Lake Ontario water levels continue to go down

August 27, 2019 08:55 AM

ROCHESTER, N.Y. (WHEC) — Water levels on Lake Ontario continue to go down following its peak of over 249 feet back in June.

We are currently around 247.5 feet, which is around 2 feet above the long-term average for this time of year.  Things have been drier this summer than average, which is helping to keep the inflow lessened. This summer season to date, we are about an inch below average. 

Furthermore, the outflow has been at a record high for a record length of time this summer—69 days to be exact. That's 15 days longer than in 2017 when we had similar flooding. That goes to show how high the floodwaters were this year.

Last Wednesday, the outflow was decreased to help reduce the risk to navigation and erosion downstream along the St. Lawrence.

Although water levels are going down, they are still high. When we get into the autumn months, more cold surges and northerly winds will be likely, keeping the threat of lakeshore flooding a real possibility since water levels should remain above the long-term average through December. 


Robert Speta

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