The Minisink or (more recently) Minisink Valley is a loosely defined geographic region of the Upper Delaware River valley in northwestern New Jersey (Sussex and Warren counties), northeastern Pennsylvania (Pike and Northampton counties) and New York (Orange and Sullivan counties). Much of the historical Minisink region has been incorporated into the Delaware Water Gap National Recreation Area after defeat of a controversial dam project proposed to be built by U.S. Army Corps of Engineers on the Delaware River near Tocks Island.