Description
Alberta Survey Control Marker (ASCM) data is available for three reference frames: The North American Datum of 1927 (NAD27), the original derivation of the North American Datum of 1983 (NAD83(Original)), and the Canadian Spatial Reference System (CSRS) derivation of NAD83 (NAD83(CSRS)). This fact sheet reviews the NAD27 and NAD83(Original) datums including currency of coordinate data, coordinate differences between datums, and phasing out of ASCM integration and maintenance of coordinate data on each datum.
Updated
March 11, 2021
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Resources
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FactSheet2-ASCM_Legacy_Data.pdf
Alberta Survey Control Marker (ASCM) data is available for three reference...
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Title and Dataset Information
Date Modified
2021-03-11
Update Frequency
Once
Publisher / Creator Information
Creator
Publisher
Environment and Parks
Subject Information
Topic
Spatial Coverage
Resource Dates
Date Created
2021-03-11
Date Added to catalogue
2021-04-13T15:22:25.270989
Date Issued
2021-04-30
Date Modified
2021-03-11
Audience information
Language
Identifiers
Usage / Licence
Usage Considerations
This data is used by land surveyors, engineers and others to determine what legacy Alberta survey control data is available for use.
Contact
Contact Name
Geoff Banham, Project Leader - Geodetic Control, Director of Surveys Office, Lands Policy and Programs Branch, Lands Division, Environment and Parks
Contact Email
Contact Other
DirectorofSurveys@gov.ab.ca