SUNY Stony Brook has been monitoring the tides... they have not changed...
sometimes when there is the right winds and right moon phase and low atmospheric pressure, you just get higher than normal tides...
I have lived on the water on Eastern LI since 1954... I know the currents and tides...
The tide issue is just Chuck Schumer making uninformed noise...
"[color:"blue"]Despite the fact that the open breach is creating a cleaner, healthier bay that seems to align with disaster-preparedness goals created by the NYS 2100 commission, despite the fact that post-breach tide-levels in the Great South Bay have not risen, and despite the fact that it will cost taxpayers millions of dollars to fill it in, New York Senator Chuck Schumer is still committed to closing the “Old Inlet” breach, refusing to waver from the perspective he offered in a November Long Island Press article where he stated, “Allowing the breach to remain open puts communities all along the south shore of Long Island immediately at greater risk of flooding.[/color]”

Excerpt from WIRED...
http://www.wired.com/geekmom/2013/01/fire-island-breach-helpful/