EPSG:4617 — NAD83(CSRS)
NAD83(CSRS) — the Canadian Spatial Reference System realisation of NAD83, used by federal and provincial mapping in Canada.
PROJ definition
+proj=longlat +ellps=GRS80 +no_defs +type=crs
Geographic bounds
W -141.01° S 38.21° E -40.73° N 86.46°
Convert coordinates with EPSG:4617
Official EPSG transformations for NAD83(CSRS)
Datum transformations involving EPSG:4617 published in the EPSG dataset, with parameters, accuracy and area of use:
About EPSG:4617
EPSG:4617 is NAD83 (Canadian Spatial Reference System), the Canadian realisation maintained by Natural Resources Canada through the active control survey network. CSRS realisations are produced periodically (CSRS96, CSRSv2, CSRSv6, CSRSv7, CSRSv8) and are the recommended CRS for any work in Canada that requires sub-metre accuracy.
Canada is also progressively adopting NAD83(CSRS)v8 / Canadian Geodetic Vertical Datum 2013 (CGVD2013) as a unified horizontal-and-vertical reference. Provincial mapping uses regional projections — UTM zones 7N-22N, MTM zones in Quebec, BC Albers, Atlas Lambert (EPSG:3978) — all on NAD83(CSRS).
Common use cases
- Canadian federal mapping (Natural Resources Canada)
- Provincial cadastral and land-registry data
- Statistics Canada datasets
- GNSS surveying using the Canadian Active Control System (CACS)
Common transformations from EPSG:4617
- EPSG:4617 → EPSG:4326NAD83(CSRS) → WGS 84
- EPSG:4617 → EPSG:3857NAD83(CSRS) → WGS 84 / Pseudo-Mercator
- EPSG:4617 → EPSG:3395NAD83(CSRS) → WGS 84 / World Mercator
- EPSG:4617 → EPSG:4978NAD83(CSRS) → WGS 84
- EPSG:4617 → EPSG:7789NAD83(CSRS) → ITRF2014
- EPSG:4617 → EPSG:4267NAD83(CSRS) → NAD27
- EPSG:4617 → EPSG:4269NAD83(CSRS) → NAD83
- EPSG:4617 → EPSG:6318NAD83(CSRS) → NAD83(2011)
- EPSG:4617 → EPSG:4322NAD83(CSRS) → WGS 72
- EPSG:4617 → EPSG:26910NAD83(CSRS) → NAD83 / UTM zone 10N
- EPSG:4617 → EPSG:26911NAD83(CSRS) → NAD83 / UTM zone 11N
- EPSG:4617 → EPSG:26912NAD83(CSRS) → NAD83 / UTM zone 12N
Frequently asked questions
- Is NAD83(CSRS) the same as the U.S. NAD83?
- They share a name and were originally aligned, but each country maintains its own realisations. NAD83(CSRS) is fixed to the North American plate via Canadian CORS data; for sub-metre work between Canadian and U.S. data, use the published Helmert parameters between specific realisations.
- What is the proj4 string for EPSG:4617?
- The proj4 definition for EPSG:4617 is: +proj=longlat +ellps=GRS80 +no_defs +type=crs
- Where is EPSG:4617 used?
- EPSG:4617 (NAD83(CSRS)) is defined for the area: Canada.