Kings Pond Patuxent River Great Seneca Creek Izaak Walton Pond Pine Lake Lake Needwood Martin Luther King Pond Northwest Branch Patuxent River, Laurel Little Patuxent River Kings Pond Patuxent River (CR) Great Seneca Creek Izaak Walton Pond Lake Needwood Pine Lake Martin Luther King Pond Northwest Branch Patuxent River, Laurel Middle Patuxent River (DH) Elkhorn Lake Centennial Lake Patapsco River, Avalon Avalon Pond (SU) Patapsco River, Daniels Gwynn Oak Pond Stansbury Park Pond Little Patuxent River Patapsco River, Upper Piney Run Middle Patuxent River (DH) Elkhorn Lake Centennial Lake Patapsco River, Avalon Avalon Pond (SU) Patapsco River, Daniels Gwynn Oak Pond Stansbury Park Pond Patapsco River, Upper Piney Run Gwynns Falls Jones Falls Piney Run Reservoir Liberty Reservoir Gwynnbrook Pond Morgan Run (CR) Beaver Run Farm Museum Pond Taneytown Pond Westminster Pond Gwynns Falls Jones Falls Piney Run Reservoir Liberty Reservoir Gwynnbrook Pond Morgan Run (CR) Beaver Run Farm Museum Pond Taneytown Pond Westminster Pond Bennett Cerf Pond Gunpowder Falls, Upper Gunpowder Falls, Lower Little Gunpowder Falls Little Falls Deer Creek Forest Hill Pond Principio Creek Howards Pond Rising Sun Pond (SU) Bennet Cerf Pond Gunpowder Falls, Upper Gunpowder Falls, Lower Little Gunpowder Falls Little Falls Deer Creek Forest Hill Pond Principio Creek Howards Pond Rising Sun Pond (SU) Big Elk Creek Big Elk Creek