Bursting river banks outside of Exeter on Friday morning | Photo by B. Shakyaver
In response to a series of low-pressure systems sweeping through Southern Ontario, Maitland Conservation has issued a caution for municipalities within the Maitland and Nine Mile River watersheds. A similar caution was issued by the Ausable Bayfield Conservation Authority earlier this week, with similar concerns in the south end of the county.
The ongoing rainfall, coupled with mild temperatures, poses a potential threat as it has the capacity to melt a substantial portion of the existing snowpack, which holds between 30 – 40 mm of water equivalent. Such a melt could lead to robust runoff, swiftly raising water levels in rivers and streams across the watershed.
While significant flooding is not anticipated presently, there is a likelihood that watercourses might approach or exceed bankfull conditions, causing minor ponding in customary low-lying areas. The weakening of river ice and the possibility of ice jamming, especially in non-traditional areas, adds an element of unpredictability.
As of now, significant river ice has been observed extending from the mouth of the Maitland River in Goderich upstream through Saltford. Despite no substantial jamming reported, Maitland Conservation will maintain vigilance, acknowledging the potential for localized flooding.
Municipal officials are advised to inspect drainage systems and closely monitor low-lying and flood-prone roads. The public is also reminded of the hazardous conditions around watercourses, characterized by slippery and unstable streambanks, cold-water temperatures, and extremely unstable river ice.
Written by: B. Shakyaver
