23-May-2017 23-May-2017

This statement is an update to South Nation Conservation’s (SNC) Flood Watch: St. Lawrence River issued on May 16, 2017. 

Environment and Climate Change Canada is forecasting 10 to 15 mm of precipitation for this week, which is not expected to have any significant effect on water levels.

According to the International Lake Ontario – St. Lawrence River Board, “Lake Ontario’s water level remains the highest since 1918 and the outflow is now at its highest since 1998.” The Moses-Saunders Dam in Cornwall and Long Sault Dam are being operated to account for the outflow from Lake Ontario.  Lake St. Lawrence water levels are expected to peak today, and will begin to slowly drop tomorrow. 

SNC continues to caution residents along low-lying areas of the St. Lawrence River in the Township of Augusta, Township of Edwardsburgh/Cardinal, and the Township of South Dundas. 

Residents are also advised that wind may cause higher waves, further aggravating water levels which may affect structures closer to the shore.

Residents are advised to stay away from watercourses where flows are high and where banks might be unstable.  Parents are encouraged to explain these dangers to their children.

Staff will continue to monitor the water levels and weather forecasts as part of the Flood Forecasting and Warning Program and will provide updates in the event conditions change.

The public is encouraged to visit and to also report changes in water-related conditions, soil stress fractures (i.e. cracks in soil), abrupt changes in streambanks, or sudden leaning of trees in their local areas. All feedback and photos can be sent to, posted on our Facebook page (/SouthNationConservation), or Tweeted to us (@SouthNationCA).

For more information please contact the Flood Duty Officers: Jason Symington at 613-984-2948 ext. 230 or 613-551-8934; or Michael Jones at 613-984-2948 ext. 310 or 613-551-8952.

This statement is in effect until Monday, May 29, 2017.

Forwarded To: All Flood Forecasting and Warning Directory