Watershed Report Cards

To coincide with Earth Day on April 22, 2021, Toronto and Region Conservation Authority (TRCA) launched its new Watershed and Ecosystems Reporting Hub. This platform takes an innovative new approach to reporting on watershed and ecosystem conditions.


In 2018, TRCA, in partnership with Conservation Ontario, released a series of Watershed Report Cards that provided a check-up on the state of Toronto and Region’s watersheds at that time.

These Watershed Report Cards track and report on the surface and groundwater quality, forest conditions and stormwater management in the watersheds within the Toronto region.

Explore the Watershed Report Cards

View Previous Report Cards

What is a Watershed?

A watershed is the area of land that catches rain and snow and drains or seeps into a marsh, stream, river, lake, or groundwater.

Watersheds are the collectors, filters, conveyors, and storage compartments of our fresh water supply.

Why Report on Watershed Health?

Watershed monitoring enables conservation authorities, municipalities, and other partners to understand current watershed conditions and trends.

This monitoring data is critical to developing watershed report cards, which:

  • Help inform local watershed plans and programs
  • Identify watershed issues so that solutions can also be identified
  • Focus natural resource management actions, like habitat restoration, where they are needed most
  • Track progress over time

How Do We Report?

TRCA works within the natural boundaries of nine watersheds, as well as the Toronto Waterfront:

The report cards have been populated using data collected from our monitoring sites, as well as information from outside sources and partnerships.

The watershed report cards use a common set of indicators, methodology, and grading criteria developed by Conservation Ontario and conservation authorities throughout the province to report on watershed health.

What Do We Report On?

The indicators that have been selected by Conservation Ontario represent those that provide valuable insight into the health and condition of the watershed, represent both an aquatic and terrestrial perspective, and are meaningful to the residents across Ontario:

  • Surface Water Quality
  • Forest Conditions
  • Groundwater Quality
  • Stormwater Management

How Can You Help?

  • Share the watershed report card with your neighbours.
  • Use the findings of the report cards as a point of discussion with your local councillor.
  • Help kids understand the importance of our local environment and become champions for their watershed!
  • Live an environmentally sustainable lifestyle.
  • Look for volunteer opportunities and ways to contribute to your community
  • Donate to Toronto and Region Conservation Foundation

How Are Other Conservation Authorities Doing?

 Visit Conservation Ontario’sWatershed Checkup webpage to find out.


Please contact:
Shari Dahmer, Project Manager