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Search a listing of Government of Alberta open datasets and publications.
Views: 5
Updated
March 11, 2021
Description
Alberta Survey Control Marker (ASCM) index maps are a graphical representation of the provincial spatial referencing system. The index maps display the location of integrated ASCMs in relation to...
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Views: 2
Updated
March 11, 2021
Description
The Canadian Spatial Reference System (CSRS) derivation of the North American Datum 1983 (NAD83) was first implemented for Alberta Survey Control Markers (ASCMs) in 1999. Since then, Alberta has...
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Views: 2
Updated
March 11, 2021
Description
In Alberta there are two official vertical datums; The Canadian Geodetic Vertical Datum of 2013 (CGVD2013) and the Canadian Geodetic Vertical Datum of 1928 (CGVD28). This fact sheet describes both...
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Views: 9
Updated
March 11, 2021
Description
This fact sheet discusses Grid Bearings and Astronomic Azimuths and their representation on Alberta Survey Control Marker (ASCM) ID cards.