Baldwins CreekBaldwins Creek is a tributary of the Stony Brook in Mercer County, New Jersey in the United States.CourseBaldwins Creek starts at, near Baldwin State Park. It flows east, flowing through Baldwin State Park and crossing Route 31 (Pennington Road). It flows through the Baldwin State Wildlife Management Area and joins Stony Brook at.Sister tributariesDuck Pond RunHoney BranchLewis BrookPeters BrookStony Brook BranchWoodsville Brook