FLOOD WARNING: Ottawa River – Arnprior to Hawkesbury – Update #9
Weather Forecast: Rainfall amounts of 20 to 50 mm are possible Thursday morning into Friday as a large low-pressure system moves into the area Thursday, May 9, 2019.
Environmental Conditions: Ottawa River water levels are currently decreasing. Forecasted rainfall could cause levels to increase again but are not expected to exceed initial peeks observed last week. Locations from Point Gatineau down to the Grenville/Hawkesbury area could see water levels stop decreasing depending on precipitation received.
Risks: All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk as snowmelt continues along the upper
Levels are expected to remain high for the next two to three weeks.
Risk is highly dependent on the amount of precipitation that is received.
Updates to all projections will be provided as they become available.
MVCA areas of concern: Water levels in the Constance Bay area are stable and are expected to remain that way over the next 48 hours. The forecasted rainfall on Thursday and Friday could cause levels to increase again.
RVCA areas of concern: Water levels in the Britannia area (Grandview Road, Britannia Village, and the Belltown Community) are stable and are expected to remain that way over the next 48 hours. The forecasted rainfall on Thursday and Friday could cause levels to increase again.
Water levels east of Cumberland Village (Boise Village, Morin Road, Leo Lane) are still decreasing but may level off due to the forecasted rainfall on Thursday and Friday.
SNC areas of concern: Water levels in Clarence-Rockland and Alfred-Plantagenet are still decreasing but may level off due to the forecasted rainfall on Thursday and Friday.
ACTION: Residents in flood-prone areas are encouraged to closely monitor conditions and take necessary actions.
Residents are strongly urged to keep sandbags in place for now.
Residents are advised to stay away from watercourses where flows are high and where banks might be unstable. Parents are encouraged to explain dangers to children.
Duration: This Flood Warning is in effect until Friday, May 10, 2019 at 5:00 PM.
South Nation Conservation (SNC) and its Ottawa partners, the Rideau Valley and Mississippi Valley Conservation Authorities, monitor the water levels and weather forecasts with the Ministry of Natural Resources and Forestry as part of the Flood Forecasting and Warning Program. Updates are provided as conditions change.
Locally issued flood messages across Ontario are available at www.ontario.ca/law-and-safety/flood-forecasting-and-warning-program.
The Ottawa River Regulation Planning Board will be reassessing forecast conditions and providing hydrological condition updates on its website daily at www.ottawariver.ca/forecast.php.
Please visit www.nation.on.ca for more information. To provide feedback with respect to changes in water related conditions please email email@example.com, post on our Facebook (/SouthNationConservation) or Twitter (@SouthNationCA).
For more information regarding the Ottawa River, visit www.ottawariver.ca.
FOR MORE INFORMATION: Omar Kana’n, Water Resources Analyst,
FOR MEDIA INQUIRIES: John Mesman, Team Lead of Communications,
FORWARDED TO: All Flood Forecasting and Warning Directory