"For the first time in centuries, the American shad entered the Musconetcong River during its spring spawning migration upriver this year. The Musky, as it’s known to locals, is a tributary of the Delaware in Northwestern New Jersey. The Hughesville Dam, standing 18 feet tall and 150 feet wide, had blocked its way.
But with the dam demolished last September, the American shad, the largest of the herring family and an angler’s favorite, swam up the Musconetcong for the first time since colonial times.
“It tells quite a story that as soon as you remove a dam — at least on this river — the shad, the next opportunity, are right there,” said New Jersey Division of Fish and Wildlife’s principal biologist Pat Hamilton."