The International St. Lawrence River Board has opened the drain on Lake Ontario, but for today the water continues to rise. The good news is, the board and the International Joint Commission believe the lake has, or is about to, hit peak and start going down again.
The Army Corps of Engineers webpage shows that a little after 9:30 this morning, 
the Rochester gauge topped 249 feet, up an inch from Thursday. The lake has been rising by nearly an inch a day for several days and the IJC says it’s now at the highest level ever recorded since they began keeping accurate records in 1918.
The Town of Irondequoit today closed the boat launch at Marine Park and the Irondequoit Bay Outlet because it’s under water.
As shoreline flooding continues in Monroe and the other lakeshore counties, the control board announced that flooding on the St. Lawrence River has gone down with drier weather. It’s been letting more water flow out through the Moses-Saunders Dam since mid-week.
With more water now going out than they estimate is coming in, the lake should start going down. But because it’s so vast and there are so many billion gallons of excess water, it will take weeks to produce a noticeable drop. They say it will take months to get back to something like normal spring levels.
The board will confer again on Monday and see if it can speed up the outflow even more.