Harrisburg Let's start the tour with Pennsylvania's state "capital" city, Harrisburg. The mighty Susquehanna River flows through Harrisburg, Dauphin County. Many different species of fish are found in the Susquehanna River. Fishing Spot Cast a fishing line at Riverfront Park. This public park runs along the Susquehanna River between the river's shoreline and Front Street, from Vaughn Street South to Paxton Street. The park has a nice view of City Island and Blue Mountain. Feature Fish Channel Catfish, Common Carp, Smallmouth Bass and Walleye are present in this portion of the Susquehanna River. Channel Catfish Common Carp Harrisburg, Dauphin County Techniques Try casting crankbaits and plastic baits that mimic baitfish and crayfish. For live bait, cast a jig with a nightcrawler, and retrieve it with a slow, jigging action. Smallmouth Bass Walleye