Brandywine Creek flows through Chester County, Pennsylvania, and New Castle County, Delaware, covering approximately 325 square miles before joining the Christina River at Wilmington. This tributary system features diverse fishing opportunities across both states, from coldwater trout fisheries in the Pennsylvania headwaters to warmwater species in the lower Delaware sections. The creek includes multiple branches—the East Branch and West Branch in Pennsylvania—that merge before crossing into Delaware. Both tidal and nontidal sections provide varied angling experiences, with the North Market Street Bridge in Wilmington marking where these sections meet. The watershed passes through 48 municipalities across the two states, offering anglers a mix of stocked and wild fish populations in different environments.