KINGSTON – The Cataraqui Region Conservation Authority (CRCA) has extended the Flood Warning today for Lake Ontario and the St. Lawrence River.
Lake Ontario and the St. Lawrence River remain under a Flood Warning due to record high water levels. The International Lake Ontario – St. Lawrence River Board is continuing operations and increasing outflow to minimize flooding and erosion impacts when possible. The current outflow volume at Cornwall (10,200 cubic metres per second) equals the maximum outflow observed since recording began at that location in 1900.
The Board reports that the average water level for Lake Ontario was 75.86 metres (m) as of May 25, 2017. This is 8 cm above the record high of 75.78 m for this time of year set in 1952, and remains above the highest water levels observed since recording began in 1918.
Lake wide average water levels have been fairly stable over the past week; however, levels may rise over the next few days depending on the amount of rain received. Level increases are expected to be much less than seen since the start of April. The Board predicts that water levels will start to gradually decline at some point over the next several weeks.
The water level measured today at Kingston is currently 75.8 m which is just 0.2 m below the Lake Ontario 100-year flood elevation of 76.0 m. The current level of the St. Lawrence River measured at Brockville is 75.4 m. This is just 0.4 m below the 100-year level of 75.8 metres in that area along the River.
For up-to-date Lake Ontario and St. Lawrence River water levels in your area visit the following Fisheries and Oceans Canada links:
(Kingston) – 613-544-9264 for real time water levels
(Brockville) – 613-345-0095 for real time water levels