Flooding | Status as of April 18, 2026

General Situation

The Organisation municipale de sécurité civile of the Ville de Vaudreuil-Dorion (OMSC) met again late this afternoon to review the situation related to rising water levels.

The Service des travaux publics is currently completing the installation of pumps to prevent any backflow in the stormwater system. This work is expected to be completed this evening.

A dike was installed yesterday at the end of Hôtel-de-Ville Street. Based on current water level estimates, no additional installations are required at this time.

The Service de sécurité incendie continues close monitoring by conducting patrols in higher-risk areas. The majority of riverside residents considered most at risk have been contacted. At this time, the situation across the territory of Vaudreuil-Dorion is under control.

Water Levels and Forecasts

According to the latest data from the Centre d’expertise hydrique du Québec (MELCCFP), the water level of Lake of Two Mountains is expected to reach 23.73 m today, 23.77 m tomorrow, and 23.84 m on Sunday. For comparison, levels reached 24.33 m in 2023, 24.63 m in 2019, and 24.66 m in 2017. For more details, consult the website of the Centre d’expertise hydrique du Québec.

Residents can also view projections for the coming days using the Greater Montreal Flood Forecasting tool.

Please note that this tool does not take into account mitigation measures implemented by the City, such as dikes and water-filled barriers. The data presented comes from gauging stations located in the main waterways of the metropolitan archipelago and is updated in near real time. Forecasts covering a 72-hour horizon are also provided and updated every six hours. These forecasts involve a degree of uncertainty and are provided for informational purposes only.

Self-Serve Sandbag Stations

The City will make self-serve sandbagging sites available to residents starting tomorrow. Filling stations will be set up; residents must bring their own shovel.

Once the sites are ready, a notice will be sent via Espace citoyen, and the information will also be available on the City’s website and Facebook page.

Vigilance and Communications

The City invites residents to remain attentive to upcoming communications and to follow the situation on its official platforms. Residents are encouraged to register for Espace citoyen to receive important updates quickly (phone call, email, or text message).

Recommended Preventive Measures

As a preventive measure, residents are encouraged to:

Check that their sump pump is functioning properly and can operate continuously if needed
Ensure the backwater valve is in good condition to prevent sewer backups
Clear drains and window wells around the home to facilitate water drainage
Monitor sump pits and basements, especially during heavy rainfall
Prepare a 72-hour emergency kit in case of unforeseen situations

In the event of worsening conditions, it is recommended to:

Move valuables and electrical appliances out of the basement
Store important documents in a safe place
Consult the “Emergency Measures” section of the City’s website for more information