Aquifer Vulnerability to Saltwater Intrusion – Pumping hazard

Published by the Ministry of Environment - Water Protection and Sustainability
Licensed under Open Government License - British Columbia

The dataset was developed as part of the Risk Assessment Framework for Coastal Bedrock Aquifers project completed by Simon Fraser University, for the BC Ministry of Environment and the BC Ministry of Forests, Lands and Natural Resource Operations. Features in the dataset show the vulnerability of coastal aquifers on the Gulf Islands to salt water intrusion, based on their intrinsic susceptibility (aquifer properties such as distance from the coast and topography) and groundwater pumping (well density and type of use).

This link refers to the Master of Science Thesis Report prepared by Jeanette Klassen in 2015 as a component of the collaborative study between Simon Fraser University and the Province of British Columbia.

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -140.0° to -125.0°

Additional Information

Purpose

The layer may be used to evaluate aquifers or areas that are at higher risk of saltwater intrusion, in order to guide resource management decisions.
Data Quality
Lineage StatementThis dataset was modeled using the sources listed below: i) Klassen, J. (2015) Assessing the risk of saltwater intrusion on the Gulf Islands, BC. M.Sc. thesis, Department of Earth Sciences, Simon Fraser University, 148 pp.; ii) British Columbia Ministry of Environment (BC MoE) (2014) WELLS database. Water Stewardship Division, BC.; iii) Bednarski, J.M. and Rogers. (2012) LiDAR and digital aerial photography of Saanich Peninsula, selected Gulf Islands, and coastal regions from Mill Bay to Ladysmith, Southern Vancouver Island, British Columbia. Geological Survey of Canada. Open File 7229; iv) Carignan, K.S., Eakins, B.W., Love, M.R., Sutherland, M.G. and McLean, S.J. (2013) British Columbia, 3 arc-second MSL DEM. Prepared for National Oceanic and Atmospheric Administration (NOAA), Pacific Marine Environmental Laboratory (PMEL) by the NOAA National Geophysical Data Center (NGDC); v) Kennedy, G.W. (2012) Development of a GIS-based approach for the assessment of relative seawater intrusion vulnerability in Nova Scotia, Canada. Nova Scotia Department of Natural Resources; vi) Natural Resources Canada (2013) Canadian digital surface model. Accessed: September 2015. Retrieved: http://geogratis.gc.ca/site/eng/extraction.

More Information

Contact Information

NameMike Wei (businessExpert)
EmailMike.Wei@gov.bc.ca
OrganizationMinistry of Environment
Sub-OrganizationWater Protection and Sustainability
NameSylvia Barroso (pointOfContact)
EmailSylvia.Barroso@gov.bc.ca
OrganizationMinistry of Forests, Lands and Natural Resource Operations
Sub-OrganizationRegional Operations - West Coast

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2017-03-31
Record Last Modified 2017-04-06
Resource Status onGoing

Object Description

Object Name: WHSE_WATER_MANAGEMENT.GW_AQFR_VULN_SWI_PUMP_SP

Short Name: AQ_SWI_P
Comments: The dataset was developed as part of the Risk Assessment Framework for Coastal Bedrock Aquifers project completed by Simon Fraser University, for the Ministry of Environment and the Ministry of Forests, Lands and Natural Resource Operations. The layer shows the vulnerability of coastal aquifers on the southern Gulf Islands to salt water intrusion, based on their intrinsic susceptibility (aquifer properties such as distance from the coast and groundwater flux) and groundwater pumping (well density and type of use). The layer may be used to evaluate aquifers or areas that are at higher risk of saltwater intrusion, in order to guide resource management decisions.

Column Name Short Name Data Type Data Precision Comments
AQFR_VULN_SWI_PUMP_ID AQSWIP_ID NUMBER 10 AQFR_VULN_SWI_PUMP_ID is a system generated unique identification number.
RISK_RATING RISK_RTNG NUMBER 2 RISK_RATING is a numeric rating of the saltwater intrusion risk from pumping hazards, on a scale of 1 to 10. (Derived from an aggregate model of hyrdological features.)
RISK_CLASS RISK_CLASS VARCHAR2 30 RISK_CLASS is a qualitative classification of the RISK_RATING and includes five clasess: Low (1-2), Moderately Low (3-4), Moderate (5-6), Moderately High (7-8), and High (9-10).
ASSESSMENT_YEAR ASSESS_YR NUMBER 4 ASSESSMENT_YEAR is the year that the saltwater intrusion vulnerability model was run. This indicates the currency of data that was used in the model.
LOCATION_NAME LOC_NAME VARCHAR2 200 LOCATION_NAME is the name of the Island or Coastline for which the given polygon is describing saltwater intrusion risk, e.g., Salt Spring Island.
FEATURE_AREA_SQM FEAT_AREA NUMBER 19 FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters.
FEATURE_LENGTH_M FEAT_LEN NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters.
SHAPE SHAPE SDO_GEOMETRY 1 SHAPE is the column used to reference the spatial coordinates defining the feature.
OBJECTID OBJECTID NUMBER 38 OBJECTID is a column required by spatial layers that interact with ESRI ArcSDE. It is populated with unique values automatically by SDE.
SE_ANNO_CAD_DATA ANNO_CAD BLOB 4000 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.

Comments

No comments have been posted yet.