Given current conditions and the weather forecast, the City activated INTERVENTION 2 MODE on April 17, 2026, in accordance with the Ville de Sainte-Anne-de-Bellevue’s emergency plan.
According to Environment Canada’s forecast, another weather system will bring 15 to 25 millimeters of rain to southern Quebec on Sunday, April 19, 2026. These rains could cause a rapid rise in the water level of Lac des Deux-Montagnes.
It is imperative that all residents near Lac Deux-Montagnes remain vigilant and, if necessary, take the necessary measures to protect their homes.
Status update
LAC DES DEUX-MONTAGNES
- The flow of the Ottawa River at the Carillon Dam is rising today and is expected to continue rising over the next few days.
- Water levels, which have been rising since Wednesday, April 15, 2026, are also on the rise and will remain so over the next few days. Water levels are approximately 300 millimeters (12 inches) above the minor flood threshold.
- There is a real and present risk of flooding for residents along the shores of Lac des Deux-Montagnes.
- The installation of “Jersey” concrete barriers is scheduled for today along the shores of Lac des Deux-Montagnes in Godin Park and across from 176 Sainte-Anne Street.
- Sainte-Anne Street, between Saint-Charles and de l’Église streets, remains under 24-hour surveillance for flood risks.
LAC SAINT-LOUIS
- Water levels are stable and currently below the minor flood threshold of approximately 200 mm (8 inches);
- The potential for flooding remains, and residents should remain vigilant;
- The Canal Promenade and the area around Lalonde Street remain under 24-hour surveillance for the risk of overflow.
The teams are ready to respond and have all the necessary resources at their disposal:
- Water levels in Lac des Deux-Montagnes and Lac Saint-Louis are being continuously monitored;
- The Municipal Patrol is on duty 24 hours a day, 7 days a week;
- Following the activation of INTERVENTION 2 mode, equipment (pumps, generators, etc.) is in place and the Public Works Department is ready to respond as soon as necessary;
- An email address is now available: mesuredurgence@sadb.qc.ca. This email address can be used at any time for non-urgent matters;
- Residences and businesses located in areas surrounding Lac Deux-Montagnes may receive up to two pallets of sand free of charge should the situation require it. Affected property owners may request sand by calling 514-457-6666 Monday through Thursday from 8:30 a.m. to 4:30 p.m. and Friday from 8:00 a.m. to noon, or at any time via email at mesuredurgence@sadb.qc.ca. Unless otherwise notified by the City in the event of an emergency, sandbags will be delivered on weekdays from Monday through Friday, inclusive.
If you haven’t already, please sign up for the new emergency alert system.
Please note that the CodeRed alert system is no longer in use.
The Ville de Sainte-Anne-de-Bellevue’s Flood Emergency Hotline is now active. If you notice anything unusual, please contact the City’s “FLOOD EMERGENCY” Hotline at 514-457-6666.
For any other emergency, please dial 9-1-1.
Visit our website to learn what to do in the event of a flood.
The Ville de Sainte-Anne-de-Bellevue, in collaboration with the Centre de la sécurité civile de Montréal, is closely monitoring the situation as it develops.
The next update will be published on Monday, April 20, 2026.
Please note that if the situation warrants it, the next update will be published over the weekend.
Thank you for your cooperation.
