Deer Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
, accessed August 8, 2011 river in

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean t ...

and

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

that flows through the scenic areas of

Harford County Harford County is located in the U.S. state of Maryland. As of the 2020 census, the population was 260,924. Its county seat is Bel Air. Harford County is included in the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area, which is al ...

and empties into the

Susquehanna River The Susquehanna River (; Lenape: Siskëwahane) is a major river located in the Mid-Atlantic region of the United States, overlapping between the lower Northeast and the Upland South. At long, it is the longest river on the East Coast of the ...

, roughly halfway between the

Interstate 95 Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running from US Route 1 (US 1) in Miami, Florida, to the Houlton–Woodstock Border Crossing between Maine and the Canadia ...

bridge and

Conowingo Dam The Conowingo Dam (also Conowingo Hydroelectric Plant, Conowingo Hydroelectric Station) is a large hydroelectric dam in the lower Susquehanna River near the town of Conowingo, Maryland. The medium-height, masonry gravity dam is one of the large ...

. Its watershed area is .Deer Creek Watershed Restoration Action Strategy, Harford County Dept. of Planning and Zoning, 200

, accessed June 13, 2012 Its watershed area in MD (excluding water) is , with 3% impervious surface in 1994.Deer Creek, MD Surf your watershed, Watershed profile

accessed June 13, 2012 It serves as a divider between the agricultural and urban/suburban areas of Harford County. Deer Creek Maryland

Deer Creek rises in Shrewsbury, Pennsylvania, Shrewsbury in

York County, Pennsylvania York County ( Pennsylvania Dutch: Yarrick Kaundi) is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 456,438. Its county seat is York. The county was created on August 19, 1749, from part of Lancaster ...

, and flows southeast, soon entering Maryland. It cuts across the northeastern corner of

Baltimore County Baltimore County ( , locally: or ) is the third-most populous county in the U.S. state of Maryland and is part of the Baltimore metropolitan area. Baltimore County (which partially surrounds, though does not include, the independent City ...

and into Harford County, where it runs through Rocks State Park, Palmer State Park, and Susquehanna State Park, passing north of the Bel Air area. The only dam on Deer Creek, th
Wilson Mill Dam
is located along Glenville Road in Harford County. A Denil (baffle) fish ladder was built beside the dam in 2000, re-opening approximately 25 miles of spawning habitat to several

anadromous fish Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousan ...

species. Deer Creek supported the last known population of the

Maryland darter The Maryland darter (''Etheostoma sellare'') is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is considered one ...

, the only

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

vertebrate Vertebrates () comprise all animal taxa within the subphylum Vertebrata () ( chordates with backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with ...

in Marylan

The creek is commonly used for recreation in the summer months. The

Deer Creek Bridge, Stewartstown Railroad Deer Creek Bridge, Railroad was a historic railroad bridge in Hopewell Township and Shrewsbury Township, York County, Pennsylvania. It was built about 1895, and measures and overall. The girder bridge was built by the Stewartstown Railroad ...

carries the

Stewartstown Railroad The Stewartstown Railroad is a heritage railroad in Stewartstown, Pennsylvania. Chartered in 1884 by local interests in the Stewartstown area and opened in 1885, the Stewartstown Railroad survives today in very much original condition and retain ...

over Deer Creek in Hopewell Township and Shrewsbury Township, Pennsylvania. ''Note:'' This includes

References

{{Coord, 39, 37, 34.98, N, 76, 18, 38, W, display=title, type:waterbody Rivers of Harford County, Maryland Rivers of Maryland Rivers of Pennsylvania