Status: Flood Outlook Statement
Flood Outlook
Thursday, March 5, 2026 (4:30 PM)
The Raisin Region Conservation Authority (RRCA) is issuing a Watershed Conditions Statement – Flood Outlook for the RRCA jurisdiction. A Flood Outlook is issued to provide early notice of the potential for flooding based on weather forecasts calling for heavy rain.
Weather Forecast: Environment Canada is forecasting sustained above-zero temperatures beginning March 6. Daytime highs may reach up to 15°C in some areas, which is expected to accelerate snowmelt. The warmer conditions will likely be accompanied by rainfall, with totals of up to 20 mm possible by March 8. The extended forecast also indicates a continued warming trend, with the potential for an additional 20 mm of rainfall between March 10 and 13.
Environmental Conditions: Current water levels are at normal for this time of year in the RRCA jurisdiction. The anticipated rainfall and warm temperature beginning this weekend is expected to result in increased water levels and flows in the rivers.
Risks: All rivers and streams across the jurisdiction may experience high water levels, fast flowing water and slippery or unstable banks. Flooding is possible in low lying areas.
In North Glengarry: High risk of water backing up in areas typically susceptible to spring flooding downstream of Mill Pond. The water levels of Loch Garry, Middle Lake, and Mill Pond are being actively managed. Sudden increases in dam outflow may be necessary under the forecast weather conditions.
Residents in areas regularly affected by spring flooding should take precautions to protect their property, such as:
• Securing items that might float away as flows increase.
• Removing items from sheds, garages, basements, or lower floors that could be subject to flooding.
• Ensuring sump pump is clear, in good working condition, and has a backwater valve.
• Ensuring easy access to a portable backup generator and pump.
This statement is in effect until Friday March 13, at 1:00 PM. The RRCA will continue monitoring water levels and weather forecasts as part of the Flood Forecasting and Warning program. Updates will be provided as conditions change.
For more information:
Jason Symington, Resource Specialist
613-938-3611 ext. 239
Media Contact:
Vincent Pilon, Communications Specialist
613-938-3611 ext. 229
About Flood Forecasting and Warning in the RRCA
The Ontario Ministry of Natural Resources (MNR) is responsible for flood related emergencies. Flood forecasting and warning has been delegated to Conservation Authorities. If a local emergency is declared, MNR will work directly with the municipality and in consultation with the Conservation Authority.
The Raisin Region Conservation Authority monitors precipitation and water levels throughout Cornwall, South Glengarry, and large portions of North Glengarry and South Stormont.
About Flood Forecasting Notices
Normal
No flood conditions exist.
Watershed Conditions Statement - Water Safety
High flows, unsafe banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
Watershed Conditions Statement - Flood Outlook
Early notice of the potential for flooding based on weather forecasts calling for heavy rain, snow melt, high wind or other conditions that could lead to high runoff, cause ice jams, lakeshore flooding or erosion.
Flood Watch
Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individual landowners in flood-prone areas should prepare.
Flood Warning
Flooding is imminent or already occurring in specific watercourses or municipalities.
In the event of a flood status of anything other than normal, the RRCA will issue a media release and advise our member municipalities.