Fishing Creek's source is above sea level in Sugarloaf Township, south of State Game Lands Number 13 and Pennsylvania Route 118, where East Branch and West Branch Fishing Creeks of southern Sullivan County meet in northern Columbia County. The creek heads approximately south with a few bends through Sugarloaf Township for about . In the southern part of the township, it turns east for less than a mile and picks up Coles Creekits first named tributary after the confluence of the East and West Branches. It empties into Fishing Creek from the northeast, upstream of its mouth.