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Home > Discover Central Huron > News Bulletins

ABCA Flood Watch

Posted by S Doherty on January 24, 2020

The following Flood Outlook/Water Safety message was issued today by Ausable Bayfield Conservation Authority.
Number: 2020.S.4.1
Issued at: Friday, January 24, 2020 at 2:00 p.m.
Issued by: Davin Heinbuck, Water Resources Coordinator

Rain and snowmelt contribute to the potential for minor flooding

Watershed residents are reminded to stay away from creeks, rivers, other watercourses.

Temperatures above the freezing mark have ripened the snowpack over the last 24 hours. Snow measurements taken today (Friday, January 24, 2020) show that approximately 20-25 millimetres (mm) of water equivalent remains in the snowpack. Temperatures approaching 5 degrees Celsius today, combined with updated forecasts of up to 25mm of rain through today and tonight, will melt much of the remaining snowpack. With saturated ground conditions, a quick runoff can be expected.

The warm temperatures combined with rainfall could result in high stream flows in area rivers and streams, especially if the higher end of the rainfall forecast materializes or is exceeded. Forecasts for the weekend are for above freezing temperatures to continue, with light showers tomorrow changing to snow for the remainder of the weekend.

Major flooding is not anticipated; however, watercourses could reach or exceed bank-full conditions, with minor flooding of traditional low-lying flood plain areas. Stream flows will peak in the smaller streams overnight tonight, and larger rivers through the day Saturday and into Sunday. As a result, flows are expected to remain high into next week.

There is a slight risk of ice jams with this event, as river flows are expected to rise quickly, potentially breaking and moving thin river ice. The risk of ice jamming is limited primarily to the river mouth areas of Port Franks, Bayfield, and to a lesser extent Grand Bend.

Municipal staff should monitor local drainage problem areas where snow conditions may have covered catch basins. Residents are reminded to stay away from all watercourses. The extremely cold water, combined with slippery and unstable stream banks, has created hazardous conditions near all waterways. All ice should be considered unsafe.

This message will remain in effect until 9:00 a.m. on Monday, January 27, 2020, unless local conditions warrant further updates. The Ausable Bayfield Conservation Authority (ABCA) will continue to monitor watershed conditions and will provide an update if required.

 

Archive

24 Jan

ABCA Flood Watch

Flood Outlook/Water Safety message was issued today by Ausable Bayfield - in effect until 9:00 am Monday, January 27, 2020   Read More

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