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, boosting water levels in local rivers. The Grand River Conservation Authority activated the flood warning at 3:30 p.m. on Saturday. Rainfall measured 15 to 30 mm across the watershed from Friday through Saturday afternoon.
The northern snowpack holds substantial water content. Warm conditions paired with intermittent heavy rain drive snowmelt and heightened runoff, according to the warning.
Watershed-Wide Alert
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.
Current Risk Levels and Forecast
Ayr, New Hamburg, and West Montrose currently face a level one flood risk. New Hamburg and Ayr may escalate to level two on Sunday, officials note.
Ice persists on several rivers, including the Grand River, raising the potential for jams. High flows and unstable ice heighten dangers near waterways. Authorities urge extreme caution around rivers and streams.
Wilmot Township notified New Hamburg residents of the warning, recommending close monitoring over the weekend.
Weather Outlook
Environment Canada issued a yellow alert for rain across Waterloo Region, Guelph, and Wellington County much of Saturday. Expect rain and possible thunderstorms Saturday night, with snow and freezing drizzle likely early Sunday morning.
