NTv2 Grid Shift Files (.gsb)


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Dataset Published
Dataset released date
Science and Technology
Votes: 887

Government institution

Natural Resources Canada


You can sign in and get the gsb files at http://webapp.geod.nrcan.gc.ca/geod/tools-outils/ntv2.php or the desktop application but it would be nice if they were available under open data so that they could be included into GIS software more easily and distributed.

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Submitted by Al MacNEIL on April 29, 2019 - 1:07 PM

I am unable to make a provincial request for their GSB files as NRCan's contact links to Provincial points of contact for acquiring their grid shift files is not current. Also, for the territories does Canada Lands hold a higher resolution grid shift file for the territories? Or are there territorial organizations I need to contact? I am only finding general statements of transforming from NAD27 to NAD83 CSRS (no epoch given). If you can supply a suitable email point of contact for Canada Lands (or other PoC) who may support this request better, it would be greatly appreciated.

Submitted by Bhanu on February 05, 2019 - 8:29 PM

Im a GIS professional and looking to download transformation grid file to transform data from WGS1984 To NAD1983 and vice versa for Alberta region. Please advice on how to download this Thankyou

Submitted by Pat Smith on February 22, 2018 - 7:23 PM

Looking to download binary grid file ON83CSv1.gsb for testing with GeoMedia application. Am I over-looking where the .gsb files can be downloaded? Thanks! Pat Hexagon GeoSpatial

Submitted by Richard MacPherson on February 08, 2018 - 6:53 PM

How do I download the CVG69710.gsb grid shift file, for transforming NAD83(CSRS) 1997 to NAD83(CSRS) 2010?

Submitted by Mark McCracken on January 23, 2017 - 1:11 PM

I work for the Canadian Hydrographic Service and I would like an up-to-date version of the NTv2 gsb shift file. Our organization has some legacy data that is on the NAD27 datum and we would like to shift it to NAD83. We have ntv2_0_20000915.gsb, is this the most up-to-date version? Thank you, Mark McCracken

Submitted by open-ouvert on January 31, 2017 - 2:01 PM

Mark, Just to close the loop - the data owner has contacted you directly and confirmed that the version you have is the most up-to-date one, and that the release date for the official file is 95-07-05. Thanks for checking in! Karin - the open-ouvert team

Submitted by Stephane Milette on November 15, 2016 - 4:16 PM

Hi ! I would like to get the NTv2 for Nad83 (Csrs) to Nad83 (orig.) for Topcon product. thank you

Submitted by George Shi on February 12, 2016 - 3:22 PM

I'm a GIS professional and would like to get NTV2 file for NAD27 /83 Conversion.

Submitted by open-ouvert on September 25, 2014 - 1:14 PM

Thank you for your feedback. We have forwarded your comment to the dataset provider for their response.

Submitted by krishna karki on September 24, 2014 - 10:39 PM

I am student of BGIS at SAIT Polytechnics, Calgary, Alberta. I need these data for my education purposes. Thank you