Flooding

Township of Severn is fortunate to have plenty of lakes, rivers and streams. However, this can become a risk to public safety if flooding occurs.

Visit our News and Notices page for information on active Flood Watches or Warnings. 

What to do during a flood

In the event of flooding, here are some tips you can follow:

• when approaching a flooded area, don't guess the depth of the water
• avoid crossing bridges if the water is high and flowing quickly
• don't drive through floodwater and never cross a flooded area on foot
• find another route if necessary
• if your home or business has flooded, watch for electrical shock hazards and gas leaks or odours (sewage)
• don't enter a flooded area, especially if there is any concern that structural integrity has been compromised

Protect your home from flooding

Heavy rain that falls over short periods of time can overwhelm storm and sewer systems.

You can help to protect your home by following these tips:

• clear eavestroughs, downspouts and catch basins of leaves and other debris that may keep water from draining
• keep your drain system clean and in good repair
• fix leaks in walls, floors, windows or foundations
• check for moisture along the walls and floor, fill and seal any visible cracks
• make sure that no garbage, leaves, ice or other debris blocks storm sewers or culverts on or near your property

Updates on Watershed Conditions Statement

April 10, 2026: Flood Watch for the Severn and Black Rivers around Washago as well as Sparrow Lake and Lake St. John until Friday, April 17, 2026

April 14, 2026: MNR issues Watershed Conditions Statement: Flood Warning for the Severn and Black Rivers around Washago as well as Sparrow Lake and Lake St. John until Wednesday, April 22, 2026

Higher than normal water levels and flow conditions are present throughout the area and residents are reminded to keep a close watch on weather conditions, regularly check for updated messages, and exercise caution near fast-moving rivers and streams.

Description of current conditions

FLOOD WARNING: Flooding is imminent or occurring within specific watercourses and municipalities.

River flows along the Severn River remain at elevated levels. Lake levels on Sparrow Lake continue to rise and will remain high as remaining snowmelt and recent precipitation works its way through the system. The remaining snowpack is expected to enter the watershed with the warm temperatures and forecasted precipitation. Water levels are expected to remain high and fast flowing with potential for flooding to occur.

Severn will post updates as received from the Ontario Ministry of Natural Resources and Trent Severn Waterway / Parks Canada.

Visit the Ministry and Parks Canada websites for water management updates:

• Ministry of Natural Resources and Forestry
• Trent Severn Waterway / Parks Canada