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Regional Watershed Monitoring Program Water Temperature Data
Environmental Monitoring
Jan Moryk — 2021-08-03 This is a water temperature dataset collected from 2001 to 2019 throughout TRCA watersheds as part of the Regional Watershed Monitoring Program (RWMP). Water temperature data is recorded in degrees Celcius, once every 15 to 30 minutes through loggers. Data is logged continuously throughout three seasons (spring, summer, fall) although some record year-round. Where possible, temperatures were obtained at the same Regional Watershed Monitoring Program (RWMP) sites where fish and benthic community sampling also occurred. There are 150 RWMP monitoring sites across the TRCA's nine watersheds. Water temperature data is recorded and various locations on a three-year cycle. https://trca.ca/about/open-data-licence/
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Active TRCA Flood Messages
Flood Risk Management
J. Duncan — 2021-05-12 Get any currently active TRCA Flood Messages. Includes both Riverine Flooding and Lake Ontario Shoreline flood messages. For more information see https://trca.ca/conservation/flood-risk-management/understand/ https://trca.ca/about/open-data-licence/
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Regional Watershed Monitoring Program Benthic Macroinvertebrate Data, 2013-2021
Development and Engineering Services
Jessica Fang — 2021-07-27 Dataset provides an overview of the benthic macroinvertebrate communities in lotic systems in TRCA’s jurisdiction for the purposes of biomonitoring and bioassessment. The data contained in the dataset were collected from 2013 - 2021 following The Ontario Benthos Biomonitoring Network (OBBN) standard sampling protocols. The dataset contains the necessary information for the calculations of biological metrics to assess stream health (not included; to be calculated at the discretion of dataset user). "[Site Name] A unique tracking id that identifies a distinct site as distinguished by coordinates [Watershed] Name of the watershed each site is located within [Subwatershed] Name of the subwatershed each site is located within [UTM Zone], [UTM Easting], [UTM Northing] The Universal Transverse Mercator (UTM) of site location to the nearest metre [Latitude], [Longitude] The XY coordinates of site location in decimal degree units [Year], [Collection Date] The calendar year and date on which the sample was collected [Phylum] Consistent Phylum name of the taxa [Class] Consistent Class name of the taxa [Order] Consistent Order name of the taxa [Family] Consistent Family name of the taxa [BMI Taxa] Consistent unique name of the taxa at the level the taxa was identified to [Common Name] Consistent common name of the taxa at the Order or Family level [Total Count] Number of Individuals in each BMI taxa [Habitat Sampled] The micro-habitat unit targeted for sampling. Based on The Ontario Benthos Biomonitoring Network (OBBN) standard sampling protocols, targeted habits include riffles and pools: Riffle areas of fast, turbulent water, often characterized by gravel/cobble substrates, and Pool areas of slow, deeper than average water associated with deposition or the impoundment of water from a flow obstruction. [Subsample Number] The sequence of transect subsamples were collected, ranged from 1-3. This number is used to differentiate the two riffles transect subsamples. [Collection Method] The sampling device with which the sample was collected. [Lab Method] The processing method with which the sample was sorted in the laboratory. " https://trca.ca/about/open-data-licence/
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Flood Vulnerable Cluster Data
Flood Risk Management
Rita Lucero — 2021-04-21 Flood Vulnerable Cluster Study Results Currently defined as Flood Vulnerable Areas (FVAs) in TRCA’s Living City Policies, Flood Vulnerable Clusters (FVCs) are sub-areas within the Regulatory storm flood plain that contain multiple existing structures and/or roads for which a single, comprehensive flood remediation approach may be viable. These FVCs include Special Policy Areas (SPAs), as well as historical flood damage centres. For details about SPAs, please refer to TRCA’s Living City Policies. The FVCs within TRCA’s jurisdiction are illustrated on a map located in TRCA’s 2019 Flood Contingency Plan. Note that a FVC boundary is a general radius that includes a concentration of structures and roads within the flood plain. Thus, the FVCs conceptually illustrate these particular flood risk areas at a broader scale. https://trca.ca/about/open-data-licence/
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Hydrology Calibration and Validation Data
Flood Risk Management
J. Duncan — 2021-11-12 Historic storm event data from TRCA monitoring networks for hydrology modelling calibration and validation activities. All timestamps are in Eastern Standard Time. Rainfall is in millimeters (mm) Water Level is in meters, typically Meters above Sea Level (MASL) https://trca.ca/about/open-data-licence/
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Precipitation
Flood Risk Management
J. Duncan — 2020-09-18 Precipitation gauge data from TRCA real time and manual monitoring networks. Data represents preceding 5 minute total (accumulated) rainfall in mm. Each file contains full period of record of published data. Files are updated annually. https://trca.ca/about/open-data-licence/
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Streamflow
Flood Risk Management
J. Duncan — 2020-09-22 Stream gauge data from TRCA real time and manual monitoring networks. Data represents preceding 15 minute average discharge (flow) in m3/second. Each file contains full period of record of published data. Files are updated annually. https://trca.ca/about/open-data-licence/
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Stream Water Level
Flood Risk Management
J. Duncan — 2020-09-22 Stream gauge data from TRCA real time and manual monitoring networks. Data represents preceding 15 minute average water level (stage). Where possible stage is in masl. Each file contains full period of record of published data. Files are updated annually. https://trca.ca/about/open-data-licence/
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Event Data - Precipitation Observations - August 7th 2018
Flood Risk Management
J. Duncan — 2019-02-21 This dataset is a packaged set of rainfall data amalgamated together for the August 7, 2018 storm event. It includes preliminary data from the TRCA meteorological gauge network. https://trca.ca/about/open-data-licence/
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TRCA GIS Open Data (ArcGIS Online)
Corporate Services
Jason Tam — 2022-06-03 TRCA GIS Open data on ArcGIS online. This link will take you to an external site URL: https://trca-camaps.opendata.arcgis.com/ https://trca.ca/about/open-data-licence/
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Hydrometric Data Approval and Grade Code Reference Tables
Flood Risk Management
Flood Risk Management — 2022-02-04 Hydrometeorological data collected by TRCA undergoes a standard review and correction process to ensure all data is of known quality. Data follows a multi-step correction and approval process. The Reference Tables here provide look up values to Approval Codes and Data Quailty Codes found in TRCA published data. https://trca.ca/about/open-data-licence/
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Regional Watershed Monitoring Program Water Quality Data
Development and Engineering Services
Jason Tam — 2022-06-03 Water Quality Data from monthly grab samples collected across the Toronto and Region Conservation Authority’s (TRCA) jurisdiction. Samples are collected monthly following the Provincial Water Quality Monitoring Network (PWQMN) protocol and are analyzed at various private and partner laboratories. Parameters include nutrients, general chemistry, and selected metals. https://trca.ca/about/open-data-licence/
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Regional Watershed Monitoring Program Fish Community Data
Development and Engineering Services
Development and Engineering Services — 2022-06-05 Fish Community records from sites sampled throughout nine watersheds in Toronto and Region Conservation Authority’s (TRCA) jurisdiction. Data is from TRCA's Regional Watershed Monitoring Program and Fisheries Assessments and other aquatic project monitoring activities. Sampling methods may vary between programs/projects. Data includes species names, number of individuals found and total weights. SAR Data has been removed from the dataset – please contact the TRCA for additional information. https://trca.ca/about/open-data-licence/
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TRCA Climate Change Projections under RCP8.5 and RCP4.5 (1971-2100)
Development and Engineering Services
Jason Tam — 2021-04-19 TRCA Climate Change Projections under RCP8.5 and RCP4.5 (1971-2100) These datasets represent future climate change projections for TRCA. The summary information can be used by various audiences to better understand the climate trends expected to be seen within TRCA by the end of the century. It is also anticipated that the data will be used to inform various adaptation initiatives across the TRCA jurisdiction. "For the RCP8.5 tabs and the TRCA Baseline tab, Column A represents the climate parameters. Columns C-R represent the individual climate models. Column S is the overall ensemble average of all the climate models. Columns T and U represent the 10th and 90th Percentiles respectively. https://trca.ca/about/open-data-licence/
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Real Time Hydrometeorological Data
Flood Risk Management
J. Duncan — 2021-05-12 Obtain real-time and historic TRCA stream and precipitation gauge time series data. Stream gauge data is measured in 15-minute intervals with water levels (stage) presented in meters above sea level (masl) and discharge (flow) presented in cubic meters. https://trca.ca/about/open-data-licence/
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TRCA Waterfront Fish Data 2000 - 2018
Development and Engineering Services
Angela Wallace — 2020-10-14 This dataset contains the species fish caught using boat electrofishing along the TRCA Lake Ontario shoreline from 2000 to 2018. The fish are monitored for a variety of reasons including routine long-term monitoring for the Remedial Action Plan, pre/post construction monitoring, Asian Carp surveillance. Standardized boat electrofishing sampling usually occurs for 1000 seconds (effort) although there are often shorter/longer sampling times depending on the reason for sampling. The first 20 fish of each species are individually measured and weighed before they are put back into the water. The remaining fish for each species are measured together in bulk. The "bulked" fish are listed as individuals with an average length and weight (e.g. 27 Emerald Shiner weighed 36 grams; therefore, there would be 27 individual Emerald Shiners listed that each weighed 1.33 g). https://trca.ca/about/open-data-licence/

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