Gouldsboro State Park is named for Gouldsboro, which was in turn named for Jay Gould. Gould, a native of New York, acquired an immense fortune during the Industrial Revolution, part of which included ownership of ten percent of all the rail tracks in the United States at the time of his death. One of his railroads passed by what is now the eastern boundary of the park. Gould was also the co-owner of a tannery in nearby Thornhurst. Raw hides were shipped from the western United States and Australia on the railroads owned by Gould to Gouldsboro. The hides were then sent to Thornhurst by way of wagons traversing a plank road. As of 2006, this rail line forms the dividing line between Gouldsboro State Park and Tobyhanna State Park in Monroe County, and is owned by the Lackawanna County Railroad Authority and operated by the Delaware-Lackawanna Railroad Co. Inc. Tourist excursions on this line are operated by Steamtown National Historic Site, and run from Steamtown's yard in Scranton to Tobyhanna. A dam and spillway were built on an existing lake in 1895 by the North Jersey & Pocono Mountain Ice Company. The new dam allowed more ice to be harvested from the lake in winter. In 1956 the Pennsylvania Fish and Boat Commission took over ownership of the dam. The park opened in 1958 and the dam was transferred to the DCNR in 2003. Inspections on the dam in 1979 revealed "the dam’s drain gate was inoperable and its spillway was deteriorating". The lake was partially drained in 1985 and 1995 for repairs to the dam and spillway, and completely drained in January 2005. Repairs included removing debris, installing a culvert, fence and erosion control measures, and replacing the spillway. Repairs were completed and the lake was refilled in January 2008.
Recreation
Gouldsboro Lake
Gouldsboro Lake is a man made lake. It is open to boating, swimming, fishing and ice fishing. Gas powered boats are prohibited on Gouldsboro Lake. Electric powered and non powered boats must have current registration from any state, or a launch permit from the Pennsylvania Fish and Boat Commission. A beach at the lake is open from Memorial Day weekend through Labor Day weekend. The beach does not have lifeguards. Gouldsboro Lake is a warm water fishery. The common game fish are pickerel, yellow perch, bass, walleye, sunfish, muskellunge, and catfish. Gouldsboro Lake is also a popular ice fishing destination, however the thickness of the ice is not monitored by the park staff so visitors are asked to use caution when venturing out onto the ice.
Gouldsboro State Park has five picnic areas with about 300 picnic tables. All five picnic areas are shaded and open year-round. There is one pavilion with an electric hook-up.
Prospect Rock Trail is a "difficult" trail that is a loop that begins and ends in the day use area, passing over some very rugged terrain.
Frank Gantz Trail is a "difficult" trail that connects Gouldsboro State Park with Tobyhanna State Park. The trail is very rocky and therefore very demanding, with an estimated round trip completion time of three hours.
Nearby state parks
The following state parks are within of Gouldsboro State Park:
Archbald Pothole State Park
Beltzville State Park
Big Pocono State Park
Frances Slocum State Park
Jacobsburg Environmental Education Center
Hickory Run State Park
Lackawanna State Park
Lehigh Gorge State Park
Nescopeck State Park
Promised Land State Park
Prompton State Park
Tobyhanna State Park
Varden Conservation Area
Climate
According to the Trewartha climate classification system, Gouldsboro State Park has a Temperate Continental climate with warm summers, cold winters and year-around precipitation. Dcbo climates are characterized by at least one month having an average mean temperature ≤, four to seven months with an average mean temperature ≥, all months with an average mean temperature < and no significant precipitation difference between seasons. Although most summer days are comfortably humid in Gouldsboro State Park, episodes of heat and high humidity can occur with heat index values >. Since 1981, the highest air temperature was on 07/15/1995, and the highest daily average mean dew point was on 08/01/2006. July is the peak month for thunderstorm activity which correlates with the average warmest month of the year. The average wettest month is September which correlates with tropical storm remnants during the peak of the Atlantic hurricane season. Since 1981, the wettest calendar day was on 09/30/2010. During the winter months, the plant hardiness zone is 5a with an average annual extreme minimum air temperature of. Since 1981, the coldest air temperature was on 01/21/1994. Episodes of extreme cold and wind can occur with wind chill values <. The average snowiest month is January which correlates with the average coldest month of the year. Ice storms and large snowstorms depositing ≥ of snow occur nearly every year, particularly during nor’easters from December through March.
Ecology
According to the A. W. Kuchler U.S. potential natural vegetation types, Gouldsboro State Park would have a dominant vegetation type of Northern Hardwood with a dominant vegetation form of Northern hardwood forest. The peak spring bloom typically occurs in early-May and peak fall color usually occurs in early-October. The plant hardiness zone is 5a with an average annual extreme minimum air temperature of.