A Guide to Canada's CSRS Datum and MicroSurvey Products
All MicroSurvey Products can be configured to allow work in the Canadian Spatial Reference System (CSRS) zone. In most cases surveyors will constrain their survey to a modern monument or reference station that is already realized in the CSRS datum so no special steps are required.
The NAD83(Original) to NAD83(CSRS) Gridshift
In a limited number of cases the application of the NAD83(Original) to NAD83(CSRS) or ATS77 to NAD83(CSRS) gridshift is required during either measurement or computations in order to transform between the Original and CSRS datums. MicroSurvey Products can be configured to perform this:
Step 1: Download the CANADA_USA mapping files, unzip, and copy to the mapping folder for your product. FieldGenius for Android has a built in Gridshift Library feature to perform this step.
Step 2: (Depending on your location) configure the mapping folder to ensure the gridshift file intended for your region is supported. See notes below regarding your region.
Regional Notes:
For all provinces it is recommended that users create a free account at the NRCAN Coordinate Transformations page and download the latest version of the gridshift file for your region. In some cases MicroSurvey does not have permission to include the required gridshift file, so you must download a version. See notes below:
British Columbia
- Visit NRCAN Coordinate Transformations page and download BC_93_05.GSB to \Mapping\Canada\CSRS\
- replace \Mapping\Nad83ToCsrs.gdc with one configured for your region
Alberta
- The Alberta Gridshift is included in the CANADA_USA Mapping package
- replace \Mapping\Nad83ToCsrs.gdc with one configured for your region
Saskatchewan
- Visit NRCAN Coordinate Transformations page and download SK83-98.gsb to \Mapping\Canada\CSRS\
- replace \Mapping\Nad83ToCsrs.gdc with one configured for your region
Manitoba
- No CSRS gridshift available
Ontario
- The Mapping package is preconfigured to support Ontario, no further steps required
Quebec
- The Quebec Gridshift is included in the CANADA_USA Mapping package
- replace \Mapping\Nad83ToCsrs.gdc with one configured for your region
Quebec (ATS77)
- Visit Maritimes Article
New Brunswick (ATS77)
- Visit Maritimes Article
Nova Scotia (ATS77)
- Visit Maritimes Article
Prince Edward Island (ATS77)
- Visit Maritimes Article
Newfoundland
- Visit NRCAN Coordinate Transformations page and download NLCSRSV4A.GSB to \Mapping\Canada\CSRS\
- replace \Mapping\Nad83ToCsrs.gdc with one configured for your region
Selecting a CSRS or Original System
MicroSurvey Products include a selection of UTM and MTM systems in all required zones which reference the NAD83 CSRS datum. The Coordinate system Group and/or naming structure of the system allows you to determine how it will function. Use the table below as a guide to selecting a coordinate system to suit your purpose and procedures:
Product: FieldGenius for Windows
| Mapping Folder: Windows Tablets: C:\ProgramData\MicroSurvey\FieldGenius\yyyy\Mapping\ Win CE or Mobile: (Path may vary)\MicroSurvey FieldGenius\Programs\Mapping\ |
Name includes (CSRS) ie: MTM/83/CSRS-07 ie: UTM83/CSRS-18N |
Name includes (Original) ie: MTM/83/Original-07 ie: UTM83/Original-18N |
| Found in Canadian Systems group and: Name DOES NOT include "GNSS" or system is found in "Canadian Systems" group ie: Canadian Systems | MTM/Original-07 ie: Canadian Systems | UTM83/CSRS-18N |
Gridshift is applied in a positive direction * |
No gridshift applied |
| Found in "Canadian Systems for GNSS" Group and: Name includes "GNSS" or system is found in "Canadian Systems for GNSS" group ie: Canadian Systems for GNSS | MTM/Original-07/GNSS ie: Canadian Systems for GNSS | UTM83/CSRS-18N/GNSS |
Gridshift is applied in a negative direction ** |
No gridshift applied |
Product: FieldGenius for Android
|
Mapping folder: \\Internal Storage\FieldGenius\Mapping (Direct Download via Gridshift Library within the program) |
Name includes (CSRS) ie: Canada/MTM NAD83(CSRS) for GNSS | MTM83/CSRS-07/GNSS ie: Canada/UTM NAD83(CSRS) | UTM83/CSRS-18N |
Name includes (Original) ie: MTM/83/Original-07 ie: UTM83/Original-18N |
| Name DOES NOT include "GNSS" ie: Canada/MTM NAD83(Original)|MTM83/Original-07 ie: Canada/UTM NAD83|UTM83/Original 18N ie: Canada/UTM NAD83(CSRS) | UTM83/CSRS-18N |
Gridshift is applied in a positive direction * | No gridshift applied |
| Name includes "GNSS" ie: Canada/MTM NAD83(CSRS) for GNSS | MTM83/CSRS-07/GNSS ie: Canada/UTM NAD83(CSRS) for GNSS | UTM83/CSRS-18N/GNSS ie: Canada/UTM NAD83 for GNSS | UTM83/Original-18N/GNSS |
No gridshift applied | Gridshift is applied in a positive direction * |
| Mapping folder: C:\ProgramData\MicroSurvey\StarNet\V?\Mapping\ IMPORTANT NOTE: Regardless of coordinate system group or name, a transformation or gridshift will only be applied under the following conditions: 1. A P or PH record which defines a Lat/Long couplet is read and converted to a mapping coordinate 2. A coordinate system is selected and Project Options | Select Ellipsoid to Use is set to "WGS84" |
Name includes (CSRS) ie: MTM/83/CSRS-07 ie: UTM83/CSRS-18N |
Name includes (Original) ie: MTM/83/Original-07 ie: UTM83/Original-18N |
| Found in Canadian Systems group and: Name DOES NOT include "GNSS" or system is found in "Canadian Systems" group ie: Canadian Systems | MTM/Original-07 ie: Canadian Systems | UTM83/CSRS-18N |
Gridshift is applied in a positive direction * | No gridshift applied |
| Found in "Canadian Systems for GNSS" Group and: Name includes "GNSS" or system is found in "Canadian Systems for GNSS" group ie: Canadian Systems for GNSS | MTM/Original-07/GNSS ie: Canadian Systems for GNSS | UTM83/CSRS-18N/GNSS |
No gridshift applied | Gridshift is applied in a positive direction * |
Product: MicroSurvey CAD, embeddedCAD or inCAD
| Mapping Folder: C:\ProgramData\MicroSurvey\(Product)\yyyy\mscad\Mapping\ |
Name includes (CSRS) ie: MTM/83/CSRS-07 ie: UTM83/CSRS-18N |
Name includes (Original) ie: MTM/83/Original-07 ie: UTM83/Original-18N |
| Found in Canadian Systems group and: Name DOES NOT include "GNSS" or system is found in "Canadian Systems" group ie: Canadian Systems | MTM/Original-07 ie: Canadian Systems | UTM83/CSRS-18N |
Gridshift is applied in a positive direction * | No gridshift applied |
| Found in "Canadian Systems for GNSS" Group and: Name includes "GNSS" or system is found in "Canadian Systems for GNSS" group ie: Canadian Systems for GNSS | MTM/Original-07/GNSS ie: Canadian Systems for GNSS | UTM83/CSRS-18N/GNSS |
No gridshift applied | Gridshift is applied in a positive direction * |
* Positive direction equates to:
From: NAD83(Original) ----> To: NAD83(CSRS)
**Negative Direction equates to:
From: NAD83(CSRS) -----> To: NAD83(Original)
Brian Sloman
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