Colliers Mills Wildlife Management Area is a 12906.63 acre wildlife management area located within Jackson and Plumsted townships, Ocean County, New Jersey. Success Lake is located within the management area. The area is part of the New Jersey Pinelands National Reserve.
New Jersey Pinelands National Reserve is entirely within Ocean County.
The management area is in Ocean County and is part of New Jersey Pinelands National Reserve; the reserve is bigger therefore and may or may not be entirely in the county. The system may not understand this relationship.