CCWP Wetlands

Inventory of wetlands to inform land use and municipal planning, and support resource and wildlife management. To depict Evaluated Wetlands that have been...

The Wetland Data is a combination of the MNRF Wetlands (detailed below) and the ELC data (from terrestrial field inventory). It has been further refined using the 2015 imagery as well as consultation from external partners and public.

The Wetland data class was previously known as Wetland Unit and the word "Unit" has been dropped from the name. The Wetland data class provides a spatial representation and attribute information for wetlands in Ontario. Not all wetlands have been identified and mapped. Active maintenance is ongoing throughout the province. The currency and accuracy of the spatial representation is variable and requires on-the-ground verification. Many attribute fields were added in 2012. Values will be added to these fields over time. Refer to the Wetland User Guide for details on using the data. Certain attributes identify which wetlands have been evaluated with the Ontario Wetland Evaluation System (OWES) and of those which ones have been designated as Provincially Significant wetlands (PSW). Previous to 2011 this data class contained only Evaluated Wetland data. In the spring of 2011 through the Wetland Consolidation project business areas were consulted to identify the best available existing MNR wetland data for each MNR district. The resulting data were added to this data class where it did not overlap existing Evaluated Wetland data. Sources for wetland data included Wetland Interim (OBM/NTS), Forest Resource Inventory (FRI), Southern Ontario Land Recourse Inventory System (SOLRIS) and MNR district data. Wetlands are lands that are seasonally or permanently flooded by shallow water as well as lands where the water table is close to the surface; in either case the presence of abundant water causes the formation of hydric (moist) soils and has favoured the dominance of either hydrophytic (water loving) or water tolerant plants. An individual spatial polygon represents a discrete wetland type. Values for wetland types are marsh, fen, swamp, bog, treed peatland, open water or unknown. Evaluated Wetlands are those identified and assessed using the technical criteria in the OWES manuals. An evaluation may be for either an Evaluated Wetland or an Evaluated Wetland Complex. Not all wetlands in Ontario have been evaluated. An Evaluated Wetland consists of one or more adjacent (contiguous) wetland polygons. An Evaluated Wetland Complex is a group of separated wetland polygons that have similar or complementary biological, social and/or hydrological functions, are located in close proximity, and are functionally linked (ecologically or hydrologically). An Evaluated Wetland Complex may contain adjacent wetland polygons but must comprise at least one separated wetland polygon. Wetlands that meet certain criteria through OWES are designated as PSWs. The wetland polygons are managed independently from other hydro data classes and may overlap waterbodies or other hydro data. Due to the changing landscape in the south western portion of the province and the vintage of available source data, MNR Aylmer district chose not to add some of the unevaluated wetland data from other sources to the existing Wetland Unit layer during the Wetland Consolidation Project of 2011. The Far North Hudson Bay Lowlands and surrounding area have been updated as of March 31 2013. Legislated or Legal Authority for Collection: The OWES evaluation information is collected to support the wetlands component of the Provincial Policy Statement. OWES data collection began in the early 1980's and will be on-going. Wetland evaluations are subject to changes as more information becomes available. Not all of the OWES information is stored in this layer. The complete OWES file including supporting material and field notes is kept at the MNR district office. Depending on any sensitivity or security issues associated with this information holding, some of the information may not be available for viewing or distribution.

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Additional Info

Field Value
Last Updated May 19, 2026, 16:32 (UTC)
Created May 19, 2026, 16:32 (UTC)
Domain / Topic
Domain or topic of the dataset being cataloged.
Title
Title for the Dataset.
CCWP Wetlands
Description
A description of the dataset.

Inventory of wetlands to inform land use and municipal planning, and support resource and wildlife management. To depict Evaluated Wetlands that have been...

The Wetland Data is a combination of the MNRF Wetlands (detailed below) and the ELC data (from terrestrial field inventory). It has been further refined using the 2015 imagery as well as consultation from external partners and public.

The Wetland data class was previously known as Wetland Unit and the word "Unit" has been dropped from the name. The Wetland data class provides a spatial representation and attribute information for wetlands in Ontario. Not all wetlands have been identified and mapped. Active maintenance is ongoing throughout the province. The currency and accuracy of the spatial representation is variable and requires on-the-ground verification. Many attribute fields were added in 2012. Values will be added to these fields over time. Refer to the Wetland User Guide for details on using the data. Certain attributes identify which wetlands have been evaluated with the Ontario Wetland Evaluation System (OWES) and of those which ones have been designated as Provincially Significant wetlands (PSW). Previous to 2011 this data class contained only Evaluated Wetland data. In the spring of 2011 through the Wetland Consolidation project business areas were consulted to identify the best available existing MNR wetland data for each MNR district. The resulting data were added to this data class where it did not overlap existing Evaluated Wetland data. Sources for wetland data included Wetland Interim (OBM/NTS), Forest Resource Inventory (FRI), Southern Ontario Land Recourse Inventory System (SOLRIS) and MNR district data. Wetlands are lands that are seasonally or permanently flooded by shallow water as well as lands where the water table is close to the surface; in either case the presence of abundant water causes the formation of hydric (moist) soils and has favoured the dominance of either hydrophytic (water loving) or water tolerant plants. An individual spatial polygon represents a discrete wetland type. Values for wetland types are marsh, fen, swamp, bog, treed peatland, open water or unknown. Evaluated Wetlands are those identified and assessed using the technical criteria in the OWES manuals. An evaluation may be for either an Evaluated Wetland or an Evaluated Wetland Complex. Not all wetlands in Ontario have been evaluated. An Evaluated Wetland consists of one or more adjacent (contiguous) wetland polygons. An Evaluated Wetland Complex is a group of separated wetland polygons that have similar or complementary biological, social and/or hydrological functions, are located in close proximity, and are functionally linked (ecologically or hydrologically). An Evaluated Wetland Complex may contain adjacent wetland polygons but must comprise at least one separated wetland polygon. Wetlands that meet certain criteria through OWES are designated as PSWs. The wetland polygons are managed independently from other hydro data classes and may overlap waterbodies or other hydro data. Due to the changing landscape in the south western portion of the province and the vintage of available source data, MNR Aylmer district chose not to add some of the unevaluated wetland data from other sources to the existing Wetland Unit layer during the Wetland Consolidation Project of 2011. The Far North Hudson Bay Lowlands and surrounding area have been updated as of March 31 2013. Legislated or Legal Authority for Collection: The OWES evaluation information is collected to support the wetlands component of the Provincial Policy Statement. OWES data collection began in the early 1980's and will be on-going. Wetland evaluations are subject to changes as more information becomes available. Not all of the OWES information is stored in this layer. The complete OWES file including supporting material and field notes is kept at the MNR district office. Depending on any sensitivity or security issues associated with this information holding, some of the information may not be available for viewing or distribution.
Tags / Keywords
Keywords/tags categorizing the dataset.
Format (CSV, XLS, TXT, PDF, etc)
File format of the dataset.
Dataset Size
Dataset size in megabytes.
3920.0
Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date
Published date of the dataset.
2021-03-22
Time Period Data Span (start date)
Start date of the data in the dataset.
Time Period Data Span (end date)
End date of time data in the dataset.
GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
Field Value
Access category
Type of access granted for the dataset (open, closed, service, etc).
public
License
License used to access the dataset.
Open Government Licence – Ontario
Limits on use
Limits on use of data.
Location
Location of the dataset.
https://trca-camaps.opendata.arcgis.com/datasets/camaps::ccwp-wetlands-1
Data Service
Data service for accessing a dataset.
Owner
Owner of the dataset.
jason.tam
Contact Point
Who to contact regarding access?
Conservation Ontario
Contact Point Email
The email to contact regarding access?
[email protected]
Publisher
Publisher of the dataset.
Conservation Ontario
Publisher Email
Email of the publisher.
Author
Author of the dataset.
jason.tam
Author Email
Email of the author.
Accessed At
Date the data and metadata was accessed.
2022-03-09
Field Value
Identifier
Unique identifier for the dataset.
e68ad3356158460e8126b781b8b8da87
Language
Language(s) of the dataset
English
Link to dataset description
A URL to an external document describing the dataset.
https://trca-camaps.opendata.arcgis.com/datasets/camaps::ccwp-wetlands-1
Persistent Identifier
Data is identified by a persistent identifier.
Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
Contains data about individuals
Does the data hold data about individuals?
Contains data about identifiable individuals
Does the data hold identifiable data about individual?
Contains Indigenous Data
Does the data hold data about Indigenous communities?
Portal Type
Platform type of the source portal.
Field Value
Version
Version of the datatset
None
Source
Source of the dataset.
None
Version notes
Version notes about the dataset.
Is version of another dataset
Link to dataset that it is a version of.
Other versions
Link to datasets that are versions of it.
Provenance Text
Provenance Text of the data.
Conservation Ontario
Provenance URL
Provenance URL of the data.
Temporal resolution
Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
Field Value
Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission
Community permission (who gave permission).
The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
Field Value
Number of data rows
If tabular dataset, total number of rows.
1213
Number of data columns
If tabular dataset, total number of unique columns.
163
Number of data cells
If tabular dataset, total number of cells with data.
197719
Number of data relations
If RDF dataset, total number of triples.
Number of entities
If RDF dataset, total number of entities.
Number of data properties
If RDF dataset, total number of unique properties used by the triples.
Data quality
Describes the quality of the data in the dataset.
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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