Water Conditions Statement - Flood Issued

Apr 27, 2017 -

Here comes the rain again.

With 10-15 mm expected to begin later today, with a risk of thunderstorms that could result in an additional 10-15 mm, the North Bay-Mattawa Conservation Authority is issuing a Watershed Conditions Statement - Flood Outlook.

"The ground has pretty much thawed, but it is saturated.  If we had more vegetation or leaf out on the trees, they could be absorbing some of the rain.  But right now, with the amount forecast, and the intensity of rainfall that often accompanies thunderstorms, we need to be aware that water levels will be impacted" said Katelyn Lynch, NBMCA Duty Officer. 

And there's more rain to come.  The current five-day forecast is calling for 25 to 50 mm of rain for the watershed Sunday into Monday; however there is some some uncertainty with this forecast. Lake Nipissing is currently at its maximum operating level, 195.95m.  It is anticipated that with the forecast precipitation over the next four days, the lake level could rise to a level of concern.

Water levels and flows across the remainder of the North Bay-Mattawa region remain elevated due to recent participation and the last of the snow melt over the past week. 

Staff at the North Bay-Mattawa Conservation Authority will continue to monitor weather and watershed conditions and update this Flood Outlook based on the changing weather/streamflow conditions and water levels as needed.

Residents, especially those in low lying areas, are encouraged to monitor the conditions as they develop.  Shorelines of creeks and rivers will be very slippery at this time and when combined with cold open water, pose a serious hazard.  Parents are encouraged to keep their children and pets away from watercourses.

Municipalities are encouraged to monitor water crossing to ensure the continual movement of water through culverts and bridges.  A close watch on local conditions and updated forecasts and warning from Environment Canada is also recommended.

NBMCA issues these messages through local media and social media including twitter @theNBMCA and facebook.com/NBMCA.


Katelyn Lynch, Duty Officer, 705-474-5420

Sue Buckle, Supervisor, Communications & Outreach, 705-474-5420 ext. 2010

Learn more about Flood Forecasting Terminology here: