Identification Information:
Citation:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Hartman, G.M.D.
Publication Date: 2017
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Sediment Thickness, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0037
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://ags.aer.ca/document/DIG/DIG_2016_0037.zip
Description:
Abstract:

This grid dataset is part of the 3D hydrostratigraphic model of the Calgary-Lethbridge Corridor (CLC), southwestern Alberta. The grid is a rendering of the thickness and distribution of sediment overlying the CLC bedrock topography.

The thickness and distribution of sediments overlying the bedrock surface in the CLC is highly varied, ranging from less than 1 m to as much as 160 m. These sediments include Neogene fluvial deposits, glacigenic materials deposited during Quaternary glaciation, as well as postglacial sediments.

This dataset supplements Alberta Geological Survey (AGS) Report 91 and INF 150, which include a full description of the process used to produce the sediment thickness grid.

Purpose:
To provide the sediment thickness grid from the CLC 3D hydrostratigraphic model, used as a framework for assigning subsurface geological information into hydrogeological maps.
Supplemental Information: Language: In English;
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2013
Ending Date: 2015
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -116
East Bounding Coordinate: -112
North Bounding Coordinate: 52
South Bounding Coordinate: 49
Keywords:
Theme:
Theme Keyword Thesaurus: none
Theme Keyword: 3d models
Theme Keyword: aquifer material
Theme Keyword: boreholes
Theme Keyword: buried valleys
Theme Keyword: geology
Theme Keyword: gis data
Theme Keyword: hydrogeology
Theme Keyword: hydrostratigraphy
Theme Keyword: preglacial drainage
Theme Keyword: preglacial topography
Theme Keyword: thalwegs
Place:
Place Keyword Thesaurus: none
Place Keyword: 82g
Place Keyword: 82h
Place Keyword: 82i
Place Keyword: 82j
Place Keyword: 82o
Place Keyword: 82p
Place Keyword: alberta
Place Keyword: calgary
Place Keyword: canada
Place Keyword: lethbridge
Place Keyword: southern alberta
Access Constraints: Public
Use Constraints:
Acknowledgement of the Alberta Energy Regulator/Alberta Geological Survey as the originator/source of this information is required as described in the Open Government License - Alberta.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Geological Survey
Contact Person: AGS Information Manager
Contact Position: AGS Information Manager
Contact Address:
Address Type: mailing and physical
Address: Alberta Energy Regulator
Address: 4th Floor, Twin Atria Building
Address: 4999-98 Avenue NW
City: Edmonton
State or Province: Alberta
Postal Code: T6B 2X3
Country: Canada
Contact Voice Telephone: (780) 638-4491
Contact Facsimile Telephone: (780) 422-1459
Contact Electronic Mail Address: AGS-Info@aer.ca
Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Liggett, J.E.
Originator: Hartman, G.M.D.
Originator: Nakevska, N.
Originator: Mei, S.
Originator: MacCormack, K.E.
Originator: Palombi, D.
Publication Date: 201702
Title:
Regional Geological and Hydrogeological Characterization of the Calgary-Lethbridge Corridor in the South Saskatchewan Regional Planning Area
Geospatial Data Presentation Form: document
Series Information:
Series Name: Report
Issue Identification: REP 91
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Other Citation Details: ISBN: 978-1-4601-0158-2
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Hartman, G.M.D.
Publication Date: 2017
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Bedrock Topography, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0036
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Paskapoo / Porcupine Hills Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0023
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Scollard / Willow Creek Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0024
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Battle Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0025
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Horseshoe Canyon / St. Mary River Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0026
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Bearpaw Hydrostratigraphic Unit (Upper Tongue), Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0027
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Horseshoe Canyon / St. Mary River Hydrostratigraphic Unit (Strathmore Member), Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0028
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Bearpaw Hydrostratigraphic Unit (Lower Tongue and Undifferentiated Portion), Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0029
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Belly River Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0030
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Foremost Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0031
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of the Pakowki / Upper Lea Park Hydrostratigraphic Unit, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0032
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Hartman, G.M.D.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of Hydrostratigraphic Unit S2 Within the Neogene-Quaternary Succession, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0033
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Hartman, G.M.D.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of Hydrostratigraphic Unit C Within the Neogene-Quaternary Succession, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0034
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Hartman, G.M.D.
Publication Date: 2016
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Top of Hydrostratigraphic Unit S1 Within the Neogene-Quaternary Succession, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0035
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.aer.ca
Data Quality Information:
Attribute Accuracy:
Attribute Accuracy Report:
AWWID well records were considered to be of relatively low quality, often containing inaccurate location and lithology data submitted by water well contractors. Lithological descriptions from the 2013 version of Alberta Environment’s Alberta Water Well Information Database (AWWID) were used to generate bedrock topography surface picks to define the bedrock topography structure top grid. The data were checked for obvious errors, including incorrect or ambiguous lithological descriptions and anomalous location information. Apparent errors were flagged and compared with higher quality data where it was available, i.e., moderate- to high-quality AGS borehole/ field data, geophysical logs, and previously published geological and hydrogeological maps.
Logical Consistency Report:
The gridded data indicates the thickness of sediments in metres that lie on the CLC bedrock topography. NODATA_value for the ASCII grid outside of the study area domain is coded as -9999.
Completeness Report:

17252 data points of varying quality and coverage were compiled for the construction of the CLC bedrock topography. The most significant data source was the extensive collection of well records compiled in the AWWID. The AWWID has abundant, relatively low quality data records, which include location inaccuracies resulting in numerous wells with the same location information. In cases of collocated data, where three or more wells with the same location information were encountered in the database, the deepest and shallowest well logs were selected to include wells that were completed in bedrock and to also characterize near surface sediments. The remaining duplicate wells were omitted.

The 17252 data points were used to model the CLC bedrock topography. The CLC sediment thickness grid was created by subtracting the CLC bedrock topography grid from the Sustainable Resource Development (SRD; 25 m cell-size) digital elevation model (DEM) (resampled to a 400 m grid cell size), which represents the present-day land surface.

Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report:
x,y coordinates of water wells exported from the AWWID are inexact and typically located to the centroid of a quarter section. The locations were converted to geographic coordinates and were not checked for accuracy.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report:

All borehole data from the AWWID were sampled to the 25 m Provincial Digital Elevation Model (DEM) to provide a borehole top elevation (m asl) to correlate lithological descriptions between boreholes to create the CLC bedrock topography. This process was necessary as the borehole top elevation of AWWID water wells, in many cases, was not available/recorded or verified, and if reported was estimated from a topographic map, field investigation or handheld Global Positional System (GPS) device. Elevation values of moderate- and high-quality data from AGS boreholes and field sites, geophysical logs, and previously published geological and hydrogeological maps were also checked with the DEM to verify elevation accuracy and modified to match the DEM, if necessary.

The vertical accuracy of the 25 m DEM is stated as 5 m @ 90% in the CLC derived from 1:60 000 aerial photographs using photogrammetric methods.

Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment and Parks
Publication Date: 2015
Title: Provincial DEM, digital topographic data (GIS data, Arc/Info grid)
Geospatial Data Presentation Form: raster digital data
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: AltaLIS
Online Linkage: \\agsfsrv\shares\DEM\SRD_DEM\dem_srd25m
Source Scale Denominator: 0
Type of Source Media: online
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2005
Ending Date: n/a
Source Currentness Reference: ground condition
Source Citation Abbreviation: DEM
Source Contribution: The grid defines the land surface topography in the CLC.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: MacCormack, K.E.
Originator: Atkinson, N.
Originator: Lyster, S.
Publication Date: 2015
Title: Bedrock Topography of Alberta
Geospatial Data Presentation Form: map
Series Information:
Series Name: Map
Issue Identification: MAP 602
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Other Citation Details: Scale 1:1000000. ISBN: 978-1-4601-0121-6
Source Scale Denominator: 0
Type of Source Media: online
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 201309
Ending Date: 201503
Source Currentness Reference: ground condition
Source Citation Abbreviation: Bedrock Topography of Alberta
Source Contribution:
A subset of countour data was taken from the Bedrock Topography of Alberta and used as supplementary data for the CLC bedrock topography.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Environment
Publication Date:
Title: Alberta Water Well Information Database
Geospatial Data Presentation Form: tabular digital data
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: Not available online.
Source Scale Denominator: 0
Type of Source Media: database
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2013
Ending Date: n/a
Source Currentness Reference: ground condition
Source Citation Abbreviation: AWWID
Source Contribution: Water well lithological descriptions.
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Atkinson, L.A.
Originator: Hartman, G.M.D.
Publication Date: 2017
Title:
Calgary-Lethbridge Corridor Hydrostratigraphic Model - Bedrock Topography, Southwestern Alberta (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2016-0036
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Source Scale Denominator: 0
Type of Source Media: online
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2013
Ending Date: 2015
Source Currentness Reference: ground condition
Source Citation Abbreviation: CLC bedrock topography
Source Contribution: Gridded bedrock topography in the CLC
Process Step:
Process Description:

This gridded dataset was derived by subtracting the computer-generated geostatistical model of the CLC Bedrock Topography from the Sustainable Resource Development (SRD; 25 m cell-size) digital elevation model (DEM) (resampled to a 400 m grid cell size), which represents the present-day land surface.

Data used to construct the CLC bedrock topography were derived from a variety of low- to high-quality borehole data, including lithologs submitted by water well contractors and compiled by the Alberta Water Well Information Database (AWWID), downhole geophysical logs collected from water wells, AGS borehole logs and field data; stratigraphic picks made from oil and gas geophysical logs by AGS geologists; contour data from the Bedrock Topography of Alberta; and the DEM, where known bedrock outcrop locations were made equal to the elevation value of the DEM.

Process Date: 2014
Spatial Data Organization Information:
Direct Spatial Reference Method: Raster
Raster Object Information:
Raster Object Type: Grid Cell
Row Count: 623
Column Count: 369
Vertical Count: 1
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Map Projection:
Map Projection Name: Transverse Mercator
Transverse Mercator:
Scale Factor at Central Meridian: 0.999200
Longitude of Central Meridian: -115.000000
Latitude of Projection Origin: 0.000000
False Easting: 500000.000000
False Northing: 0.000000
Planar Coordinate Information:
Planar Coordinate Encoding Method: row and column
Coordinate Representation:
Abscissa Resolution: 0.000000002219135986081256
Ordinate Resolution: 0.000000002219135986081256
Planar Distance Units: metres
Geodetic Model:
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257222
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Datum Name: Canadian Geodetic Vertical Datum of 1928
Altitude Resolution: 0
Altitude Distance Units: metres
Altitude Encoding Method: Attribute values
Entity and Attribute Information:
Overview Description:
Entity and Attribute Overview:
Grid cell values represent sediment thickness in metres. Values are floating point data type. Null data are coded '-9999'.
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Geological Survey
Contact Person: AGS Information Manager
Contact Position: AGS Information Manager
Contact Address:
Address Type: mailing and physical
Address: Alberta Energy Regulator
Address: 4th Floor, Twin Atria Building
Address: 4999-98 Avenue NW
City: Edmonton
State or Province: Alberta
Postal Code: T6B 2X3
Country: Canada
Contact Voice Telephone: (780) 638-4491
Contact Facsimile Telephone: (780) 422-1459
Contact Electronic Mail Address: AGS-Info@aer.ca
Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.
Distribution Liability:
The Alberta Energy Regulator/Alberta Geological Survey (AER/AGS) licenses this information under the Open Government License - Alberta. Any references to proprietary software in our documentation, and/or any use of proprietary data formats in our releases, do not constitute endorsement by the AER/AGS of any manufacturer's product.
Metadata Reference Information:
Metadata Date: 20170315
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Geological Survey
Contact Person: AGS Information Manager
Contact Position: AGS Information Manager
Contact Address:
Address Type: mailing and physical
Address: Alberta Energy Regulator
Address: 4th Floor, Twin Atria Building
Address: 4999-98 Avenue NW
City: Edmonton
State or Province: Alberta
Postal Code: T6B 2X3
Country: Canada
Contact Voice Telephone: (780) 638-4491
Contact Facsimile Telephone: (780) 422-1459
Contact Electronic Mail Address: AGS-Info@aer.ca
Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Metadata Access Constraints: none
Metadata Use Constraints: none