The Nottawasaga Valley Conservation Authority (NVCA) advises that rainfall amounts over the past 12 hours have increased the potential for localized flooding in low-lying areas.
It says we can expect 40 mm to 80 mm of rainfall, with possible thunderstorms adding to those amounts.
Hazardous conditions exist around all watercourses with a high risk of life-threatening injury if a person falls into the fast-moving water.
NVCA advises everyone, especially children, to stay away from all bodies of water.
The Lake Simcoe Region Conservation Authority has issued a similar advisory for its waterways.
Rainfall amounts in parts Simcoe County, Muskoka and surrounding regions as of 8 a.m. Thursday
- Barrie 50.8 mm
- Collingwood 116.3 mm
- Meaford 131.6 mm
- Parry Sound 90.4 mm
- Muskoka Airport 70.7 mm
- Newmarket 96 mm
A State of Emergency was been declared in Middlesex County, near London after more than 100 millimetres of rain fell in some areas causing flooding along many roadways. Work crews are assessing the damage.
The Upper Thames River Conservation Authority said while much of the rain had soaked into the ground, generating more runoff as the soil became saturated.
Many ditches, creeks, and streams have reached “bank full conditions” or spilled their banks.
feature image: Barrie 360 Archive