The Patuxent River is the largest river in Maryland with its watershed entirely contained within the state. Flowing approximately 115 miles from its headwaters near Mount Airy to the Chesapeake Bay, this diverse waterway offers exceptional fishing opportunities across various environments. The river transitions from freshwater to a tidal estuary as it widens significantly near its mouth, reaching over a mile wide and depths exceeding 120 feet in some areas. With nearly half of the river being tidal, the Patuxent provides anglers with opportunities to target both freshwater and saltwater species, making it one of Maryland's most versatile fishing destinations.