TRSPA SWP Groundwater Vulnerable Scoring Areas
Polygon layer displaying the vulnerability scores affecting well head protection areas in the Toronto and Region Source Proptection Area (TRSPA)
Entity Name: SWP VSA Groundwater
Table Name: SWP_VSA_GROUNDWATER_FT
A feature representing a vulnerable scoring area (VSA) that affects Groundwater. A vulnerable score is a number, between 0.1 and 10, representing how easily a well or intake can become polluted with a contaminant. The higher the score, the greater the contamination risk. Both zones and scores are important to determine how the plan treats your proposed activity (i.e., landfill site). Shows how susceptible a drinking water source is to contamination. In general, WHPA and IPZ that score 8 and above are very vulnerable and certain activities will be prohibited or required to be managed more effectively. 0 - 3.9: water sources in this area are least vulnerable to contamination. 4 - 7.9: water sources in this area are less vulnerable to contamination. 8 - 10: water sources in this area are vulnerable to contamination.
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ATTRIBUTE/COLUMN NAME
DATATYPE
REQ
DESCRIPTION
1
OGF ID
OBJECTID
NUMBER(13)
Yes
A unique numeric provincial identifier assigned to each object.
2
Source Protection Area ID
SPA_ID
NUMBER(2)
Yes
Identifier for the source protection area that provided the original data about the feature.
3
VSA WHPA ID
VSA_WHPA_ID
NUMBER(13)
Yes
WHPA_ID in the VSA Groundwater class. Foreign key from the Wellhead Protection Area layer.
4
Intrinsic Vulnerable Level
INTRINSIC_VULNERABLE_LEVEL
VARCHAR2(10)
Yes
A broad grouping of vulnerability values into levels of High, Medium, and Low. This will be derived from grouping index values for ISI (Intrinsic Susceptibility Index) and AVI (Aquifer Vulnerability Index) or grouping years from SWAT (Surface to well advection time).
VALID VALUES:
Low
Medium
High
5
Vulnerability Score
VULNERABILITY_SCORE
NUMBER(2)
Yes
Ranges from 2,4,6,8 or10, with 10 being most vulnerable of the 5 values. Technical rules outline how to assign this, typically based on the Time of Travel zone and/or the relative Vulnerability Level.
VALID VALUES:
2
4
6
8
10
6
WHPA_SCORE
VARCHAR2(2)
Yes
The WHPA zone (A, B, C, D) associated with this vulnerability score
7
Wellfield
VARCHAR2(50)
No
Local name of water system
Datasets available for download
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TRSPA SWP Groundwater Vulnerable Scoring Areas (VSA)Feature Layer
Layer 0 via ArcGIS REST API
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TRSPA SWP Groundwater Vulnerable Scoring Areas...HTML
Explore TRSPA SWP Groundwater Vulnerable Scoring Areas (VSA) on ArcGIS Hub
Additional Info
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| Last Updated | May 19, 2026, 16:31 (UTC) |
| Created | May 19, 2026, 16:31 (UTC) |
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Domain / Topic
Domain or topic of the dataset being cataloged.
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Title
Title for the Dataset.
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TRSPA SWP Groundwater Vulnerable Scoring Areas |
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Description
A description of the dataset.
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Polygon layer displaying the vulnerability scores affecting well head protection areas in the Toronto and Region Source Proptection Area (TRSPA) Entity Name: SWP VSA Groundwater Table Name: SWP_VSA_GROUNDWATER_FT A feature representing a vulnerable scoring area (VSA) that affects Groundwater. A vulnerable score is a number, between 0.1 and 10, representing how easily a well or intake can become polluted with a contaminant. The higher the score, the greater the contamination risk. Both zones and scores are important to determine how the plan treats your proposed activity (i.e., landfill site). Shows how susceptible a drinking water source is to contamination. In general, WHPA and IPZ that score 8 and above are very vulnerable and certain activities will be prohibited or required to be managed more effectively. 0 - 3.9: water sources in this area are least vulnerable to contamination. 4 - 7.9: water sources in this area are less vulnerable to contamination. 8 - 10: water sources in this area are vulnerable to contamination. # ATTRIBUTE/COLUMN NAME DATATYPE REQ DESCRIPTION 1 OGF ID OBJECTID NUMBER(13) Yes A unique numeric provincial identifier assigned to each object. 2 Source Protection Area ID SPA_ID NUMBER(2) Yes Identifier for the source protection area that provided the original data about the feature. 3 VSA WHPA ID VSA_WHPA_ID NUMBER(13) Yes WHPA_ID in the VSA Groundwater class. Foreign key from the Wellhead Protection Area layer. 4 Intrinsic Vulnerable Level INTRINSIC_VULNERABLE_LEVEL VARCHAR2(10) Yes A broad grouping of vulnerability values into levels of High, Medium, and Low. This will be derived from grouping index values for ISI (Intrinsic Susceptibility Index) and AVI (Aquifer Vulnerability Index) or grouping years from SWAT (Surface to well advection time). VALID VALUES: Low Medium High 5 Vulnerability Score VULNERABILITY_SCORE NUMBER(2) Yes Ranges from 2,4,6,8 or10, with 10 being most vulnerable of the 5 values. Technical rules outline how to assign this, typically based on the Time of Travel zone and/or the relative Vulnerability Level. VALID VALUES: 2 4 6 8 10 6 WHPA_SCORE VARCHAR2(2) Yes The WHPA zone (A, B, C, D) associated with this vulnerability score 7 Wellfield VARCHAR2(50) No Local name of water system
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Tags / Keywords
Keywords/tags categorizing the dataset.
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Format (CSV, XLS, TXT, PDF, etc)
File format of the dataset.
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Dataset Size
Dataset size in megabytes.
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1608.0 |
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Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
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Published Date
Published date of the dataset.
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2024-01-23 |
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Time Period Data Span (start date)
Start date of the data in the dataset.
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Time Period Data Span (end date)
End date of time data in the dataset.
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GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
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Access category
Type of access granted for the dataset (open, closed, service, etc).
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public |
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License
License used to access the dataset.
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License not specified |
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Limits on use
Limits on use of data.
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Location
Location of the dataset.
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https://trca-camaps.opendata.arcgis.com/datasets/camaps::trspa-swp-groundwater-vulnerable-scoring-areas |
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Data Service
Data service for accessing a dataset.
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Owner
Owner of the dataset.
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trca_d.macleod |
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Contact Point
Who to contact regarding access?
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Conservation Ontario |
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Contact Point Email
The email to contact regarding access?
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[email protected] |
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Publisher
Publisher of the dataset.
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Conservation Ontario |
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Publisher Email
Email of the publisher.
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Author
Author of the dataset.
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trca_d.macleod |
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Author Email
Email of the author.
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Accessed At
Date the data and metadata was accessed.
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2024-04-11 |
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Identifier
Unique identifier for the dataset.
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f496d0ddd70e41d3ba8f73ea89bdf495 |
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Language
Language(s) of the dataset
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English |
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Link to dataset description
A URL to an external document describing the dataset.
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https://trca-camaps.opendata.arcgis.com/datasets/camaps::trspa-swp-groundwater-vulnerable-scoring-areas |
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Persistent Identifier
Data is identified by a persistent identifier.
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Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
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Contains data about individuals
Does the data hold data about individuals?
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Contains data about identifiable individuals
Does the data hold identifiable data about individual?
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Contains Indigenous Data
Does the data hold data about Indigenous communities?
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Portal Type
Platform type of the source portal.
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Version
Version of the datatset
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None |
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Source
Source of the dataset.
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None |
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Version notes
Version notes about the dataset.
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Is version of another dataset
Link to dataset that it is a version of.
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Other versions
Link to datasets that are versions of it.
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Provenance Text
Provenance Text of the data.
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Conservation Ontario |
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Provenance URL
Provenance URL of the data.
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Temporal resolution
Describes how granular the date/time data in the dataset is.
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GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
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GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
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Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
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Community Permission
Community permission (who gave permission).
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The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
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Number of data rows
If tabular dataset, total number of rows.
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295 |
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Number of data columns
If tabular dataset, total number of unique columns.
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13 |
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Number of data cells
If tabular dataset, total number of cells with data.
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3835 |
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Number of data relations
If RDF dataset, total number of triples.
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Number of entities
If RDF dataset, total number of entities.
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Number of data properties
If RDF dataset, total number of unique properties used by the triples.
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Data quality
Describes the quality of the data in the dataset.
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Metric for data quality
A metric used to measure the quality of the data, such as missing values or invalid formats.
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