Furnace Bay is a shallow inlet at the top of the Chesapeake Bay in Cecil County, Maryland. The primary access point for paddlers is the soft canoe/kayak launch located within Perryville Community Park on the Perry Point peninsula. This launch provides direct access to the calm waters of Mill Creek and Furnace Bay. The overall character of the paddling here is scenic and protected, with minimal motorboat traffic noted in the area. The bay's waters are clear enough at times to see blue crabs walking on the bottom. The area is ecologically rich, forming part of the Susquehanna Flats, a major feeding ground for wildlife. Paddlers can expect to see abundant birdlife including Bald Eagles, Osprey, Great Blue Herons, and large flocks of migratory waterfowl in the fall; sightings of deer, turtles, and otters are also possible. A common day trip route involves paddling from the Perryville Community Park launch across Mill Creek and Furnace Bay to Carpenter's Point and the adjacent Northeast River. Another recommended exploration includes paddling around Mill Creek, Furnace Bay, Principio Creek, Baker Cove, and around Carpenter Point. Trips can be extended by paddling up Principio Creek at high tide, which allows passage under an old stone railroad bridge. The park itself offers basic facilities as a 168.5-acre area with an unparalleled view of the water from Stump Point, which overlooks the confluence of Mill Creek, Furnace Bay, and the Chesapeake Bay.