Forecast for 2023-04-21

River conditions forecasts posted on 2023-04-21 by Ottawa River Regulating Committee

Water levels and flows on the main stem of the Ottawa River continue to rise slowly in most locations in response to ongoing melt of the snowpack in the central and northern parts of the basin. From Chats Lake down to the Montreal area, levels are slowly approaching major flood thresholds. Lake Coulonge levels have already exceeded the major flood threshold and are stabilizing. Between Chats Lake and the Montreal area, levels are expected to stabilize over the weekend. Rain over the weekend may result in additional level increases in some locations starting Monday, depending on the amount and location of rainfall. Water levels are currently expected to remain well below historical flood levels on the main stem of the Ottawa River in all locations.