 — NAD83(HARN) |
| Unit | US survey foot (X east, Y north) |
| Transformation to WGS 84 | NAD83(HARN) to WGS 84 (3) (EPSG:1901) — accuracy 1 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 41.083333333333336 | degree |
| Longitude of natural origin | -71.5 | degree |
| Scale factor at natural origin | 0.99999375 | unity |
| False easting | 328083.3333 | US survey foot |
| False northing | 0 | US survey foot |
proj4 definition
+proj=tmerc +lat_0=41.0833333333333 +lon_0=-71.5 +k=0.99999375 +x_0=99999.99998984 +y_0=0 +ellps=GRS80 +units=us-ft +towgs84=-0.991,1.9072,0.5129,0.02579,0.00965,0.01166,0 +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:3446.
WKT (ESRI format, the .prj content)
PROJCS["NAD_1983_HARN_StatePlane_Rhode_Island_FIPS_3800_Feet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",328083.3333],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-71.5],PARAMETER["Scale_Factor",0.99999375],PARAMETER["Latitude_Of_Origin",41.0833333333333],UNIT["US survey foot",0.304800609601219]]Other systems — United States
- EPSG:3433NAD83 / Arkansas North (ftUS)
- EPSG:3434NAD83 / Arkansas South (ftUS)
- EPSG:3435NAD83 / Illinois East (ftUS)
- EPSG:3436NAD83 / Illinois West (ftUS)
- EPSG:3437NAD83 / New Hampshire (ftUS)
- EPSG:3438NAD83 / Rhode Island (ftUS)
- EPSG:3441NAD83(HARN) / Arkansas North (ftUS)
- EPSG:3442NAD83(HARN) / Arkansas South (ftUS)
- EPSG:3443NAD83(HARN) / Illinois East (ftUS)
- EPSG:3444NAD83(HARN) / Illinois West (ftUS)
- EPSG:3445NAD83(HARN) / New Hampshire (ftUS)
- EPSG:3451NAD83 / Louisiana North (ftUS)
- EPSG:3452NAD83 / Louisiana South (ftUS)
- EPSG:3453NAD83 / Louisiana Offshore (ftUS)
- EPSG:3455NAD83 / South Dakota South (ftUS)
- EPSG:3456NAD83(HARN) / Louisiana North (ftUS)
- EPSG:3457NAD83(HARN) / Louisiana South (ftUS)
- EPSG:3458NAD83(HARN) / South Dakota North (ftUS)
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.