A link to the Harrisville Volunteer Fire Department, Inc serving the Village of Harrisville and Town of Diana in Lewis County and the Town of Pitcairn in St. Lawrence County. The department covers a portion of the Town of Diana including the resort and residential area of Lake Bonaparte and the hamlet of Pitcairn in St. Lawrence County.
The department shares boundaries with Croghan, Natural Bridge, Edwards and Fine. The Town of Diana also contains a part of and is bordered by Ft. Drum, an active U.S. Army installation, home of the 10th Mountain Division.