The St. Clair Region Conservation Authority (SCRCA) has issued a water safety bulletin in advance of the possibility of significant rainfall.
SCRCA said heavy rainfall, with embedded torrential downpours, are expected from post-tropical storm Beryl beginning overnight Tuesday, July 9, and ending Thursday, July 11.
"Rainfall totals across the region are predicted to be between 40-80 millimetres with higher amounts locally possible," the statement from Water Resources Technician Nicholas Hagerty read. "There is a threat of torrential downpours with rainfall rates of 20-40 mm per hour. Due to the potential intensity of the storms, water levels are expected to rise rapidly and produce localized runoff. High amounts of rainfall in a short period of time can lead to pooling on roads and flash flooding."
Although water levels are anticipated to be elevated from the rainfall with the potential for minor flooding into natural floodplain areas, parks, and fields, Hagerty said major flooding is not anticipated at this time.
"Individuals are reminded to avoid watercourses and flooded areas due to dangerous conditions, slippery banks and cold, swift moving water. Children and pets should be kept away from the water," he said.
SCRCA said it would continue to monitor watershed conditions and will issue advisories should flood issues arise.
Environment Canada issued a rainfall warning Tuesday afternoon for Sarnia-Lambton, London-Middlesex, Windsor-Essex, Chatham-Kent, Goderich, and Southern Huron County.