Delaware River

Delaware River

The Delaware River is a major river on the Atlantic coast of the United States.A Dutch expedition led by Henry Hudson in 1609 first mapped the river. The river was christened the South River in the New Netherland colony that followed, in contrast to the North River, as the Hudson River was then...

• Christina River
  Christina River
  The Christina River is a tributary of the Delaware River, approximately 35 miles long, in northern Delaware in the United States, also flowing through small areas of southeastern Pennsylvania and northeastern Maryland. Near its mouth the river flows past downtown Wilmington, Delaware,...
  
  

Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

• Greys Creek
• St. Martin River
• Turville Creek
• Trappe Creek

Chesapeake Bay

Chesapeake Bay

The Chesapeake Bay is the largest estuary in the United States. It lies off the Atlantic Ocean, surrounded by Maryland and Virginia. The Chesapeake Bay's drainage basin covers in the District of Columbia and parts of six states: New York, Pennsylvania, Delaware, Maryland, Virginia, and West...

 Eastern Shore

Eastern Shore of Maryland

The Eastern Shore of Maryland is a territorial part of the U.S. state of Maryland that lies predominately on the east side of the Chesapeake Bay and consists of nine counties. The origin of term Eastern Shore was derived to distinguish a territorial part of the State of Maryland from the Western...

• Pocomoke River
  Pocomoke River
  The Pocomoke River stretches approximately from southern Delaware through southeastern Maryland in the United States. At its mouth, the river is essentially an arm of Chesapeake Bay, whereas the upper river flows through a series of relatively inaccessible wetlands called the Great Cypress Swamp,...
  
  
  • Dividing Creek
    Dividing Creek (Maryland)
    Dividing Creek is a tributary of the Pocomoke River on the Delmarva Peninsula. It rises in Wicomico County, Maryland, and forms the boundary between Somerset and Worcester counties....
    
    
  • Nassawango Creek
    Nassawango Creek
    Nassawango Creek is the largest tributary of the Pocomoke River, located on the Delmarva Peninsula. Older variations on the same name include Nassanongo, Naseongo, Nassiongo, and Nassiungo meaning "[ground] between [the streams]"; early English records have it as Askimenokonson Creek, after a...
    
    
• Little Annemessex River
• Big Annemessex River
  Big Annemessex River
  The Big Annemessex River is a tributary of the Chesapeake Bay on the Delmarva Peninsula. It rises in Kingston, Somerset County, Maryland, and flows roughly southwest about in a meandering pattern, then widens into an estuary and continues about to the bay, near Janes Island State Park...
  
  
• Manokin River
  Manokin River
  Manokin River is a river in Somerset County, Maryland, that flows into Tangier Sound, an arm of the Chesapeake Bay. The Manokin rises east of Princess Anne, Maryland, flows through the town, then widens into a tidal estuary. Tributaries along the river's length are Kings Creek, Back Creek, St....
  
  
• Monie Creek
• Wicomico River
  Wicomico River (Maryland eastern shore)
  The Wicomico River is a tributary of the Chesapeake Bay on the eastern shore of Maryland. It drains an area of low marshlands and farming country in the middle Delmarva Peninsula. The name "Wicomico" derives from the words wicko mekee, meaning "a place where houses are built," apparently...
  
  

• Nanticoke River
  Nanticoke River
  The Nanticoke River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It rises in southern Kent County, Delaware, flows through Sussex County, Delaware, and forms the boundary between Dorchester County, Maryland and Wicomico County, Maryland. The river course proceeds southwest...
  
  
  • Marshyhope Creek
    Marshyhope Creek
    Marshyhope Creek is a tributary of the Nanticoke River on the Delmarva Peninsula. It rises in Kent County, Delaware, and runs through Caroline County, Maryland, and Dorchester County, Maryland....
    
    
• Transquaking River
  • Chicamacomico River
• Blackwater River
  Blackwater River (Maryland)
  The Blackwater River is a saltwater river in Dorchester County, Maryland. It has many twists and bends and flows through Blackwater National Wildlife Refuge...
  
  
  • Little Blackwater River
    Little Blackwater River (Maryland)
    The Little Blackwater River is a tributary of the Blackwater River located in Dorchester County, Maryland.The relatively shallow river is about long and is surrounded by farms. It is located between Maple Dam Road to the east and Egypt Road to the west...
    
    
  • Meekins Creek
• Honga River
• Little Choptank River
  Little Choptank River
  The Little Choptank River is a tidal river in Dorchester County in the U.S. state of Maryland. The river rises at the confluence of Lee Creek and Gary Creek west of Cambridge.-External links:*...
  
  
  • Slaughter Creek
    Slaughter Creek
    Slaughter Creek is a saltwater creek that drains into the Little Choptank River. The creek is wide at its mouth. It separates Taylors Island, Maryland from the mainland....
    
    
  • Parsons Creek
  • Fishing Creek

• Choptank River
  Choptank River
  The Choptank River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. Running for , it rises in Kent County, Delaware, runs through Caroline County, Maryland and forms much of the border between Talbot County, Maryland on the north, and Caroline County and Dorchester County on...
  
  
  • Harris Creek
  • Broad Creek
  • Tred Avon River
    Tred Avon River
    The Tred Avon River is a main tributary of the Choptank River in Talbot County on Maryland's Eastern Shore. The river is long.-Geography:...
    
    
    • Town Creek
      Town Creek (Tred Avon River)
      Town Creek is a tributary of the Tred Avon River in Talbot County on Maryland's Eastern Shore.-Geography:The headwaters are located in Oxford and the creek flows north to the Tred Avon River, which drains to the Choptank River and the Chesapeake Bay...
      
      
  • Warwick River
  • Tuckahoe Creek
    Tuckahoe Creek
    Tuckahoe Creek is a tributary of the Choptank River on Maryland's Eastern Shore. It is sometimes referred to as the Tuckahoe River. Upstream of Hillsboro, it forms the boundary between Caroline County and Queen Anne's County, passing through Tuckahoe State Park and dividing the small towns of...
    
    
• Miles River
  Miles River
  The Miles River is a tidal river in Talbot County, Maryland. It is a tributary of the Eastern Bay and is thus part of the Chesapeake Bay watershed. The town of St. Michaels is located on the Miles River, and the river's name is believed to be derived from the name of the town.Its watershed area...
  
  
• Front River
• Wye River
  Wye River (Maryland)
  The Wye River is a tributary of the Chesapeake Bay, on the Eastern Shore of Maryland. It was named by the Lloyd family, Edward Lloyd , and Edward Lloyd , after the River Wye in Wales. It falls within Queen Anne's County and Talbot County, and joins the Miles River near its mouth to the Eastern Bay...
  
  
  • Wye East River

• Chester River
  Chester River
  The Chester River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and its watershed encompasses , which includes of land. Thus the total watershed area is 20% water. It forms the border between Kent County and Queen Anne's County, Maryland, with its...
  
  
  • Corsica River
    Corsica River
    The Corsica River is a tidal river in Queen Anne's County in the U.S. state of Maryland. The river begins near Centreville and empties into the Chester River.-Variant names:...
    
    
  • Cypress Branch
    Chester River
    The Chester River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and its watershed encompasses , which includes of land. Thus the total watershed area is 20% water. It forms the border between Kent County and Queen Anne's County, Maryland, with its...
    
    
  • Andover Branch
    Chester River
    The Chester River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and its watershed encompasses , which includes of land. Thus the total watershed area is 20% water. It forms the border between Kent County and Queen Anne's County, Maryland, with its...
    
    
    • Sewell Branch
      Chester River
      The Chester River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and its watershed encompasses , which includes of land. Thus the total watershed area is 20% water. It forms the border between Kent County and Queen Anne's County, Maryland, with its...
      
      
• Sassafras River
  Sassafras River
  The Sassafras River is a tributary of the Chesapeake Bay on the Delmarva Peninsula in the United States. It is about long and starts in western New Castle County, Delaware, and along the boundary between Cecil County, Maryland on the north and Kent County, Maryland on the south...
  
  
• Elk River
  Elk River (Maryland)
  The Elk River is a tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and as the most northeastern extension of the Chesapeake Bay estuary, serves as one entrance to the Chesapeake and Delaware Canal. It is located in Cecil County, Maryland, with its headwaters extending...
  
  
  • Bohemia River
    Bohemia River
    The Bohemia River is a tributary of the Elk River on the Delmarva Peninsula. It is located in Cecil County, Maryland, with its headwaters extending into New Castle County, Delaware....
    
    
• North East River
  North East River
  The North East River is the northernmost arm of Chesapeake Bay in Maryland, the United States. Entirely tidal, it extends for from the town of North East, southwest past Charlestown to the main body of Chesapeake Bay between Carpenter Point and Red Point. The river is fed by North East Creek and...
  
  

Susquehanna River

• Susquehanna River
  Susquehanna River
  The Susquehanna River is a river located in the northeastern United States. At long, it is the longest river on the American east coast that drains into the Atlantic Ocean, and with its watershed it is the 16th largest river in the United States, and the longest river in the continental United...
  
  
  • Deer Creek
    Deer Creek (Maryland)
    Deer Creek is a river in Maryland that flows through the scenic areas of Harford County and empties into the Susquehanna River, roughly halfway between the Interstate 95 bridge and Conowingo Dam...
    
    
  • Octoraro Creek
    Octoraro Creek
    Octoraro Creek is a tributary of the Susquehanna River, joining it above the Susquehanna's mouth at Chesapeake Bay. The Octoraro rises as an East and West Branch in Pennsylvania. The East Branch and Octoraro Creek form the southern half of the border between Lancaster and Chester counties until...
    
    
  • Conowingo Creek
    Conowingo Creek
    Conowingo Creek is a tributary of the Susquehanna River in Lancaster County, Pennsylvania and Cecil County, Maryland.The name of the creek comes from the Lenape, meaning "at the rapids"....
    
    
  • Broad Creek
    Broad Creek (Susquehanna River)
    Broad Creek is a tributary of the lower Susquehanna River located in Harford County, Maryland.Broad Creek originates on the west side of Constitution Road, just south of the Pennsylvania state line. It runs generally south-southeast for to the Conowingo Reservoir along the Susquehanna...
    
    

Chesapeake Bay Western Shore

• Romney Creek
• Bush River
  Bush River (Maryland)
  Bush River is a tidal estuary in Harford County, Maryland, located about 15 mi northeast of Baltimore. The estuary extends from the community of Riverside, south for about 9 mi , to the Chesapeake Bay...
  
  
  • Winters Run
    Winters Run
    Winters Run is a river in Harford County, Maryland. The river begins north of the community of Fallston at the confluence of the West and East Branches, and flows southeast about to Atkisson Dam in Edgewood. The dam and reservoir were built by the U.S. Army in 1942 to provide an auxiliary fresh...
    
    
• Gunpowder River
  Gunpowder River
  The Gunpowder River is a tidal inlet on the western side of Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls and Little Gunpowder Falls.-Gunpowder Falls:The Big Gunpowder, long, begins in the extreme southern part of Pennsylvania's...
  
  
  • Saltpeter Creek
    • Dundee Creek
  • Bird River
    Bird River
    The Bird River is a tidal river in eastern Baltimore County in the U.S. state of Maryland. The Bird River empties into the Gunpowder River.-External links:*...
    
    
  • Gunpowder Falls
    Gunpowder River
    The Gunpowder River is a tidal inlet on the western side of Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls and Little Gunpowder Falls.-Gunpowder Falls:The Big Gunpowder, long, begins in the extreme southern part of Pennsylvania's...
    
    
  • Little Gunpowder Falls
    Gunpowder River
    The Gunpowder River is a tidal inlet on the western side of Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls and Little Gunpowder Falls.-Gunpowder Falls:The Big Gunpowder, long, begins in the extreme southern part of Pennsylvania's...
    
    
• Middle River
  Middle River (Maryland)
  Middle River is an estuary in Baltimore County, Maryland, located about 5 miles east of the city of Baltimore. The estuary extends from the community of Middle River, north of the Martin Plaza Shopping Center, to the southeast for about 4 miles , to the Chesapeake Bay...
  
  
  • Seneca Creek
  • Frog Mortar Creek
    Frog Mortar Creek
    Frog Mortar Creek is a tidal creek in Baltimore County, Maryland. The creek empties into the Middle River and surrounds the northeast and southeast sides of Martin State Airport.-External links:*...
    
    
• Back River
  Back River (Maryland)
  Back River is a tidal estuary in Baltimore County, Maryland, located about east of the city of Baltimore. The estuary extends from the community of Rosedale, southeast for about to the Chesapeake Bay...
  
  
  • Bread and Cheese Creek
    Bread and Cheese Creek
    Bread and Cheese Creek is a tributary of the Back River in Baltimore County, Maryland. The creek is long, with headwaters just east of the Baltimore city line. It flows east through Baltimore County before emptying into the Back River, which flows into the Chesapeake Bay...
    
    
  • Herring Run
    Herring Run
    The Herring Run is an tributary of the Back River located in Baltimore, Maryland.-Geography:The watershed has its headwaters in Towson, Maryland, and flows through Baltimore and Baltimore County before discharging into the Back River, which empties into the Chesapeake Bay...
    
    
  • Moores Run

• Patapsco River
  Patapsco River
  The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
  
  
  • Bodkin Creek
    • Main Creek
  • Stony Creek
  • Bear Creek
  • Curtis Creek
    Curtis Creek
    Curtis Creek is a tidal creek located in Baltimore City and Anne Arundel County, Maryland. It is a tributary of Curtis Bay. The creek begins at the confluence of Furnace Creek and Marley Creek and flows north about to Curtis Bay.-External links:**...
    
    
    • Furnace Creek
    • Marley Creek
  • Northwest Branch Patapsco River
    Patapsco River
    The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
    
    
    • Jones Falls
      Jones Falls
      The Jones Falls is a stream in Maryland. It is impounded to create Lake Roland before running through the city of Baltimore and finally emptying into the Baltimore Inner Harbor....
      
      
  • Middle Branch Patapsco River
    Patapsco River
    The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
    
    
    • Gwynns Falls
      Gwynns Falls
      Gwynns Falls is a stream located in Baltimore County and Baltimore City, Maryland. The headwaters are located in Reisterstown in Baltimore County, and the stream flows southeast, entering the city of Baltimore and emptying into the Middle Branch of the Patapsco River. The Patapsco drains into the...
      
      
  • Deep Run
  • North Branch Patapsco River
    Patapsco River
    The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
    
    
  • South Branch Patapsco River
    Patapsco River
    The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
    
    
• Magothy River
  Magothy River
  The Magothy River runs through Anne Arundel County in the U.S. state of Maryland. It is located south of the Patapsco River and north of the Severn River...
  
  
  • Little Magothy River
    Little Magothy River
    The Little Magothy River runs through Anne Arundel County in the U.S. state of Maryland. It is located southeast of the Magothy River, just outside its mouth but considered part of the same watershed, and north of the Severn River....
    
    
• Severn River
  Severn River (Maryland)
  The Severn River runs through Anne Arundel County in the U.S. state of Maryland. It is located south of the Magothy River, and north of the South River.-Geography:...
  
  
• South River
  South River (Maryland)
  The South River is a tributary of the Chesapeake Bay in Anne Arundel County, Maryland in the United States.The South River is located south of the Severn River, east of the Patuxent River, and north of the West River and Rhode River, and drains to the Chesapeake Bay.It has a watershed area of ,...
  
  

• West River
  West River (Maryland)
  The West River is a tidal tributary of Chesapeake Bay in southern Anne Arundel County, Maryland. It is south of the Rhode River, which is one of its tributaries, and north of Herring Bay....
  
  
  • Rhode River
    Rhode River
    The Rhode River is a tidal tributary of the West River in Anne Arundel County, Maryland. It is south of the South River.These are its named tidal creeks and coves starting at the upper end and going clockwise, with a lower-order tributary listed after the "&" symbol: The locations of all of...
    
    
    • Bear Creek
    • Sellman Creek
• Patuxent River
  Patuxent River
  The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between...
  
  
  • Town Creek
    Town Creek (Patuxent River)
    Town Creek is a tributary of the Patuxent River in Saint Mary's County, Maryland.-Geography:The headwaters are located in the community of California, Maryland on the east side of Maryland Route 235. The creek flows north about to the Patuxent River, which drains to the Chesapeake Bay...
    
    
  • Cuckold Creek
  • St. Leonard Creek
  • Indian Creek
  • Swanson Creek
  • Lyons Creek
  • Western Branch Patuxent River
    Patuxent River
    The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between...
    
    
  • Little Patuxent River
    Patuxent River
    The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between...
    
    
    • Middle Patuxent River
      Patuxent River
      The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between...
      
      
  • Hawlings River
    Hawlings River
    Hawlings River is a tributary of the Patuxent River in Montgomery County, Maryland. The watershed covers an area of about . The headwaters of the river originate in the area north of Laytonsville, and the river flows southeast, entering the Patuxent about below the Triadelphia Reservoir. Portions...
    
    

Potomac River

• Potomac River
  Potomac River
  The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...
  
  
  • St. Marys River
    St. Marys River (Maryland)
    The St. Marys River is a river in southern Maryland in the United States. It rises in southern St. Mary's County, and flows to the southeast through Great Mills, widening into a tidal estuary near St. Marys City, approximately wide at its mouth on the Potomac River, near the Chesapeake...
    
    
  • Wicomico River
    Wicomico River (Potomac River)
    The Wicomico River is a tributary of the lower tidal portion of the Potomac River located in the U.S. state of Maryland south of Washington, DC. The river empties into the Potomac at Cobb Island and St. Margaret's Island. The Wicomico's watershed drains of Charles, St. Mary's, and southern Prince...
    
    
    • Budds Creek
  • Popes Creek
  • Port Tobacco River
    Port Tobacco River
    The Port Tobacco River is a tidal tributary of the Potomac River located in Charles County, Maryland in the United States. The river is approximately in length. The river was once the site of the thriving Port Tobacco, the county seat of Charles County from 1658 to 1895.-External links:*...
    
    
  • Nanjemoy Creek
    Nanjemoy Creek
    Nanjemoy Creek is a tidal tributary of the Potomac River in Charles County, Maryland, USA, located between Cedar Point Neck and Tayloe Neck.The Nature Conservancy established its Nanjemoy Creek Preserve in 1978, which protects more than in the watershed...
    
    
  • Chicamuxen Creek
  • Mattawoman Creek
    Mattawoman Creek
    Mattawoman Creek is a coastal-plain tributary to the tidal Potomac River with a mouth at Indian Head, Maryland, downstream of Washington, D.C. It comprises a river flowing through Prince George's and Charles counties and a tidal-freshwater estuary in Charles County...
    
    
  • Pomonkey Creek
    Pomonkey Creek
    Pomonkey Creek is a tidal tributary of the Potomac River, near Bryans Road, Maryland. It is named for one of the Indian tribes living in the area.-External links:*...
    
    
  • Piscataway Creek
    Piscataway Creek
    Piscataway Creek is an tributary of the Potomac River in Prince George's County, Maryland. The creek is a tidal arm of the Potomac for its final , entering the Potomac at Fort Washington Park. Tinkers Creek is a tributary to Piscataway Creek, converging from the north upstream of the mouth of the...
    
    
  • Broad Creek
    • Henson Creek
  • Oxon Creek
    Oxon Creek
    Oxon Creek is a cove on the Potomac River which straddles the border between Washington, D.C. and Prince George's County, Maryland just north of Interstate 495 at Woodrow Wilson Bridge. The tributary stream is Oxon Run. Oxon Creek is in length and empties into the Potomac at Goose Island across...
    
    
  • Anacostia River
    Anacostia River
    The Anacostia River is a river in the Mid Atlantic region of the United States. It flows from Prince George's County in Maryland into Washington, D.C., where it joins with the Washington Channel to empty into the Potomac River at Buzzard Point. It is approximately long...
    
    
    
    • Watts Branch (Anacostia River)
      Watts Branch (Anacostia River)
      Watts Branch is a tributary stream of the Anacostia River in Prince George's County, Maryland, and Washington, D.C. The headwaters of the stream originate in the Capitol Heights area of Prince George's County, and the branch flows roughly...
      
      
    • Northeast Branch Anacostia River
      Northeast Branch Anacostia River
      Northeast Branch Anacostia River is a free-flowing stream in Prince George's County, Maryland. It is a tributary of the Anacostia River, which flows to the Potomac River and the Chesapeake Bay.-Course:...
      
      
      • Paint Branch
        Paint Branch
        Paint Branch is a stream that flows through Montgomery County and Prince George's County, Maryland. It is a tributary of the Northeast Branch, which flows to the Anacostia River, Potomac River and the Chesapeake Bay....
        
        
        • Little Paint Branch
      • Indian Creek (Anacostia River)
    • Northwest Branch Anacostia River
      Northwest Branch Anacostia River
      Northwest Branch Anacostia River is a free-flowing stream in Montgomery County and Prince George's County, Maryland. It is a tributary of the Anacostia River, which flows to the Potomac River and the Chesapeake Bay.-Course:...
      
      
      • Sligo Creek
        Sligo Creek
        Sligo Creek is a free-flowing tributary of the Northwest Branch of the Anacostia River in Maryland. The creek is approximately long, with a drainage area of about .- Geography :The creek rises in the Kemp Mill section of Silver Spring in Montgomery County and...
        
        
  • Rock Creek
    Rock Creek (Potomac River)
    Rock Creek is a free-flowing tributary of the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The creek is long, with a drainage area of about...
    
    
  • Little Falls Branch
    Little Falls Branch (Potomac River)
    Little Falls Branch, a tributary stream of the Potomac River, is located in Montgomery County, Maryland. In the 19th century, the stream was also called Powder Mill Branch. It drains portions of Bethesda, Somerset, Friendship Heights, and the District of Columbia, flows under the Chesapeake and...
    
    
  • Minnehaha Branch
  • Cabin John Creek
    Cabin John Creek (Potomac River)
    Cabin John Creek is a tributary stream of the Potomac River in Montgomery County, Maryland. The watershed covers an area of . The headwaters of the creek originate in the city of Rockville, and the creek flows southward for to the Potomac River....
    
    
  • Rock Run
    Rock Run (Potomac River)
    Rock Run is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream rise in the village of Potomac, and the creek flows southeast for to the Potomac River.-External links:...
    
    
  • Carroll Branch
  • Limekiln Branch
  • Watts Branch (Potomac River)
    Watts Branch (Potomac River)
    Watts Branch is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream originate in the city of Rockville, and the branch flows southwest for , under the C&O Canal near Swain's Lock, to the Potomac River, which drains to the Chesapeake Bay...
    
    
  • Muddy Branch
    Muddy Branch
    Muddy Branch is a tributary stream of the Potomac River in Montgomery County, Maryland, located about northwest of Washington, D.C. The headwaters of the stream originate in Gaithersburg, and the stream flows southwest for , through Muddy Branch Park and Blockhouse Point Conservation Park, under...
    
    
  • Seneca Creek
    Seneca Creek (Potomac River)
    Seneca Creek is a stream in Montgomery County, Maryland, roughly northwest of Washington, D.C. It drains to the Potomac River.-Course:The creek begins with two main tributaries:...
    
    
    • Dry Seneca Creek
    • Little Seneca Creek
      Little Seneca Creek
      Little Seneca Creek is an stream in Montgomery County, Maryland, roughly northwest of Washington, D.C. The creek drains portions of Clarksburg, Germantown, and Boyds. It rises south of Damascus and flows southward about to Little Seneca Lake, a reservoir created by construction of a dam on the...
      
      
    • Great Seneca Creek
  • Horsepen Branch
  • Broad Run
    Broad Run (Maryland)
    Broad Run is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream originates west of the town of Poolesville, and the creek flows southward for to the Potomac River.-References:* MCDEP. Accessed 2010-04-27....
    
    
  • Little Monocacy River
    Little Monocacy River
    The Little Monocacy River is a tributary stream of the Potomac River. Despite its name, the stream does not feed into the Monocacy River. The Little Monocacy is located almost entirely in Montgomery County, Maryland, and enters the Potomac just downstream from where the Monocacy enters the Potomac...
    
    
  • Monocacy River
    Monocacy River
    The Monocacy River is a free-flowing tributary of the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The river is long, with a drainage area of about...
    
    
    
    • Bennett Creek
    • Ballenger Creek
      Ballenger Creek
      Ballenger Creek is a tributary of the Monocacy River in Frederick County, Maryland. The headwaters of the creek are located on the east slope of Catoctin Mountain, about west of the city of Frederick. The stream runs roughly southeast to the Monocacy National Battlefield and the confluence with...
      
      
    • Bush Creek
    • Linganore Creek
      Linganore Creek
      Linganore Creek is a tributary of the Monocacy River in Frederick County, Maryland. The stream is formed from the confluence of the north and south forks of the Linganore , about east-northeast of the city of Frederick. The creek runs roughly southwest to the Monocacy River, which drains to the...
      
      
    • Carroll Creek
      Carroll Creek
      Carroll Creek is an tributary of the Monocacy River in Frederick County, Maryland. The headwaters of the creek are located on the eastern slopes of Catoctin Mountain, southeast of Gambrill State Park. The stream runs roughly east through the city of Frederick to the Monocacy, which drains to the...
      
      
    • Israel Creek
    • Tuscarora Creek
      Tuscarora Creek (Monocacy River)
      Tuscarora Creek is a tributary of the Monocacy River in Frederick County, Maryland, in the United States.The creek rises at the eastern base of Catoctin Mountain, about north-northwest of the city of Frederick, and flows southeast about to its mouth at the Monocacy...
      
      
      • Little Tuscarora Creek
    • Owens Creek
    • Double Pipe Creek
      Double Pipe Creek
      Double Pipe Creek is a major tributary of the Monocacy River in Carroll County and Frederick County in Maryland, located several miles north and west of Westminster...
      
      
      • Big Pipe Creek
      • Little Pipe Creek
        • Sams Creek
    • Toms Creek
      • Middle Creek
        Middle Creek (Toms Creek)
        Middle Creek is a stream in Pennsylvania and Maryland. It is a tributary of Toms Creek, joining it near Emmitsburg, Maryland. Water from Middle Creek flows via Toms Creek, the Monocacy River, and the Potomac River to Chesapeake Bay and eventually the Atlantic Ocean....
        
        
    • Piney Creek
    • Alloway Creek
    • Marsh Creek
      Marsh Creek (Monocacy River)
      Marsh Creek is a tributary of the Monocacy River in south-central Pennsylvania and north-central Maryland in the United States. Marsh Creek and Rock Creek join below Gettysburg and the Gettysburg Battlefield to form the Monocacy River...
      
      
    • Rock Creek
  • Tuscarora Creek
    Tuscarora Creek (Potomac River)
    Tuscarora Creek is a tributary of the Potomac River in Frederick County, Maryland, in the United States.The creek rises east of the community of Jefferson, about southwest of the city of Frederick, and flows south to its mouth at the Potomac.-References:...
    
    
  • Catoctin Creek
    Catoctin Creek (Maryland)
    Catoctin Creek is a tributary of the Potomac River in Frederick County, Maryland, USA. Its source is formed in the Myersville, MD area and flows directly south for the entire length of the stream. Catoctin Creek enters the Potomac River east of Brunswick. The stream flows through Catoctin Creek...
    
    
  • Little Catoctin Creek
  • Antietam Creek
    Antietam Creek
    Antietam Creek is a tributary of the Potomac River located in south central Pennsylvania and western Maryland in the United States, a region known as the Hagerstown Valley...
    
    
  • Conococheague Creek
    Conococheague Creek
    Conococheague Creek, a tributary of the Potomac River, is a free-flowing stream that originates in Pennsylvania and empties into the Potomac River near Williamsport, Maryland. It is in length, with in Pennsylvania and in Maryland...
    
    
  • Little Conococheague Creek
    Little Conococheague Creek
    Little Conococheague Creek is a tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania. The stream rises on Two Top Mountain, west of the Whitetail Ski Resort in Franklin County, Pennsylvania, and proceeds south into Washington County, Maryland. It empties into the...
    
    
  • Licking Creek
    Licking Creek
    Licking Creek is a tributary of the Potomac River in Pennsylvania and Maryland in the United States.Licking Creek is born on the west slope of Tuscarora Mountain, near Cowans Gap State Park, flows through eastern Fulton County and a corner of Franklin County in Pennsylvania, and then enters...
    
    
  • Tonoloway Creek
    Tonoloway Creek
    Tonoloway Creek, also known as Great Tonoloway Creek, is a tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania.Tonoloway Creek empties into the Potomac River at Hancock, Maryland.-Tributaries:...
    
    
  • Sideling Hill Creek
    • Bear Creek
  • Fifteenmile Creek
  • Town Creek
    Town Creek (Potomac River)
    Town Creek is a tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania. The creek is formed from the confluence of Sweet Root Creek and Elk Lick Creek, about south of Buchanan State Forest in Bedford County, Pennsylvania. Town Creek flows south along the base of...
    
    
    • Flintstone Creek
  • North Branch Potomac River
    Potomac River
    The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...
    
    
    
    • Evitts Creek
    • Wills Creek
      Wills Creek (North Branch Potomac River)
      Wills Creek is a tributary of the North Branch Potomac River in Pennsylvania and Maryland in the United States.Wills Creek drops off the Allegheny Mountains of southeastern Somerset County, Pennsylvania, and enters the North Branch Potomac River at Cumberland, Maryland.-History:thumb|220px|Fort...
      
      
    • Georges Creek
      Georges Creek
      Georges Creek is a tributary stream of the North Branch Potomac River in western Maryland. The creek has its headwaters near Frostburg and empties into the North Branch Potomac River at Westernport, all in western Allegany County. Along the Georges Creek Valley, there exists a series of small...
      
      
      • Laurel Run
        Laurel Run (Georges Creek)
        Laurel Run is a tributary stream of Georges Creek in Allegany County, Maryland. The creek rises about northwest of Lonaconing and empties into Georges Creek north of Barton.-References:...
        
        
    • Savage River
      Savage River (Maryland)
      The Savage River is a river in Garrett County, Maryland, and is the first major tributary of the North Branch Potomac River from its source. The river was named for 18th century surveyor John Savage....
      
      

Mississippi River

Mississippi River

The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

• Mississippi River
  • Ohio River
    • Monongahela River (PA)
      • Youghiogheny River
        Youghiogheny River
        The Youghiogheny River , or the Yough for short, is a tributary of the Monongahela River in the U.S. states of West Virginia, Maryland, and Pennsylvania...
        
        
        • Casselman River
          Casselman River
          The Casselman River is a tributary of the Youghiogheny River in western Maryland and Pennsylvania in the United States.The Casselman River rises atop the plateau of western Maryland and then follows a great arc across the Laurel Highlands of Somerset County, Pennsylvania to the appropriately named...
          
          
        • Bear Creek
        • Little Youghiogheny River

Alphabetically

• Alloway Creek
• Anacostia River
  Anacostia River
  The Anacostia River is a river in the Mid Atlantic region of the United States. It flows from Prince George's County in Maryland into Washington, D.C., where it joins with the Washington Channel to empty into the Potomac River at Buzzard Point. It is approximately long...
  
  
• Antietam Creek
  Antietam Creek
  Antietam Creek is a tributary of the Potomac River located in south central Pennsylvania and western Maryland in the United States, a region known as the Hagerstown Valley...
  
  
• Back River
  Back River (Maryland)
  Back River is a tidal estuary in Baltimore County, Maryland, located about east of the city of Baltimore. The estuary extends from the community of Rosedale, southeast for about to the Chesapeake Bay...
  
  
• Ballenger Creek
  Ballenger Creek
  Ballenger Creek is a tributary of the Monocacy River in Frederick County, Maryland. The headwaters of the creek are located on the east slope of Catoctin Mountain, about west of the city of Frederick. The stream runs roughly southeast to the Monocacy National Battlefield and the confluence with...
  
  
• Bear Creek (Rhode River)
• Bear Creek (Sideling Hill Creek)
• Bear Creek (Youghiogheny River)
• Bennett Creek
• Big Annemessex River
  Big Annemessex River
  The Big Annemessex River is a tributary of the Chesapeake Bay on the Delmarva Peninsula. It rises in Kingston, Somerset County, Maryland, and flows roughly southwest about in a meandering pattern, then widens into an estuary and continues about to the bay, near Janes Island State Park...
  
  
• Big Pipe Creek
• Bird River
  Bird River
  The Bird River is a tidal river in eastern Baltimore County in the U.S. state of Maryland. The Bird River empties into the Gunpowder River.-External links:*...
  
  
• Blackwater River
  Blackwater River (Maryland)
  The Blackwater River is a saltwater river in Dorchester County, Maryland. It has many twists and bends and flows through Blackwater National Wildlife Refuge...
  
  
• Bodkin Creek
• Bread and Cheese Creek
  Bread and Cheese Creek
  Bread and Cheese Creek is a tributary of the Back River in Baltimore County, Maryland. The creek is long, with headwaters just east of the Baltimore city line. It flows east through Baltimore County before emptying into the Back River, which flows into the Chesapeake Bay...
  
  
• Broad Creek
• Broad Run
  Broad Run (Maryland)
  Broad Run is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream originates west of the town of Poolesville, and the creek flows southward for to the Potomac River.-References:* MCDEP. Accessed 2010-04-27....
  
  
• Budds Creek
• Bush Creek
• Bush River
  Bush River (Maryland)
  Bush River is a tidal estuary in Harford County, Maryland, located about 15 mi northeast of Baltimore. The estuary extends from the community of Riverside, south for about 9 mi , to the Chesapeake Bay...
  
  
• Casselman River
  Casselman River
  The Casselman River is a tributary of the Youghiogheny River in western Maryland and Pennsylvania in the United States.The Casselman River rises atop the plateau of western Maryland and then follows a great arc across the Laurel Highlands of Somerset County, Pennsylvania to the appropriately named...
  
  
• Cabin John Creek
  Cabin John Creek (Potomac River)
  Cabin John Creek is a tributary stream of the Potomac River in Montgomery County, Maryland. The watershed covers an area of . The headwaters of the creek originate in the city of Rockville, and the creek flows southward for to the Potomac River....
  
  
• Carroll Branch
• Catoctin Creek
  Catoctin Creek (Maryland)
  Catoctin Creek is a tributary of the Potomac River in Frederick County, Maryland, USA. Its source is formed in the Myersville, MD area and flows directly south for the entire length of the stream. Catoctin Creek enters the Potomac River east of Brunswick. The stream flows through Catoctin Creek...
  
  
• Chester River
  Chester River
  The Chester River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and its watershed encompasses , which includes of land. Thus the total watershed area is 20% water. It forms the border between Kent County and Queen Anne's County, Maryland, with its...
  
  
• Chicamuxen Creek
• Choptank River
  Choptank River
  The Choptank River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. Running for , it rises in Kent County, Delaware, runs through Caroline County, Maryland and forms much of the border between Talbot County, Maryland on the north, and Caroline County and Dorchester County on...
  
  
• Christina River
  Christina River
  The Christina River is a tributary of the Delaware River, approximately 35 miles long, in northern Delaware in the United States, also flowing through small areas of southeastern Pennsylvania and northeastern Maryland. Near its mouth the river flows past downtown Wilmington, Delaware,...
  
  
• Conococheague Creek
  Conococheague Creek
  Conococheague Creek, a tributary of the Potomac River, is a free-flowing stream that originates in Pennsylvania and empties into the Potomac River near Williamsport, Maryland. It is in length, with in Pennsylvania and in Maryland...
  
  
• Cuckold Creek
• Curtis Creek
  Curtis Creek
  Curtis Creek is a tidal creek located in Baltimore City and Anne Arundel County, Maryland. It is a tributary of Curtis Bay. The creek begins at the confluence of Furnace Creek and Marley Creek and flows north about to Curtis Bay.-External links:**...
  
  
• Deer Creek
  Deer Creek
  - Populated places :* Deer Creek, Illinois* Deer Creek, Indiana* Deer Creek, Minnesota* Deer Creek, Oklahoma* Deer Creek, Taylor County, Wisconsin* Deer Creek, Outagamie County, Wisconsin- Schools :...
  
  
• Deep Run
• Dividing Creek
  Dividing Creek
  Dividing Creek is a tributary of Delaware Bay in southern New Jersey in the United States.-References:*Gertler, Edward. Garden State , Seneca Press, 2002. ISBN 0-9605908-8-9...
  
  
• Double Pipe Creek
  Double Pipe Creek
  Double Pipe Creek is a major tributary of the Monocacy River in Carroll County and Frederick County in Maryland, located several miles north and west of Westminster...
  
  
• Dry Seneca Creek
• Dueling Creek
  Dueling Creek
  Dueling Creek is a tributary of the Anacostia River in southern Maryland in the United States.Dueling Creek is located in what is now Colmar Manor, Maryland....
  
  
• Dundee Creek
• Elk River
  Elk River (Maryland)
  The Elk River is a tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about long, and as the most northeastern extension of the Chesapeake Bay estuary, serves as one entrance to the Chesapeake and Delaware Canal. It is located in Cecil County, Maryland, with its headwaters extending...
  
  
• Evitts Creek
• Fifteenmile Creek
• Flintstone Creek
• Frog Mortar Creek
  Frog Mortar Creek
  Frog Mortar Creek is a tidal creek in Baltimore County, Maryland. The creek empties into the Middle River and surrounds the northeast and southeast sides of Martin State Airport.-External links:*...
  
  
• Furnace Creek
• Georges Creek
  Georges Creek
  Georges Creek is a tributary stream of the North Branch Potomac River in western Maryland. The creek has its headwaters near Frostburg and empties into the North Branch Potomac River at Westernport, all in western Allegany County. Along the Georges Creek Valley, there exists a series of small...
  
  
• Great Seneca Creek
• Gunpowder Falls
• Gunpowder River
  Gunpowder River
  The Gunpowder River is a tidal inlet on the western side of Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls and Little Gunpowder Falls.-Gunpowder Falls:The Big Gunpowder, long, begins in the extreme southern part of Pennsylvania's...
  
  
• Gwynns Falls
  Gwynns Falls
  Gwynns Falls is a stream located in Baltimore County and Baltimore City, Maryland. The headwaters are located in Reisterstown in Baltimore County, and the stream flows southeast, entering the city of Baltimore and emptying into the Middle Branch of the Patapsco River. The Patapsco drains into the...
  
  
• Hawlings River
  Hawlings River
  Hawlings River is a tributary of the Patuxent River in Montgomery County, Maryland. The watershed covers an area of about . The headwaters of the river originate in the area north of Laytonsville, and the river flows southeast, entering the Patuxent about below the Triadelphia Reservoir. Portions...
  
  
• Harris Creek
• Henson Creek
• Herring Run
  Herring Run
  The Herring Run is an tributary of the Back River located in Baltimore, Maryland.-Geography:The watershed has its headwaters in Towson, Maryland, and flows through Baltimore and Baltimore County before discharging into the Back River, which empties into the Chesapeake Bay...
  
  
• Horsepen Branch
• Indian Creek (Anacostia River)
• Indian Creek (Patuxent River)
• Israel Creek
• Jones Falls
  Jones Falls
  The Jones Falls is a stream in Maryland. It is impounded to create Lake Roland before running through the city of Baltimore and finally emptying into the Baltimore Inner Harbor....
  
  
• Laurel Run
  Laurel Run (Georges Creek)
  Laurel Run is a tributary stream of Georges Creek in Allegany County, Maryland. The creek rises about northwest of Lonaconing and empties into Georges Creek north of Barton.-References:...
  
  
• Licking Creek
  Licking Creek
  Licking Creek is a tributary of the Potomac River in Pennsylvania and Maryland in the United States.Licking Creek is born on the west slope of Tuscarora Mountain, near Cowans Gap State Park, flows through eastern Fulton County and a corner of Franklin County in Pennsylvania, and then enters...
  
  
• Limekiln Branch
• Linganore Creek
  Linganore Creek
  Linganore Creek is a tributary of the Monocacy River in Frederick County, Maryland. The stream is formed from the confluence of the north and south forks of the Linganore , about east-northeast of the city of Frederick. The creek runs roughly southwest to the Monocacy River, which drains to the...
  
  
• Little Catoctin Creek
• Little Choptank River
  Little Choptank River
  The Little Choptank River is a tidal river in Dorchester County in the U.S. state of Maryland. The river rises at the confluence of Lee Creek and Gary Creek west of Cambridge.-External links:*...
  
  
• Little Conococheague Creek
  Little Conococheague Creek
  Little Conococheague Creek is a tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania. The stream rises on Two Top Mountain, west of the Whitetail Ski Resort in Franklin County, Pennsylvania, and proceeds south into Washington County, Maryland. It empties into the...
  
  
• Little Falls Branch
  Little Falls Branch (Potomac River)
  Little Falls Branch, a tributary stream of the Potomac River, is located in Montgomery County, Maryland. In the 19th century, the stream was also called Powder Mill Branch. It drains portions of Bethesda, Somerset, Friendship Heights, and the District of Columbia, flows under the Chesapeake and...
  
  
• Little Gunpowder Falls
• Little Monocacy River
  Little Monocacy River
  The Little Monocacy River is a tributary stream of the Potomac River. Despite its name, the stream does not feed into the Monocacy River. The Little Monocacy is located almost entirely in Montgomery County, Maryland, and enters the Potomac just downstream from where the Monocacy enters the Potomac...
  
  
• Little Paint Branch
• Little Patuxent River
• Little Pipe Creek
• Little Seneca Creek
  Little Seneca Creek
  Little Seneca Creek is an stream in Montgomery County, Maryland, roughly northwest of Washington, D.C. The creek drains portions of Clarksburg, Germantown, and Boyds. It rises south of Damascus and flows southward about to Little Seneca Lake, a reservoir created by construction of a dam on the...
  
  
• Little Tuscarora Creek
• Little Youghiogheny River
• Lyons Creek
• Magothy River
  Magothy River
  The Magothy River runs through Anne Arundel County in the U.S. state of Maryland. It is located south of the Patapsco River and north of the Severn River...
  
  
• Marley Creek
• Marsh Creek
  Marsh Creek (Monocacy River)
  Marsh Creek is a tributary of the Monocacy River in south-central Pennsylvania and north-central Maryland in the United States. Marsh Creek and Rock Creek join below Gettysburg and the Gettysburg Battlefield to form the Monocacy River...
  
  
• Marshyhope Creek
  Marshyhope Creek
  Marshyhope Creek is a tributary of the Nanticoke River on the Delmarva Peninsula. It rises in Kent County, Delaware, and runs through Caroline County, Maryland, and Dorchester County, Maryland....
  
  
• Mattawoman Creek
  Mattawoman Creek
  Mattawoman Creek is a coastal-plain tributary to the tidal Potomac River with a mouth at Indian Head, Maryland, downstream of Washington, D.C. It comprises a river flowing through Prince George's and Charles counties and a tidal-freshwater estuary in Charles County...
  
  
• Middle Creek
  Middle Creek (Toms Creek)
  Middle Creek is a stream in Pennsylvania and Maryland. It is a tributary of Toms Creek, joining it near Emmitsburg, Maryland. Water from Middle Creek flows via Toms Creek, the Monocacy River, and the Potomac River to Chesapeake Bay and eventually the Atlantic Ocean....
  
  
• Middle Patuxent River
• Middle River
  Middle River (Maryland)
  Middle River is an estuary in Baltimore County, Maryland, located about 5 miles east of the city of Baltimore. The estuary extends from the community of Middle River, north of the Martin Plaza Shopping Center, to the southeast for about 4 miles , to the Chesapeake Bay...
  
  
• Minnehaha Branch
• Monocacy River
  Monocacy River
  The Monocacy River is a free-flowing tributary of the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The river is long, with a drainage area of about...
  
  
• Moores Run
• Muddy Branch
  Muddy Branch
  Muddy Branch is a tributary stream of the Potomac River in Montgomery County, Maryland, located about northwest of Washington, D.C. The headwaters of the stream originate in Gaithersburg, and the stream flows southwest for , through Muddy Branch Park and Blockhouse Point Conservation Park, under...
  
  
• Nanjemoy Creek
  Nanjemoy Creek
  Nanjemoy Creek is a tidal tributary of the Potomac River in Charles County, Maryland, USA, located between Cedar Point Neck and Tayloe Neck.The Nature Conservancy established its Nanjemoy Creek Preserve in 1978, which protects more than in the watershed...
  
  
• Nanticoke River
  Nanticoke River
  The Nanticoke River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It rises in southern Kent County, Delaware, flows through Sussex County, Delaware, and forms the boundary between Dorchester County, Maryland and Wicomico County, Maryland. The river course proceeds southwest...
  
  
• North Branch Patapsco River
  Patapsco River
  The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
  
  
• North Branch Potomac River
  Potomac River
  The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...
  
  
• North East River
  North East River
  The North East River is the northernmost arm of Chesapeake Bay in Maryland, the United States. Entirely tidal, it extends for from the town of North East, southwest past Charlestown to the main body of Chesapeake Bay between Carpenter Point and Red Point. The river is fed by North East Creek and...
  
  
• Northeast Branch Anacostia River
  Northeast Branch Anacostia River
  Northeast Branch Anacostia River is a free-flowing stream in Prince George's County, Maryland. It is a tributary of the Anacostia River, which flows to the Potomac River and the Chesapeake Bay.-Course:...
  
  
• Northwest Branch Anacostia River
  Northwest Branch Anacostia River
  Northwest Branch Anacostia River is a free-flowing stream in Montgomery County and Prince George's County, Maryland. It is a tributary of the Anacostia River, which flows to the Potomac River and the Chesapeake Bay.-Course:...
  
  
• Northwest Branch Patapsco River
  Patapsco River
  The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
  
  
• Octoraro Creek
  Octoraro Creek
  Octoraro Creek is a tributary of the Susquehanna River, joining it above the Susquehanna's mouth at Chesapeake Bay. The Octoraro rises as an East and West Branch in Pennsylvania. The East Branch and Octoraro Creek form the southern half of the border between Lancaster and Chester counties until...
  
  
• Oxon Creek
  Oxon Creek
  Oxon Creek is a cove on the Potomac River which straddles the border between Washington, D.C. and Prince George's County, Maryland just north of Interstate 495 at Woodrow Wilson Bridge. The tributary stream is Oxon Run. Oxon Creek is in length and empties into the Potomac at Goose Island across...
  
  
• Owens Creek
• Paint Branch
  Paint Branch
  Paint Branch is a stream that flows through Montgomery County and Prince George's County, Maryland. It is a tributary of the Northeast Branch, which flows to the Anacostia River, Potomac River and the Chesapeake Bay....
  
  
• Patapsco River
  Patapsco River
  The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
  
  
• Patuxent River
  Patuxent River
  The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between...
  
  
• Piscataway Creek
  Piscataway Creek
  Piscataway Creek is an tributary of the Potomac River in Prince George's County, Maryland. The creek is a tidal arm of the Potomac for its final , entering the Potomac at Fort Washington Park. Tinkers Creek is a tributary to Piscataway Creek, converging from the north upstream of the mouth of the...
  
  
• Pocomoke River
  Pocomoke River
  The Pocomoke River stretches approximately from southern Delaware through southeastern Maryland in the United States. At its mouth, the river is essentially an arm of Chesapeake Bay, whereas the upper river flows through a series of relatively inaccessible wetlands called the Great Cypress Swamp,...
  
  
• Pomonkey Creek
  Pomonkey Creek
  Pomonkey Creek is a tidal tributary of the Potomac River, near Bryans Road, Maryland. It is named for one of the Indian tribes living in the area.-External links:*...
  
  
• Popes Creek
• Port Tobacco River
  Port Tobacco River
  The Port Tobacco River is a tidal tributary of the Potomac River located in Charles County, Maryland in the United States. The river is approximately in length. The river was once the site of the thriving Port Tobacco, the county seat of Charles County from 1658 to 1895.-External links:*...
  
  
• Potomac River
  Potomac River
  The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...
  
  
• Rhode River
  Rhode River
  The Rhode River is a tidal tributary of the West River in Anne Arundel County, Maryland. It is south of the South River.These are its named tidal creeks and coves starting at the upper end and going clockwise, with a lower-order tributary listed after the "&" symbol: The locations of all of...
  
  
• Rock Creek (Monocacy River)
• Rock Creek (Potomac River)
  Rock Creek (Potomac River)
  Rock Creek is a free-flowing tributary of the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The creek is long, with a drainage area of about...
  
  
• Rock Run
  Rock Run (Potomac River)
  Rock Run is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream rise in the village of Potomac, and the creek flows southeast for to the Potomac River.-External links:...
  
  
• St. Marys River
  St. Marys River (Maryland)
  The St. Marys River is a river in southern Maryland in the United States. It rises in southern St. Mary's County, and flows to the southeast through Great Mills, widening into a tidal estuary near St. Marys City, approximately wide at its mouth on the Potomac River, near the Chesapeake...
  
  
• Saltpeter Creek
• Sams Creek
• Sassafras River
  Sassafras River
  The Sassafras River is a tributary of the Chesapeake Bay on the Delmarva Peninsula in the United States. It is about long and starts in western New Castle County, Delaware, and along the boundary between Cecil County, Maryland on the north and Kent County, Maryland on the south...
  
  
• Savage River
  Savage River (Maryland)
  The Savage River is a river in Garrett County, Maryland, and is the first major tributary of the North Branch Potomac River from its source. The river was named for 18th century surveyor John Savage....
  
  
• Seneca Creek
  Seneca Creek
  Seneca Creek may refer to some water bodies in the United States:* Seneca Creek , Maryland** Seneca Creek State Park* Seneca Creek , West Virginia...
  
  
• Severn River
  Severn River (Maryland)
  The Severn River runs through Anne Arundel County in the U.S. state of Maryland. It is located south of the Magothy River, and north of the South River.-Geography:...
  
  
• Sideling Hill Creek
• Sligo Creek
  Sligo Creek
  Sligo Creek is a free-flowing tributary of the Northwest Branch of the Anacostia River in Maryland. The creek is approximately long, with a drainage area of about .- Geography :The creek rises in the Kemp Mill section of Silver Spring in Montgomery County and...
  
  
• South Branch Patapsco River
  Patapsco River
  The Patapsco River is a river in central Maryland which flows into Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore...
  
  
• South River
  South River (Maryland)
  The South River is a tributary of the Chesapeake Bay in Anne Arundel County, Maryland in the United States.The South River is located south of the Severn River, east of the Patuxent River, and north of the West River and Rhode River, and drains to the Chesapeake Bay.It has a watershed area of ,...
  
  
• Stony Creek
• Susquehanna River
  Susquehanna River
  The Susquehanna River is a river located in the northeastern United States. At long, it is the longest river on the American east coast that drains into the Atlantic Ocean, and with its watershed it is the 16th largest river in the United States, and the longest river in the continental United...
  
  
• Swanson Creek
• Toms Creek
• Tonoloway Creek
  Tonoloway Creek
  Tonoloway Creek, also known as Great Tonoloway Creek, is a tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania.Tonoloway Creek empties into the Potomac River at Hancock, Maryland.-Tributaries:...
  
  
• Town Creek (Patuxent River)
  Town Creek (Patuxent River)
  Town Creek is a tributary of the Patuxent River in Saint Mary's County, Maryland.-Geography:The headwaters are located in the community of California, Maryland on the east side of Maryland Route 235. The creek flows north about to the Patuxent River, which drains to the Chesapeake Bay...
  
  
• Town Creek (Potomac River)
  Town Creek (Potomac River)
  Town Creek is a tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania. The creek is formed from the confluence of Sweet Root Creek and Elk Lick Creek, about south of Buchanan State Forest in Bedford County, Pennsylvania. Town Creek flows south along the base of...
  
  
• Town Creek (Tred Avon River)
  Town Creek (Tred Avon River)
  Town Creek is a tributary of the Tred Avon River in Talbot County on Maryland's Eastern Shore.-Geography:The headwaters are located in Oxford and the creek flows north to the Tred Avon River, which drains to the Choptank River and the Chesapeake Bay...
  
  
• Tuckahoe Creek
  Tuckahoe Creek
  Tuckahoe Creek is a tributary of the Choptank River on Maryland's Eastern Shore. It is sometimes referred to as the Tuckahoe River. Upstream of Hillsboro, it forms the boundary between Caroline County and Queen Anne's County, passing through Tuckahoe State Park and dividing the small towns of...
  
  
• Tuscarora Creek (Monocacy River)
  Tuscarora Creek (Monocacy River)
  Tuscarora Creek is a tributary of the Monocacy River in Frederick County, Maryland, in the United States.The creek rises at the eastern base of Catoctin Mountain, about north-northwest of the city of Frederick, and flows southeast about to its mouth at the Monocacy...
  
  
• Tuscarora Creek (Potomac River)
  Tuscarora Creek (Potomac River)
  Tuscarora Creek is a tributary of the Potomac River in Frederick County, Maryland, in the United States.The creek rises east of the community of Jefferson, about southwest of the city of Frederick, and flows south to its mouth at the Potomac.-References:...
  
  
• Watts Branch (Anacostia River)
  Watts Branch (Anacostia River)
  Watts Branch is a tributary stream of the Anacostia River in Prince George's County, Maryland, and Washington, D.C. The headwaters of the stream originate in the Capitol Heights area of Prince George's County, and the branch flows roughly...
  
  
• Watts Branch (Potomac River)
  Watts Branch (Potomac River)
  Watts Branch is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream originate in the city of Rockville, and the branch flows southwest for , under the C&O Canal near Swain's Lock, to the Potomac River, which drains to the Chesapeake Bay...
  
  
• West River
  West River (Maryland)
  The West River is a tidal tributary of Chesapeake Bay in southern Anne Arundel County, Maryland. It is south of the Rhode River, which is one of its tributaries, and north of Herring Bay....
  
  
• Western Branch Patuxent River
  Patuxent River
  The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between...
  
  
• Wicomico River (Maryland eastern shore)
  Wicomico River (Maryland eastern shore)
  The Wicomico River is a tributary of the Chesapeake Bay on the eastern shore of Maryland. It drains an area of low marshlands and farming country in the middle Delmarva Peninsula. The name "Wicomico" derives from the words wicko mekee, meaning "a place where houses are built," apparently...
  
  
• Wicomico River (Potomac River)
  Wicomico River (Potomac River)
  The Wicomico River is a tributary of the lower tidal portion of the Potomac River located in the U.S. state of Maryland south of Washington, DC. The river empties into the Potomac at Cobb Island and St. Margaret's Island. The Wicomico's watershed drains of Charles, St. Mary's, and southern Prince...
  
  
• Wills Creek
  Wills Creek (North Branch Potomac River)
  Wills Creek is a tributary of the North Branch Potomac River in Pennsylvania and Maryland in the United States.Wills Creek drops off the Allegheny Mountains of southeastern Somerset County, Pennsylvania, and enters the North Branch Potomac River at Cumberland, Maryland.-History:thumb|220px|Fort...
  
  
• Winters Run
  Winters Run
  Winters Run is a river in Harford County, Maryland. The river begins north of the community of Fallston at the confluence of the West and East Branches, and flows southeast about to Atkisson Dam in Edgewood. The dam and reservoir were built by the U.S. Army in 1942 to provide an auxiliary fresh...
  
  
• Wye River
  Wye River (Maryland)
  The Wye River is a tributary of the Chesapeake Bay, on the Eastern Shore of Maryland. It was named by the Lloyd family, Edward Lloyd , and Edward Lloyd , after the River Wye in Wales. It falls within Queen Anne's County and Talbot County, and joins the Miles River near its mouth to the Eastern Bay...
  
  
• Youghiogheny River
  Youghiogheny River
  The Youghiogheny River , or the Yough for short, is a tributary of the Monongahela River in the U.S. states of West Virginia, Maryland, and Pennsylvania...