Identification Information:
Citation:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Singh, A.
Publication Date: 2021
Title: Distribution of Hydraulic Head in the Dunvegan Hydrostratigraphic Unit (gridded data, ASCII format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2020-0030
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://ags.aer.ca/document/DIG/DIG_2020_0030.zip
Description:
Abstract:

This grid represents the hydraulic head distribution in the Dunvegan hydrostratigraphic unit (HSU). It is a result of a geostatistical model which was constructed using publicly available data from the following sources:

1. Alberta Environment and Parks (AEP) Alberta Water Well Information Database (AWWID)

2. Pressure data from drillstem tests from oil and gas wells

The hydraulic head surface was mapped at a regional scale using many years of data, thus providing a general indication of regional groundwater flow within the unit rather than site-specific values.

Purpose: To provide the regional hydraulic head surface for the Dunvegan HSU.
Supplemental Information: Language: In English;
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1961
Ending Date: 2013
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -120
East Bounding Coordinate: -114
North Bounding Coordinate: 59
South Bounding Coordinate: 53
Keywords:
Theme:
Theme Keyword Thesaurus: none
Theme Keyword: dunvegan formation
Theme Keyword: geology
Theme Keyword: gis data
Theme Keyword: hydraulic head
Theme Keyword: hydrogeology
Theme Keyword: potentiometric surface
Place:
Place Keyword Thesaurus: none
Place Keyword: 83e
Place Keyword: 83f
Place Keyword: 83g
Place Keyword: 83j
Place Keyword: 83k
Place Keyword: 83l
Place Keyword: 83m
Place Keyword: 83n
Place Keyword: 83o
Place Keyword: 84b
Place Keyword: 84c
Place Keyword: 84d
Place Keyword: 84e
Place Keyword: 84f
Place Keyword: 84g
Place Keyword: 84j
Place Keyword: 84k
Place Keyword: 84l
Place Keyword: alberta
Place Keyword: canada
Place Keyword: northwestern alberta
Place Keyword: west central 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: Singh, A.
Publication Date: 2021
Title:
Distribution of Hydraulic Head in the Dunvegan Hydrostratigraphic Unit (tabular data, tab-delimited format)
Geospatial Data Presentation Form: tabular digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2020-0031
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: https://www.ags.aer.ca
Cross Reference:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Singh, A.
Originator: Lemay, T.G.
Publication Date: 2021
Title: Distribution of Hydraulic Head in the Dunvegan Hydrostratigraphic Unit
Geospatial Data Presentation Form: map
Series Information:
Series Name: Map
Issue Identification: MAP 609
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Other Citation Details: ISBN:978-1-4601-4921-8
Online Linkage: https://www.ags.aer.ca
Data Quality Information:
Logical Consistency Report: Grid cell spacing is 500 m by 500 m. Grid cells with no data are assigned the value -9999.
Completeness Report:
The final hydraulic head map covers the extent of the Dunvegan HSU which was determined based on the lithostratigraphy and hydraulic properties.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report:
The interpolated surface in the vicinity of water wells may have up to 400 m (occasionally 800 m) of horizontal error due to the positional accuracy of the water wells. Wells in the Alberta Water Well Information Database (AWWID) are frequently placed in the middle of a quarter section (occasionally a section) because their exact location within the quarter section (or section) is not known.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report:

See AER/AGS DIG 2020-0031 (data points) for details on the vertical accuracy of the input data, which is affected by the locational accuracy of the wells.

The following statistics describes the accuracy of the final grid before smoothing:

Root mean squared error : 18.8 m

Mean error : 1.05

Mean standardized error: 0.02

Root mean square standardized error: 1.19

Average standard error: 19.18

Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: Alberta Energy Regulator
Originator: Alberta Geological Survey
Originator: Singh, A.
Publication Date: 2021
Title:
Distribution of Hydraulic Head in the Dunvegan Hydrostratigraphic Unit (tabular data, tab-delimited format)
Geospatial Data Presentation Form: tabular digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2020-0031
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: S:\AGS_Publication_Submission\DIG_7695_Singh_Dunvegan_HH_Tabular
Source Scale Denominator: 0
Type of Source Media: online
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1961
Ending Date: 2015
Source Currentness Reference: ground condition
Source Citation Abbreviation: DIG 2020-0031
Source Contribution: Hydraulic head data.
Process Step:
Process Description:

Selection criteria for data from AWWID and oil and gas well DSTs, as well as the final data set used for interpolation of this grid are documented in the metadata for AER/AGS DIG 2020-0031.

Step 1 (Modelling the surface): A simple kriging algorithm was used in the ArcMap Geostatistical Analyst extension to interpolate the hydraulic head values and create a grid of the head surface of the Dunvegan HSU.

Method Report:

Method: Kriging

Type: Simple

Transformation: Normal Score

Output type: Prediction

Trend type: None

Variogram: Semivariogram

Number of lags: 12

Lag size: 0.2693

Nugget: 0.016

Measurement error percentage: 100

Model type: Stable

Range: 2.154

Anisotropy: No

Partial sill: NO

Total points: 102

Coordinate System:GCS_North_American_1983

Datum: D_North_American_1983

Neighbourhood type: Standard

Root mean square error: 1.19

Mean: 1.05

Step 2 (Grid Smoothing): The grid was smoothed using focal statistics which calculates for each input cell location a statistic of the values within a specified neighbourhood around it, in this case 4-cell radius. Smoothing the surface used the average cell value.

Step 3 (Grid Alterations): The final grid was clipped based on the extent of the Dunvegan HSU and spatial distribution of data.

Source Used Citation Abbreviation: AER/AGS DIG 2018-0005
Process Date: 2016
Spatial Data Organization Information:
Direct Spatial Reference Method: Raster
Raster Object Information:
Raster Object Type: Pixel
Row Count: 762
Column Count: 1432
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Map Projection:
Map Projection Name: NAD 1983 Transverse Mercator
Transverse Mercator:
Scale Factor at Central Meridian: 0.9992
Longitude of Central Meridian: -115.0
Latitude of Projection Origin: 0.0
False Easting: 500000.0
False Northing: 0.0
Planar Coordinate Information:
Planar Coordinate Encoding Method: coordinate pair
Coordinate Representation:
Abscissa Resolution: 0.000000002219135986081256
Ordinate Resolution: 0.000000002219135986081256
Planar Distance Units: metre
Geodetic Model:
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System of 1980
Semi-Major Axis: 6378137.0
Denominator of Flattening Ratio: 298.257222101
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Datum Name: Canadian Geodetic Vertical Datum of 1928
Altitude Resolution: 10
Altitude Distance Units: metres
Altitude Encoding Method: Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information:
Overview Description:
Entity and Attribute Overview:
Grid cell values represent the hydraulic head in the Dunvegan HSU, expressed as elevations in metres above mean sea level, Canadian Geodetic Vertical Datum of 1928. Values are floating point data type.
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: 20210616
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