Otonabee Conservation Issues Flood Watch to Peterborough and Surrounding Area

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A flood watch update has been issued by Otonabee Conservation for the Trent-Severn Waterway and local watercourses on Thursday, urging residents to keep close watch for frazil ice.

file photo.

At 12:30 p.m. Thursday, Otonabee Conservation issued a flood watch for the Trent-Severn Waterway (Kawartha Lakes, Otonabee River, Rice Lake and Trent River to Hastings) and other local watercourses, alerting municipalities, residents and businesses that flooding is possible.

As a result of rainfall and snowmelt across the Trent-Severn, Parks Canada is managing high water levels and flows through the entire system. These high flows are expected to continue along the Otonabee River for the next seven to ten days, according to Otonabee Conservation.

The winter storm forecast is expected to generate frazil ice which may lead to flooding. Frazil ice (a kind of slush ice) can form when cold air temperatures and wind chill combine to cause surface water temperature to be super-cooled, but is unable to form a solid cover of ice because of fast moving water.

As frazil ice flows downstream, Otonabee Conservation says it will eventually come to rest against obstructions such as islands, bridge piers and abutments, in low velocity areas (bends, slope reductions) or in areas of channel constrictions, where it will accumulate. Where frazil ice accumulates, it is likely to cause a restriction of water flow downstream, resulting in a rise of water and possible flooding behind the frazil ice build-up.

Residents and businesses along the shores of the Otonabee River and Kawartha Lakes are strongly encouraged by Otonobee Conservation to keep a close watch for frazil ice generation, accumulation and jamming, and to take action to limit or prevent damages due to potential flooding.

This flood watch will expire Jan. 19 unless updated earlier.

Water levels can be monitored online at:

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