South Nation Conservation is warning that rainfall amounts of 20 to 50 mm are possible Thursday morning into Friday as a large low-pressure system moves into the area on Thursday, May 9, 2019.
Ottawa River water levels are currently decreasing but heavy 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.
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 Ottawa River.
Levels are expected to remain high for the next two to three weeks.
Water levels in Clarence-Rockland and Alfred-Plantagenet are still decreasing but may level off due to the forecast rainfall on Thursday and Friday.
Water levels east of Cumberland Village (Boise Village, Morin Road, Leo Lane) are still decreasing but may level off due to the forecast rainfall on Thursday and Friday.
Residents in flood-prone areas are encouraged to leave sandbags in place for now and to continue montioring the situation.
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.
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 protected], post on our Facebook (/SouthNationConservation) or Twitter (@SouthNationCA).
For more information regarding the Ottawa River, visit www.ottawariver.ca.
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