Tidal / Nontidal Dividing Lines
The following boundaries are designated as dividing lines for tidal and nontidal waters. These boundary lines identify whether a nontidal fishing license or Chesapeake Bay and Coastal Sport Fishing license is required. If you are fishing upstream of the location listed, nontidal fishing regulations apply. If you are fishing downstream of the location listed, tidal regulations apply.
Anne Arundel and
Prince George’s Counties
- Anacostia River:
- Northeast Branch Bridge at northbound lane of Alternate Route 1 Bladensburg Road.
- Northwest Branch Bridge at southbound lane of Rhode Island Avenue.
- Furnace Branch—Maryland Route 2.
- Patuxent River:
- Mainstem: bridge on Maryland Route 214.
- Lyons Creek: Maryland Route 4.
- Stocketts Run: confluence with the river.
- Rock Run: confluence with the river.
- Ferry Branch: confluence with the river.
- Magothy River—Catherine Avenue.
- Marley Creek—Maryland Route 10.
- Severn River—bridge on Maryland Route 3.
- South River and its tributaries:
- North River: Rutland Road.
- Bacon Ridge Branch: Chesterfield Road.
- Beards Creek: Maryland Route 214.
- Broad Creek: Harry S. Truman Parkway.
- Big Gunpowder Falls—three-fourths of a mile south of Maryland Route 7, the Old Philadelphia Road at the B&O Railroad Bridge.
- Little Gunpowder Falls—three-fourths of a mile south of Maryland Route 7, the Old Philadelphia Road at the B&O Railroad Bridge.
- Stansbury Park Pond—base of dam.
- Stemmers Run—Golden Ring Road Bridge.
Baltimore and Howard Counties
- Patapsco River—B&O viaduct at Relay.
- Battle Creek—bridge about two miles east of Bowens (Sixes Road).
- Fishing Creek—one and one-half miles upstream from the mouth of the creek at Chesapeake Beach.
- Hall’s Creek—bridge on Maryland Route 4.
- Hellen Creek—Mill Branch Road, near Solomons.
- Hunting Creek—bridge on Maryland Route 263 about 100 yards west of Maryland Route 4.
- Island Creek—Ross Road, near Brooms Island.
- Lyon’s Creek—bridge on Maryland Route 4.
- Mills Creek—Maryland Route 760.
- Parkers Creek—Maryland Route 765.
- Plum Point Creek—bridge on Maryland Route 263.
- Quaker Swamp—Maryland Routes 2/4.
- St. Johns Creek—Maryland Route 4.
- St. Leonard’s Creek—Parran Road.
- Chapel Branch—Maryland Route 313 near Piney Grove Church.
- Choptank River—bypass on Maryland Route 313 on the outskirts of Greensboro.
- Fowling Creek—wooden bridge on Stratum Road about one mile below Maryland Route 16.
- Hunting Creek—Maryland Route 331.
- Marshyhope Creek—at its confluence with Faulkner Branch.
- Mill Creek—Maryland Route 16.
- Tuckahoe Creek—abandoned stone railroad bridge upstream of Maryland Route 404.
- Watt’s Creek—bridge on American Legion Road.
- Big Elk Creek—Maryland Route 213.
- Bohemia River—Telegraph Road.
- Happy Valley Branch—confluence with Susquehanna River.
- Little Elk Creek—U.S. Route 40.
- Mill Creek—Old Elk Neck Road.
- North East River—Maryland Route 7.
- Octoraro Creek—bridge on U.S. Route 222.
- Principio Creek—Amtrak crossing below Maryland Route 7.
- Rock Run—confluence with the Susquehanna River.
Charles, Montgomery and Prince George’s Counties
- Henson Run—bridge on Old Broad Creek Road.
- Hoghole Run—Maryland Route 6.
- Mattawoman Creek—bridge on Maryland Route 225.
- Nanjemoy Creek and its tributaries:
- Mainstem: Maryland Route 6.
- Mill Run (Burgess Creek): Maryland Route 6.
- Hill Top Fork: Maryland Route 6.
- Wards Run: Maryland Route 6.
- Oxon Creek (Run)—Maryland Route 210.
- Patuxent River and its tributaries:
- Swanson Creek: Maryland Route 381.
- Mataponi Creek: St. Thomas Church Road.
- Spice Creek: Maryland Route 382, Croom Road.
- Full Mill Branch: Maryland Route 382, Croom Road.
- Black Swamp Creek: Maryland Route 382, Croom Road.
- Piscataway Creek—bridge on Maryland Route 224 (Livingston Road).
- Pomonkey Creek—Fenwick Road.
- Port Tobacco Creek—bridge on Maryland Route 6.
- Potomac River—Little Falls at man-made dam.
- Western Branch—bridge on Maryland Route 4.
- Wicomico River—Allens Fresh, bridge on Maryland Route 234.
- Chicamicomico River—U.S. Route 50
- Transquaking River—dam at Higgins Mill Pond.
- Bynum Run—Old Philadelphia Road Bridge on Maryland Route 7.
- Deer Creek—railroad bridge located at the mouth of Deer Creek.
- Gray’s Run—CSX Railroad crossing upstream of U.S. Route 40.
- James Run—Old Philadelphia Road Bridge on Maryland Route 7.
- Winter’s Run—dam located one half mile south of Maryland Route 7, the Old Philadelphia Road.
Kent and Queen Anne’s Counties
- Chester River—500 yards upstream from the Pennsylvania Railroad Bridge at Millington at the point where the Cypress Branch empties into the Chester River.
- Herring Branch—Maryland Route 299.
- Morgan Creek—Wallis Road.
- Red Lion Branch—at its confluence with the Chester River.
- Sassafras River—Maryland Route 299.
- Unicorn Branch—U.S. Geological Survey weir just east of Maryland Route 313.
- Wye East River—Wye Mills Lake dam.
St. Mary’s County
- Budds Creek—Maryland Route 234.
- Chaptico Run—Chaptico Bridge on Maryland Route 234.
- Dynard Run—Maryland Route 242.
- Eastern Branch—Maryland Route 5.
- Gilbert Swamp Run—Maryland Route 234.
- Great Mills Run—bridge on Maryland Route 5.
- McIntosh Run—Maryland Route 5.
- Park Hall Run—Maryland Route 5.
- St. Clements Creek—Maryland Route 234 bridge at town of Clements.
- Tomakokin Creek—Maryland Route 470.
- Town Run—bridge on Maryland Route 5.
- Conowingo Dam—at U.S. Route 1.