A flood warning is in effect for New Hamburg, Ayr, and West Montrose due to rising river levels from recent rain and melting snow.
Causes of Rising Water Levels
Saturday brought rain and mild temperatures that accelerated snowmelt, pushing up water levels in local rivers. The Grand River Conservation Authority activated the warning at 3:30 p.m. on Saturday. Rainfall measured between 15 and 30 mm across the watershed from Friday through Saturday afternoon.
The northern snowpack holds substantial water content. Warm conditions paired with ongoing rain, sometimes heavy, drive snowmelt and heightened runoff, according to the authority.
Areas Under Watch and Risk Levels
The broader Grand River watershed—from Dundalk in the north to Lake Erie in the south, encompassing Waterloo region, Guelph, and Wellington County—remains under a flood watch. Air temperatures will stay above freezing through Wednesday.
Ayr, New Hamburg, and West Montrose currently face level one flood risk. New Hamburg and Ayr may escalate to level two on Sunday.
Ice Jams and Safety Concerns
Ice persists on several rivers, including the Grand River, raising the potential for jams. High flows and unstable ice heighten dangers near waterways throughout the watershed.
Officials urge the public to exercise extreme caution around rivers and streams.
Local Alerts and Weather Outlook
Wilmot Township notified New Hamburg residents of the warning, advising close monitoring over the weekend. Waterloo region, Guelph, and Wellington County saw a yellow weather warning for rain much of Saturday from Environment Canada.
Forecasts predict rain and possible thunderstorms Saturday night, with snow and freezing drizzle likely early Sunday morning.
