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Flood Watch

Flood Potential: High
Ice Jam Potential: Low

Issued to: local municipalities and school boards, local conservation authorities, emergency response agencies, health unit, media, NVCA board and staff

Date: April 15, 2018 (6:45 PM)

The Nottawasaga Valley Conservation Authority advises that the Flood Outlook Statement issued April 12, 2018 is now upgraded to a Flood Watch.

Weather Conditions

Up to 40 mm of rain fell in parts of the watershed late last week, followed by snow and ice pellets on Saturday and Sunday. An additional 25-35 mm rain is forecast for Sunday night into​ Monday. Temperatures will also rise above freezing Sunday evening to a high of 7 degrees on Monday. Environment Canada has issued a Rainfall Warning for the watershed and heavy rainfall is expected at times.


Water levels are currently elevated as a result of Friday’s rainfall and ground conditions are frozen or saturated. A significant amount of rain is forecast on Sunday overnight into Monday. Snow and ice accumulated over the weekend will also begin to melt as temperatures rise above freezing late Sunday evening.

Although there is uncertainty on the timing of runoff with the mix of precipitation forecasted, any resulting additional runoff will likely increase water levels in area streams beginning early Monday morning. Water could overflow banks and cause flooding in some low-lying areas. Widespread flooding is not anticipated at this time.


Municipalities, emergency services and individual landowners in flood-prone areas should be on alert.

Hazardous conditions may exist around all waterbodies, as there is a high risk of life-threatening injury if a person falls into the extremely cold water. The public and especially children are advised to stay away from all waterbodies.

The Nottawasaga Valley Conservation Authority continues to monitor river and stream conditions and will issue additional messages as conditions warrant. This Flood Watch Statement will be in effect until 4:00 p.m., Wednesday, April 18, 2018 or until cancelled.

For additional information, please call 705-424-1479 and select option “1” for the flood information line or check our website at:

Peter Alm
Flood Duty Officer

A Flood Watch is a notice that the potential for flooding in the near future exists in specific watercourses and municipalities. Flood Watches may be issued when stream conditions and weather are expected to produce flooding.