An approaching low-pressure system is expected to move across the Maitland and Nine Mile River watersheds this evening (Friday, April 13, 2018). This weather system will be slow-moving, bringing with it the potential for a mix of snow, rain and freezing rain over the next three days. Precipitation totals from Friday to Sunday are expected to be in the range of 70-80 millimetres (mm).
The rate of runoff and the extent of flooding will be determined largely by rainfall and temperature patterns over the weekend. Based on the current weather forecast major flooding is not anticipated at this time. Flooding will be limited to traditional low-lying flood plain areas. Water levels in headwater streams (Lucknow, Harriston, Listowel) are expected to peak on Monday. Water levels downstream in the larger rivers (Wingham, Benmiller) are expected to peak on Tuesday.
Residents are reminded to stay away from all watercourses. Extremely cold and fast-moving water, combined with slippery and unstable stream banks, will create hazardous conditions near all waterways.
This message will remain in effect until 1:00 p.m. on Wednesday, April 18, 2018, unless local conditions warrant further updates. Maitland Conservation will continue to monitor watershed conditions and will provide an update if required.
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Steve Jackson, Flood and Erosion Safety Services Coordinator