Flooding | Status as of April 20, 2026, 4:00 p.m.

General situation

Here is the key information following the meeting of the Municipal Civil Security Organization of the City of Vaudreuil-Dorion (OMSC), held late this morning.

According to forecasts for the coming days, water levels are expected to remain stable over the next 48 hours. No additional measures are required at this time.

The Service de sécurité incendie continues to monitor the situation closely by conducting patrols in areas considered to be at higher risk.

Closings

• A section of de Breslay Street, parallel to Highway 40, is closed.
• Esther-Blondin Wharf is closed to the public.
• The road leading to Maison-Valois Park is closed.

Water levels and forecasts

According to the latest data from the Centre d'expertise hydrique du Québec, the water level of Lake of the Two Mountains is expected to reach:

• 24.00 m today
• 24.00 m tomorrow
• 23.99 m Wednesday

By way of comparison, levels had reached:

• 24.33 m in 2023
• 24.63 m in 2019
• 24.66 m in 2017

For more details, consult the Centre d’expertise hydrique du Québec Web site. 

Members of the public can also view the forecasts for the coming days using the tool Crues Grand Montréal.

Please note that this tool does not take into account flood defences put in place by the City (dikes, flood barriers, etc.). The data comes from water level gauges located on the main waterways of the metropolitan archipelago and is updated in near real time. Forecasts covering a 72-hour period are also issued every six hours. However, these forecasts are subject to a degree of uncertainty and are provided for information purposes only.

Self-service sand stations

In light of the rising water levels, the City is providing self-service sand stations to help residents protect their property.

Sandbag filling stations are now open. Facilities have been set up on site to make filling the sandbags easier.

Important: residents must bring their own spade.

Station locations

Two sites are currently available:

• 190 Avenue Saint-Charles, on the corner of Rue de l'Hôtel-de-Ville, in the Vieux-Dorion area

• Corner of Rue de Breslay and Chemin des Chenaux

These locations were chosen on the basis of their accessibility and the space available, in order to ensure smooth and safe traffic flow.

Preparing for a flood

To find out about best practices and the steps to take, members of the public are invited to visit the Sécurité civile du Québec portal.

Awareness and communications

The City invites residents to stay attentive to upcoming communications and to follow the situation’s progress on its official platforms.

It is recommended to register for the Citizen Space in order to quickly receive any important updates (calls, emails, or text messages).

Recommended preventive measures
 

As a precaution:

• Check that the submersible pump is working properly and ensure it can run continuously if necessary;
• Ensure that the backflow preventer is in good condition to prevent sewage backflow;
• Clear drains and kerbs around the property to facilitate water drainage;
• Monitor sump pits and basements, particularly during heavy rain;
• Prepare a 72-hour emergency kit.

Should the situation deteriorate:

• Remove valuables and electrical appliances from the basement;
• Store important documents in a secure place;
• See the ‘Emergency Measures’ section for further information. 

For information

The City would like to remind residents that it is monitoring the situation closely and will implement the necessary measures as required.

For further information: call 311 or 450 455-3371, extension 2805 (Monday to Friday, 8.30 am to 4.30 pm).

In an emergency: call 911.

An email address is also available for residents: inondations@ville.vaudreuil-dorion.qc.ca