Water Quality Data from monthly grab samples collected across the Toronto and Region Conservation Authority’s (TRCA) jurisdiction. Samples are collected monthly following the...

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...

TRCA GIS Open data on ArcGIS online. This link will take you to an external site URL: https://trca-camaps.opendata.arcgis.com/

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...

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...

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...

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...

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...

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...

Historic storm event data from TRCA monitoring networks for hydrology modelling calibration and validation activities. All timestamps are in Eastern Standard Time. Rainfall is...

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...

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...

Get any currently active TRCA Flood Messages. Includes both Riverine Flooding and Lake Ontario Shoreline flood messages. For more information see...

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.

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...

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...