Mongaup Pond State Campgrouund is located in north eastern Sullivan County. It is situated on a 120 acre lake, the largest body of water in the Catskill Park outside of the N.Y.C. Reservior system. This map shows both fee-campsites (dark brown) and free campsites (yellow) in the nearby vicinity, along with trails.  You can zoom in for details. More information about this campground: https://www.dec.ny.gov/outdoor/24484.html