The Ganaraska Region Conservation Authority advises water levels are expected to rise in response to heavy rainfall overnight. The Ganaraska Watersheds received between 30 and 50mm of rainfall this morning, March 31st, 2026, and a further 10 to 15mm is possible by this evening.
Flood Potential: HIGH
Issued: March 31st, 2026 at 9:00 a.m.
Flood Potential:Water levels and flows in local streams have been slightly elevated over the past two days due to warm temperatures melting the remaining snowpack. Ground conditions are saturated and will not absorb any more rainfall leading to higher rates of runoff. With the forecasted rainfall today, water levels and flows will continue to rise into this evening and will likely peak overnight.
High water levels in local creeks could cause flooding of adjacent flood plains and low-lying areas. Residents should ensure that their sump pumps are working and secure personal property along creek banks. Local municipalities are the first to respond to and assist with flood emergencies. Residents requiring assistance should contact their local municipality.
If you experience a flood emergency and are in danger, please call 911.
This Flood Watch applies to the Ganaraska River and local creeks within the Ganaraska region and will be in effect until Wednesday, April 1st, 2026 at 8pm. Conservation Authority staff will continue to monitor conditions and provide updates as necessary.
Note: A Flood Watch is issued as notice that flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individual landowners in flood-prone areas should prepare.
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Should you have any questions or wish to report flooding, please contact the following GRCA staff (listed below) at 905.885.8173.
Mike Smith
Flood Operations Officer
Cory Harris, P.Eng.
Flood Forecasting & Warning Supervisor