TRCA Fisheries Non-Wadable

This dataset includes 2010–2025 fish monitoring data from all lake, non-wadable stream, and wetland sites sampled by Toronto and Region Conservation Authority’s Aquatic Monitoring and Management (AMM) team. For each site and sampling event, the dataset documents the watershed/Lake Ontario, visit date, sampling type, fish species captured, total number of individuals, and total biomass (weight in grams). For access to more detailed information, such as individual fish measurements, please contact the AMM team directly.

This dataset includes 2010–2025 fish monitoring data from all lake, non-wadable stream, and wetland sites. The data is from long-term monitoring and assessment of fish communities, short-term projects, and fish rescue activities conducted in support of infrastructure, restoration, and construction projects. Data were collected through standardized fish monitoring surveys conducted by the AMM team using established field protocols appropriate to site type and habitat conditions. The dataset consolidates fish community information across multiple years.

Missing Measurements: A value of –99 is used to indicate that a measurement is not available.

“Outdated” in Site Name: The site can no longer be sampled due to changing site conditions (e.g. site no longer accessible due to infill). 

While reasonable efforts have been made to ensure data accuracy and completeness, this dataset may contain errors, omissions, inconsistencies, or missing values. Users should review and validate the data as appropriate for their intended use.

Datasets available for download

• TRCA_Fisheries_non_wadableFeature Layer

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• TRCA_Fisheries_non_wadable (Explore)HTML

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• Fish
• Lake Ontario
• Monitoring
• RWMP
• Stream
• TRCA
• aquatic monitoring
• fish community
• fisheries
• non-wadable
• open data
• regional watershed...

Additional Info

• Maturity Level 1 (54%)
• Maturity Level 2 (69%)
• Maturity Level 3 (44%)
• Maturity Level 4 (10%)
• Maturity Level 5 (0%)
• Maturity Level 6 (38%)

Field	Value
Last Updated	September 12, 2026, 07:17 (UTC)
Created	September 12, 2026, 07:17 (UTC)
Domain / Topic Domain or topic of the dataset being cataloged.
Title Title for the Dataset.	TRCA Fisheries Non-Wadable
Description A description of the dataset.	This dataset includes 2010–2025 fish monitoring data from all lake, non-wadable stream, and wetland sites sampled by Toronto and Region Conservation Authority’s Aquatic Monitoring and Management (AMM) team. For each site and sampling event, the dataset documents the watershed/Lake Ontario, visit date, sampling type, fish species captured, total number of individuals, and total biomass (weight in grams). For access to more detailed information, such as individual fish measurements, please contact the AMM team directly. This dataset includes 2010–2025 fish monitoring data from all lake, non-wadable stream, and wetland sites. The data is from long-term monitoring and assessment of fish communities, short-term projects, and fish rescue activities conducted in support of infrastructure, restoration, and construction projects. Data were collected through standardized fish monitoring surveys conducted by the AMM team using established field protocols appropriate to site type and habitat conditions. The dataset consolidates fish community information across multiple years. Missing Measurements: A value of –99 is used to indicate that a measurement is not available. “Outdated” in Site Name: The site can no longer be sampled due to changing site conditions (e.g. site no longer accessible due to infill).  While reasonable efforts have been made to ensure data accuracy and completeness, this dataset may contain errors, omissions, inconsistencies, or missing values. Users should review and validate the data as appropriate for their intended use.
Tags / Keywords Keywords/tags categorizing the dataset.	Fish Lake Ontario Monitoring RWMP Stream TRCA aquatic monitoring fish community fisheries non-wadable open data regional watershed...
Format (CSV, XLS, TXT, PDF, etc) File format of the dataset.
Dataset Size Dataset size in megabytes.	0.09
Metadata Identifier Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date Published date of the dataset.	2026-09-11
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.	Toronto and Region Conservation Authority (TRCA) Open Data Licence v1.0 - Toronto and Region Conservation Authority (TRCA)
Limits on use Limits on use of data.
Location Location of the dataset.	https://trca-camaps.opendata.arcgis.com/datasets/camaps::trca-fisheries-non-wadable
Data Service Data service for accessing a dataset.
Owner Owner of the dataset.	trca.lchong
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.	trca.lchong
Author Email Email of the author.
Accessed At Date the data and metadata was accessed.	2026-09-11

Field	Value
Identifier Unique identifier for the dataset.	5787e13e85db4585bc45fef501756101
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::trca-fisheries-non-wadable
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.	27447
Number of data columns If tabular dataset, total number of unique columns.	17
Number of data cells If tabular dataset, total number of cells with data.	466599
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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