Grand River Conservation Authority issues Flood Watch

Water pooled in parts of Cambridge as snow and ice began to melt on Feb. 24, 2025. (Ashley Bacon/CTV News)

A Flood Watch is in effect for the entire Grand River Conservation Authority watershed.

The Grand River Conservation Authority (GRCA) said there is an increased risk of flooding due to snowmelt, runoff and ice jam formations.

Ice jams form when ice drifting along the current comes to a stop. When multiple pieces of ice become stuck, it can obstruct the flow of water, causing flooding. On Monday, the GRCA said most of the river system was covered in ice and heavy snowpack, but as the region looks at the potential for warmer weather and rain this week, the ice could break up and start moving.

The mild weather is expected as a low-pressure system moves across the U.S. When the system hits the GRCA area, it could bring rain on Tuesday and Wednesday. Meanwhile, daytime temperatures are expected to hit 3 to 10 degrees Celsius mid-week, melting the remaining snow accumulation along the watershed.

Residents are reminded to be extremely cautious around waterways as the spring thaw begins. Banks near rivers and creeks can become slippery and pose a serious hazard when combined with cold, fast flowing water.