Ottawa RiverRegulationPlanning BoardCommission de planificationde la régularisationde la rivière des Outaouais

Forecast for 2023-04-18

River conditions forecasts posted on 2023-04-18 by Ottawa River Regulating Committee


Water levels and flows on the main stem of the Ottawa River are increasing in all locations in response to the rapid melt of the snowpack in the basin. Between Lake Coulonge and Lake Deschenes/Ottawa, levels are expected to continue increasing today and tomorrow, with levels stabilizing over the next few days at levels that are near the major flood levels. Between Ottawa/Gatineau and the Montreal Region, levels are expected to continue increasing over the next few days and remain below the major flood levels. The major flood level is defined as the level at which one or several streets are beginning to flood, with several houses/buildings or neighbourhoods being affected. Water levels are currently expected to remain well below historical flood levels on the main stem of the Ottawa River.


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