The county seat of Suffolk County, NY lies at the mouth of a river that flows into which body of water?
Peconic River The Peconic River is a river within Suffolk County on Long Island, New York in the United States. The river is located in the eastern end of Long Island. The Peconic River drains an area between the Harbor Hill and Ronkonkoma terminal moraines, and flows into Flanders Bay which in turn connects to Peconic Bay east of Riverhead.
New Mill Pond New Mill Pond is a lake in Smithtown on the Northeast Branch River in Suffolk County, New York and is used for recreational purposes. Construction was completed in 1825. It has a normal surface area of 109 acre . It is owned by Suffolk County Parks Department.