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    1. Home
    2. Water
    3. Flooding and leaks

    Flooding due to rivers or streams

    Safety information for when rivers or other bodies of water overflow their banks.

    Riverine flooding happens when water from a river or other body of water exceeds its banks, flooding the surrounding area.

    This is a natural process that happens when a stream or river can’t handle a high-water flow, and the excess water flows over into nearby low-lying areas.

    Flood forecasting and warnings

    Ontario Conservation Authorities issue flood messages as part of the Flood Forecasting and Warning Program.

    As part of this program, local Conservation Authority employees consistently monitor weather forecasts and watershed conditions and issue flood messages when conditions warrant an alert.

    How to stay informed and prepared

    Find your Conservation Authority

    Peel Region works with 3 local Conservation Authorities: Conservation Halton (CH), Credit Valley Conservation (CVC) and Toronto and Region Conservation Authority (TRCA).

    Refer to Find My CA to locate your local Conservation Authority and know the flood risks in your area.

    Check if you live in a floodplain

    Use TRCA’s floodplain map viewer to determine if your property is within a river flood-prone area.

    Access active flood messages

    Stay updated on current flood conditions and Conservation Authority flood messages:

    • TRCA flood messages
    • CVC flood messages
    • Conservation Halton flood status

    Sign-up for messages about flooding from the TRCA, CVC and CH

    • Sign up for TRCA flood messages via email.
    • Download CVC’s Alertable app.
    • Subscribe to get Halton Conservation status alerts about rivers and streams, low water, or the Lake Ontario shoreline.
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