⚠️ Where Flooding Is Occurring or Expected

• Flood Warning (flooding is happening or expected very soon):

  • Lake Nipissing shoreline in Callander and North Bay
  • Most of the North Bay–Mattawa watershed, including:
    • Wasi River
    • La Vase River
    • Mattawa River upstream of Hurdman Dam

• Flood Watch (flooding is possible – be prepared):

  • Mattawa River downstream of Hurdman Dam

💧 What’s Happening

• April has seen more than double the normal rainfall, along with rapid snowmelt.
• Water levels in rivers and lakes rose quickly and, while some areas are starting to slowly recede, Lake Nipissing continues to rise.
• Lake levels are expected to reach flood levels in the next few days and may be similar to the 2019 flooding in the coming weeks.
• Lake ice combined with high water increases the risk of shoreline erosion and damage.

🚧 Closures and Operations

• Corbeil Conservation Area and Mattawa Island Conservation Area remain closed due to flooding.
• Eva Wardlaw Conservation Area is also closed while flood control operations are underway.
• The Parks Creek backflood control structure is being actively operated to reduce flood risk in nearby neighbourhoods.

👷 What Residents Should Do

• Residents in low‑lying or flood‑prone areas should closely monitor conditions.
• Be prepared for potential flooding, shoreline damage, and local disruptions.
• Keep children and pets away from rivers, streams, and lake edges — water is cold, fast-moving, and banks are slippery.
• Avoid flooded areas and respect all closures and warnings.
• If you need help during a flood emergency, contact your municipality.
  • If you live in an unorganized area, contact the Ministry of Natural Resources – North Bay District.

🗓 How Long This Notice Is in Effect

This flood message will remain in effect until at least Tuesday, April 28, 2026 at 4:00 p.m., unless updated sooner. Read the entire notice here.

📡 Ongoing Monitoring

The NBMCA will continue to monitor weather and water conditions and will issue updates as needed. Residents are encouraged to stay informed through municipal channels and official alerts.