Metadata: Aquifer Confinement Conditions, Groundwater Geoscience Program

Metadata NAP : more info

Identification

Abstract

The confinement describes the types of aquifer: confined, unconfined and semi-confined. Confined aquifer is bounded from above and below by impervious formations. Unconfined aquifer has a water table which serves as its upper boundary. Semi-confined aquifer is in between. Aquifer confinement is derived from geology, stratigraphy and hydrogeological unit thickness. The dataset represents the confinement assessment of the local area over the hydrogeological unit, from a controlled vocabulary.
Status:register onGoing
TitleAquifer Confinement Conditions, Groundwater Geoscience Program
Date2014-09-30 (register publication)
Date2014-09-30 (register creation)
Edition
Edition date
Citation group
register principalInvestigator
NameAlfonso Rivera
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email alfonso.rivera@canada.ca
Telephone
Online Resource
Citation group
register originator
NameEric Boisvert
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email eric.boisvert2@canada.ca
Telephonetelephone voice; 1 (418) 6543705
Online Resource
Citation group
register custodian
NameFrancois Letourneau
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email francois.letourneau@canada.ca
Telephonetelephone voice; 1 (418) 6543826
Online Resource
Citation group
register pointOfContact
Name
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada
Position
Information
AddressDelivery point :
City :
Administrative region :
Postal code :
Country :
Email nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
Telephone
Online Resource
Presentation formregister mapDigital

Goals

The confining conditions were created to provide a regional frame of the aquifer confinement.

Keyword(s)

Thesaurus
TitleGovernment of Canada Core Subject Thesaurus
Date2004 (register creation)
Date2013-05-11 (register publication)
Edition
Edition date
Citation group
register custodian
Name
OrganisationGovernment of Canada; Library and Archives Canada
Position
Information
Typeregister
TermHydrogeology
Spatial representationregister grid
Languageeng; CAN
Languagefra; CAN
Character encodingutf8
Thematic categorygeoscientificInformation
ExtentLocalisation
-144.000000000,41.000000000;-52.000000000,84.000000000
Supplemental information

Distribution

Specific information related to data distribution
Format
NameSQL
Versionnot applicable

Distributor

Contact
register distributor
NameEric Boisvert
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email eric.boisvert2@canada.ca
Telephonetelephone voice; 1 (418) 6543705
Online Resource

Distributor

Contact
register pointOfContact
Name
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada
Position
Information
AddressDelivery point :
City :
Administrative region :
Postal code :
Country :
Email nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
Telephone
Online Resource

Transfer options


Quality


Quality description scope :register series

Lineage

Message Date lineage
Lineage is the description of the sources and steps used to create the current dataset.


Introduction
General processes Creation of confinement data - Milk river Creation of confinement data - Milk river Quadra aquifer confinement raster creation
Process step Sources
The datasets were extracted from all projects constituting this series.
Groundwater mapping projects.
The aquifer was defined as confined except where the Milk River Aquifer outcrops / subcrops. In this area, the confinement conditions have been defined using the following rules: • Unconfined aquifer:Absence of clay and/or silt OR Till thickness is below 3 m • Semi-Confined aquifer: Till and/or clay and/or silt thickness is below 5 m • Confined aquifer: Clay and/or silt thickness is equal or above 5 m
Colton, R.B., Lemke, R.W., and Lindvall, R.M., 1961. Glacial map of Montana east of the Rocky Mountains. U.S. Geological Survey, Miscellaneous Geologic Investigations Map I-327, http://ngmdb.usgs.gov/Prodesc/proddesc_1391.htm Precise date temporal extent is unknown; however the starting date is before 1961.
Fenton, M.M., Walters, E.J., Pawley, S.M., Atkinson, N., Utting, D.J., Mckay, K., 2013. Surficial Geology of Alberta: Ungeneralized Ditial Mosaic. Energy Resources Conservation Board, Alberta Geological Survey, DIG 2013-0001, http://www.ags.gov.ab.ca/publications Precise date temporal extent is unknown; however the starting date is before 2013.
Okulitch AV, Lopez DA, Jerzykiewicz T., 1996. Bedrock geology, Lethbridge, Alberta-Saskatchewan-Montana. Precise date temporal extent is unknown; however the starting date is before 1996.
The aquifer was defined as confined except where the Milk River Aquifer outcrops / subcrops. In this area, the confinement conditions have been defined using the following rules: • Unconfined aquifer:Absence of clay and/or silt OR Till thickness is below 3 m • Semi-Confined aquifer: Till and/or clay and/or silt thickness is below 5 m • Confined aquifer: Clay and/or silt thickness is equal or above 5 m
Saskatchewan Energy and Ressources, 2015. Surficial Geology of Saskatchewan. http://www.infomaps.gov.sk.ca/website/sir_geological_atlas/viewer.htm Precise date temporal extent is unknown; however the starting date is before 2015.
To define the Quadra Sand Aquifer confinement, four hydrogeological unit's thickness raster were used: Capilano-Salish, Capilano, Vashon Coarse and Vashon Till ones. These units were used since they overly the Quadra Sand Aquifer. For each raster, the cell values were converted to an integer by truncation, using ""Int"" tool. Two fields were then added to the attribute table: ""Confi"" and ""Confinement"". The first field ""Confi"" designates the aquifer conditions: 1 for free aquifer condition; 2 for semi-confined conditions and 3 for confined conditions. Each condition is described below: &bull; Free aquifer: gravel or/and sand; till with thickness < 3 m; &bull; Semi-confined aquifer: till with thickness > 3 m; clay or/and silt with thickness < 5 m; &bull; Confined aquifer: clay or/and silt with thickness &#8805; 5 m. In the second field, ""Confinement"", the ""Confi"" value was multiplied by a weight defined on aquifer conditions: 1 for free aquifer condition; 5 for semi-confined aquifer and 10 for confined conditions. The ""lookup"" tool was then used to create a new raster by looking up values found in the confinement field in the table of the input raster. The ""lookup"" field was the confinement. The resulting raster had two fields: count and value, which designates the confinement value. The value field was then reclassified (using the reclassify tool), thus the NoData pixels were assigned a new value of ""0"". This procedure was applied for the four hydrogeological units. These latter were then summed, using the tool ""Raster Calculator"". The resulting raster exhibits the summed confinement of the four hydrogeological units (field Value). A field ""Confinement"" is created and the values are classified as follow: - Confined: value &#8805; 30 - Semi-confined: value &#707; 10 et &#706; 30 - Unconfined: value &#8804; 10
Benoit, N. and Paradis, D., 2015. Three dimensional groundwater flow model of the Nanoose-Deep Bay area, Nanaimo Lowland, British Columbia; Geological Survey of Canada, Open File 7845, 1 zip file. doi: 10.4095/297046


Technical details and constraints

File identifier64ae8ff7-5cf0-0da4-e2e9-c41558e24e28
Languageeng; CAN
Character encodingregister utf8
Hierarchical classificationregister series
Date2017-04-07
Metadata standardNorth American Profile of ISO 19115:2003 - Geographic information - Metadata
VersionCAN/CGSB-171.100-2009
Constraints
Update frequencyregister asNeeded

Regionalisation

Metadata are available in those languages (You can use language menu item in the top menu bar to switch language):
Language code Pays Encodage
register Frenchregister Canadaregister utf8

Geographic Reference System

Reference System codeEPSG:4326
Registerhttp://www.epsg-registry.org/
Version6.14

Metadata Contact

register author
NameFrancois Letourneau
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email francois.letourneau@canada.ca
Telephonetelephone voice; 1 (418) 6543826
Online Resource
register pointOfContact
Name
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada
Position
Information
AddressDelivery point :
City :
Administrative region :
Postal code :
Country :
Email nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
Telephone
Online Resource