Heavy rain and flooding risk along Grand River watershed

High water levels on the Grand River on March 11, 2026.

Environment Canada is warning of more heavy rain in the forecast that could cause localized flooding.

A special weather statement was issued Wednesday.

The weather agency said an additional 20 to 50 millimetres was expected, with several rounds of showers and thunderstorms over the next two days.

According to the Grand River Conservation Authority, the ground has a limited capacity to absorb more rain, meaning even moderate precipitation could lead to pooling water and flooding.

Drivers are being urged to avoid flooded roads. Residents are also advised to stay clear of low-lying areas where water levels could rise quickly.

Road closure

Wilmot Township said it closed Lisbon Road at Nafziger Road due to flooding on Wednesday afternoon.