Metadata: 3D hydrogeological model of the Chaudiere River watershed

Metadata NAP : more info

Identification

Abstract

A joint hydrogeological assessment study between Université Laval and the Geological Survey of Canada (GSC) has been conducted in the Chaudière River watershed. The regional aquifer system is dominated by the underlying rock substratum of the Appalachian province and Quaternary aquifer units. The degree of confinement of the fractured aquifers is controlled by the overlying glacial, marine and fine lacustrine sediments of variable thicknesses. The groundwater circulation within the fractured aquifers predominantly takes place in the uppermost part of the fractured water-bearing units, where fracture density is highest. A 3D numerical finite element model was built with the Watflow model (Molson et al., 2002) for simulating the regional groundwater flow system. Although this model is mainly based on the model of Brun Koné (2013), some changes (eg: mesh, calibration criteria) have been made compared to the original version with the most recent data and results presented here.
Status:register completed
Title3D hydrogeological model of the Chaudiere River watershed
Date2015-01-01 (register publication)
Date2015-01-01 (register creation)
Edition
Edition date
Citation group
register principalInvestigator
NameNicolas Benoît
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 nicolas.benoit@canada.ca
Telephonetelephone voice; 1 (418) 6543646
Online Resource
Citation group
register originator
NameMathy Yasmina Brun Koné
OrganisationUniversité Laval, Département de géologie et de Génie géologique
Position
Information
AddressDelivery point :
City : Québec Québec
Administrative region : Qc Qc
Postal code :
Country :
Email
Telephone
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 modelDigital
SeriesOpen File7734

Related publication

  • Benoit, N., Molson, J.W., Brun Koné, M.Y. et Nastev, M., 2015. Modèle hydrogéologique 3D du bassin versant de la rivière Chaudière; Commission géologique du Canada, Dossier public 7734, 32 p. doi:10.4095/295674 Brun Koné, M. Y. (2013). Développement d'un modèle numérique d'écoulement 3D des eaux souterraines du bassin versant de la Rivière Chaudière, Québec. M.Sc. Québec, Université Laval, Département de géologie et de génie géologique. 63 pages.

Goals

The main objective of the study was to gain further understanding into the groundwater resources within the region.

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
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister product
Term3D Model
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermAquifer
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermChaudière River
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermGroundwater
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermGroundwater flow
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermHELP
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermHydrogeology
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermQuaternary
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister theme
TermWatershed
Languagefra; CAN
Character encodingutf8
Thematic categorygeoscientificInformation
ExtentLocalisation
-71.580000000,45.170000000;-70.170000000,46.830000000
Supplemental information

Distribution

Specific information related to data distribution
Format
NameWATFLOW
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 dataset

Lineage

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


Introduction
General process description
Process step Sources
The mesh and maps were primarily created in ArcGIS and Triangle. Watflow software (Molson et al., 2002) was used to simulate groundwater flow of the Chaudière River watershed. The surface of the three-dimensional (3D) model corresponds to the digital elevation model (DEM). The base of the model is set to a depth of 300 m with respect to the DEM. This depth is considered below the large fractured zone, where groundwater is almost immobile. The model has 29 finite element layers of which 10 represent the bedrock, 18 represent the unconsolidated deposits, and the last one represents the surface layer (recharge spreading layer). The mesh of the model is composed of 119,447 two-dimensional (2D) triangular elements on the horizontal plane thus forming a total of 3,463,963 3D prismatic triangular elements with 1,815,720 nodes. The boundary conditions of the model are represented by groundwater divides, which results in a no flow boundary in the model. Constant head corresponding to the DEM elevations were imposed on the Chaudière River and its main tributaries. A no flow condition has been imposed at the lower limit of the model. On the surface of the model, a recharge rate was imposed according to the estimates obtained by Benoît et al. (2012) with the HELP infiltration model (Schroeder et al., 1994). The major municipal wells with available information were integrated into the model as localized pumping, while water consumption from private and agricultural wells was converted into an uniform water quantity removed directly from the recharge. Horizontal hydraulic conductivity and vertical anisotropy are the calibration parameters of the model. Seven hydrostratigraphic units were identified in the unconsolidated deposits. The hydraulic conductivities of each unit were calibrated with hydraulic head. Unit [Kx (m/s) / Kz (m/s)] Organics [1x 10-5 / 1x10-5] Sand [1x10-6 / 1x10-6] Clay [1x 10-9 / 1x 10-9] Gravel [1x 10-3 / 1x 10-3] Permeable till [1x 10-6 / 1x 10-6] Till [7x10-7 / 5x10-7] Bedrock [1x10-7 / 1x10-7] The bedrock at the bottom of the unconsolidated deposits represents the highly fractured bedrock and is considered as a unit of unconsolidated deposits. Estimated hydraulic conductivity values generally range from 1x10-7 to 1x10-5 m/s for the first 100 meters of bedrock. The hydraulic conductivity values down to the model base (300 m) were defined by linear extrapolation and decreased to 1x10-10 m/s at the lower limit. The unconsolidated units are represented by 18 layers of elements. The layers of the model do not necessarily correspond exactly to the various hydrostratigraphic units and each layer of elements of the model may contain different hydrostratigraphic units. When hydrostratigraphic units are defined, the layers of elements follow these units as much as possible.
The mesh and maps were primarily created in ArcGIS and Triangle. Watflow software (Molson et al., 2002) was used to simulate groundwater flow of the Chaudière River watershed. The surface of the three-dimensional (3D) model corresponds to the digital elevation model (DEM). The base of the model is set to a depth of 300 m with respect to the DEM. This depth is considered below the large fractured zone, where groundwater is almost immobile. The model has 29 finite element layers of which 10 represent the bedrock, 18 represent the unconsolidated deposits, and the last one represents the surface layer (recharge spreading layer). The mesh of the model is composed of 119,447 two-dimensional (2D) triangular elements on the horizontal plane thus forming a total of 3,463,963 3D prismatic triangular elements with 1,815,720 nodes. The boundary conditions of the model are represented by groundwater divides, which results in a no flow boundary in the model. Constant head corresponding to the DEM elevations were imposed on the Chaudière River and its main tributaries. A no flow condition has been imposed at the lower limit of the model. On the surface of the model, a recharge rate was imposed according to the estimates obtained by Benoît et al. (2012) with the HELP infiltration model (Schroeder et al., 1994). The major municipal wells with available information were integrated into the model as localized pumping, while water consumption from private and agricultural wells was converted into an uniform water quantity removed directly from the recharge. Horizontal hydraulic conductivity and vertical anisotropy are the calibration parameters of the model. Seven hydrostratigraphic units were identified in the unconsolidated deposits. The hydraulic conductivities of each unit were calibrated with hydraulic head. Unit [Kx (m/s) / Kz (m/s)] Organics [1x 10-5 / 1x10-5] Sand [1x10-6 / 1x10-6] Clay [1x 10-9 / 1x 10-9] Gravel [1x 10-3 / 1x 10-3] Permeable till [1x 10-6 / 1x 10-6] Till [7x10-7 / 5x10-7] Bedrock [1x10-7 / 1x10-7] The bedrock at the bottom of the unconsolidated deposits represents the highly fractured bedrock and is considered as a unit of unconsolidated deposits. Estimated hydraulic conductivity values generally range from 1x10-7 to 1x10-5 m/s for the first 100 meters of bedrock. The hydraulic conductivity values down to the model base (300 m) were defined by linear extrapolation and decreased to 1x10-10 m/s at the lower limit. The unconsolidated units are represented by 18 layers of elements. The layers of the model do not necessarily correspond exactly to the various hydrostratigraphic units and each layer of elements of the model may contain different hydrostratigraphic units. When hydrostratigraphic units are defined, the layers of elements follow these units as much as possible.


Technical details and constraints

File identifierc14c09a2-22a2-8218-ef9c-e75ccdc54d28
Languageeng; CAN
Character encodingregister utf8
Hierarchical classificationregister dataset
Date2017-03-21
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:26919
Registerhttp://www.epsg-registry.org/
Version6.14

Metadata Contact

register pointOfContact
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