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Flood Monitoring

Welcome to TRCA's Flood Forecasting and Warning Centre (FFW). The FFW program consists of daily operations by on-call Flood Duty Officers and also the maintenance of flood control infrastructure (including flood control dams and an extensive gauge network). Please click on the links to see highlights of the many initiatives being undertaken by the TRCA Flood Forecasting and Warning program.

TRCA Flood Monitoring

Real Time Flood Monitoring:The TRCA's flood monitoring gauge network spans the GTA, continually monitoring in-stream water levels at TRCA dams and river stations. Real time stream flow, water level, and precipitation information is available. online at: While designed as a portal for Flood Duty Officers, limited access to the website and data is available to the general public.

Flood Contingency Plan:

Click the link below to download the Flood Contingency Plan

Flood Contingency Plan - 483KAcrobat Icon

History of Flood Control:

Click the link below to download the History of Flood Control

History of Flood Control  - 302KAcrobat Icon

Contacts in an Emergency:9-1-1: if you are in danger call 911 immediately

TRCA Flood Warning Line: (416) 661-6514

For basement flooding or street flooding please contact your local municipality or Region offices:

Toronto Water: (416) 338-8888
City of Brampton: (905) 874-2500
City of Mississauga: (905) 615-3200
Town of Richmond Hill: (905) 884-8013
Town of Markham: (905) 475-4866
Town of Stouffville: (905) 640-1900
City of Pickering: (905) 683-4319
City of Oshawa: (905) 655-3344
York Region: (905) 830-4444
Peel Region: (905) 791-7800
Durham Region (905) 668-7721

Flood Documents:Conservation Ontario Class EA

Coming Soon:

CO Flood Brochure

Documentation of the Severe Thunderstorms and Flooding Event of August 19th, 2005 (TRCA June 2006)

1980 Flood Control Strategy (TRCA)


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