It flows southeast for several tenths of a mile before leaving the water gap and crossing a highway.

After a short distance, it turns southwest for a few tenths of a mile before reaching its confluence with the Lackawanna River.

[1] Wildcat Creek joins the Lackawanna River 18.55 miles (29.85 km) upriver of its mouth.

[1] The watershed of West Branch Tinklepaugh Creek has an area of 1.49 square miles (3.9 km2).

[4] At its mouth the peak annual discharge of Wildcat Creek has a 10 percent chance of reaching 1079 cubic feet per second.

Downstream of US Route 6, the creek contains sediment, stormwater, and runoff from culm piles and parking lots.

This reach is described in the Lackawanna River Watershed Conservation Plan as "a sediment-choked, storm water ditch".

The final mile (two kilometers) of the creek is in an open concrete box culvert surrounded by lawns and houses.

[4] Some ridges in the vicinity of Wildcat Creek contain an irregular covering consisting of glacial till.

Approximately 20 percent of the watershed contained residential development, most of which was located near the Lackawanna River.

[5] Wildcat Creek was entered into the Geographic Names Information System on August 2, 1979.

[7] In the early 20th century, the Hudson Coal Company altered the course of Wildcat Creek to Archbald.

However, in the 1930s, they filed an application to the Water Power and Resources Board to divert back towards Jermyn.

[5] A prestressed box beam or girders bridge carrying Main Street over Wildcat Creek was built in 1991.

The remains of the rail corridor of a spur of the New York, Ontario and Western Railway have the potential to be converted into a rail trail along Wildcat Creek, linking Archbald Pothole State Park to the Lackawanna River Heritage Trail.

Further downstream, there are some successional plants along its banks, but most of its riparian buffer is either bare or made of concrete.