SDG COUNTIES, Ontario - This is an update to the Flood Watch released on March 11, 2026. Warmer temperatures combined with additional rainfall this evening will lead to additional snowmelt and result in increases in water levels and flows.
Environment Canada is forecasting a high of 15°C today (Monday) and up to 30 mm of rain by early Tuesday morning, followed by 3–7 cm of snow. Temperatures will drop below zero early Tuesday morning and are expected to remain below freezing until Thursday morning.
Daytime temperatures later this week are expected to reach single-digit highs above zero, with overnight lows in the single digits below zero. Additional snowfall is expected Thursday night through Friday.
Water levels and flows in local rivers and streams remain elevated, however, they have been steadily declining since peak levels and flows early last week. Ground conditions are saturated, limiting infiltration and increasing runoff to waterways.
Based on current forecasts, the SNC flood forecasting model indicates that water levels are expected to increase briefly over the next two days, resulting in additional flooding in low-lying areas, floodplains, and areas with poor drainage.
Rivers throughout the jurisdiction currently have elevated water levels, fast-flowing water, and slippery or unstable banks, creating hazardous conditions near waterways. Remaining river ice may increase the potential for ice jam formation at bridges, culverts, and other channel constrictions.
The extent of flooding will depend on the amount of rainfall received; however, extensive flooding is not expected. Additional updates will be provided as forecasts improve.
Residents in flood-prone or low-lying areas, historically susceptible to flooding, should take the necessary precautions to protect their property.
Please ensure:
- Sump pump is clear, in good working condition and has a backwater valve on it.
- Easy access to portable backup generator and pump.
- Downspouts are clear and the outlet is at least 3 m from the dwelling.
- Driveway culverts are clear of debris and drain well.
- Securing items that might float away as flows increase.
Residents are advised to continue to exercise extreme caution near rivers and waterbodies due to increasing river flows and slippery conditions. Any ice-covered bodies of water are considered unsafe. Parents are encouraged to explain these dangers to their children.
Duration: This flood watch statement is in effect until March 19th, 2026 at 5 PM or until an update has been issued.
SNC monitors the water levels and weather forecasts as part of the Flood Forecasting and Warning Program. Updates are provided as conditions change.