Flood Forecasting and Warning

Status: Flood Outlook Statement

Monday, March 20, 2023 (4:30 PM)

Status: Flood Outlook Statement

Watershed Conditions: Flood Outlook Statement

March 20, 2023 (4:30 PM)

The Raisin Region Conservation Authority (RRCA) is issuing a Flood Outlook Statement for the RRCA jurisdiction.

Beginning mid-day on Wednesday March 22, air temperatures are forecast to climb above zero and may remain above zero continuously for two to three days. On Thursday March 23 temperatures are expected to peak above 5°C and 10-20 mm of rainfall is forecast.

The forecasted combination of rainfall and snowmelt is expected to rapidly increase water levels and flows in local watercourses beginning on Thursday, March 23. Flooding of low-lying areas normally water-covered in spring is possible: Watercourses are currently expected to reach their highest levels of February and March so far this year (however, water levels are not expected to exceed those of early January). The RRCA encourages residents to take extra caution near water bodies and secure items that may float away as water flows increase.

Under the current weather forecast, water levels are expected to peak on March 24-25. Water levels are then expected to begin an overall decline through the following days.

This statement is in effect until Monday, March 27, 2023, at 4:00 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: Halya Petzold, Resource Specialist, 613-938-3611 ext. 244, floodforecasting@rrca.on.ca

Media contact: Vincent Pilon, Public Information Coordinator, 613-938-3611 ext. 229, vincent.pilon@rrca.on.ca

Forwarded to: RRCA Flood Forecasting and Warning Directory

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.

About Flood Forecasting Notices

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.

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