A tug of war happens on an almost daily basis in the Delaware River: Fresh water flows downstream from Trenton, while salt water flows upstream from the Atlantic. "Somewhere in between, the two waters blend in, each side pushing against the other," said Tony Navoy, assistant director of the New Jersey Water Science Center, part of the United States Geological Survey…By 2050, scientists expect water levels to rise another foot; and by 2100, three feet, according to Lisa Auermuller. She is watershed coordinator for the Rutgers University Institute of Marine and Coastal Sciences’ Jacques Cousteau National Estuarine Research Reserve, based in Tuckerton.

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