August 9, 2024

The Raisin Region Conservation Authority (RRCA) issued a Flood Watch for the RRCA jurisdiction on August 9, 2024. A Flood Watch is issued when flooding of infrastructure has not yet occurred but is possible under forecast weather conditions. The statement is an update to the Flood Outlook statement issued on August 8, 2024.

Weather Forecast: A low pressure system interacting with the remnants of Tropical Storm Debby continues to give heavy rainfall for eastern Ontario today and is expected to taper off tonight. Environment Canada now forecasts 80 to 120 mm of rainfall with locally higher amounts possible.

Environmental Conditions: Current water levels are now above normal for this time of year and are expected to continue throughout the weekend due to the anticipated rainfall. It is expected to see an increase in water levels and flows similar to those observed during the spring freshet.

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 Monday, August 12, at 9:00 AM. 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.

About Flood Forecasting and Warning in the RRCA

The Ontario Ministry of Natural Resources and Forestry (MNRF) is responsible for flood related emergencies. Flood forecasting and warning has been delegated to Conservation Authorities. If a local emergency is declared, MNRF 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.

For more information: Jason Symington, Resource Specialist, 613-938-3611 ext. 239, jason.symington@rrca.on.ca.

Media contact: Lisa Van De Ligt, Team Lead, Communications & Stewardship, 613-938-3611 ext. 223, lisa.vandeligt @rrca.on.ca

Forwarded to: RRCA Flood Forecasting and Warning Directory