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Patuxent River

Patuxent River
Patuxent River near Bowie
Country United States
State Maryland
 - left Little Patuxent River
 - right Western Branch
Cities Columbia, MD, Laurel, MD, Bowie, MD, Upper Marlboro, MD
 - location 2.3 miles southwest of Mount Airy, Maryland, USA
 - elevation 823 ft (251 m)
 - coordinates
Mouth Chesapeake Bay
 - location 2 mi. east of Solomons, Maryland, USA
 - elevation 0 ft (0 m)
 - coordinates
Length 115 mi (185 km)
Basin 927 sq mi (2,401 km2)
Discharge for Laurel, MD
 - average 171 cu ft/s (5 m3/s)
 - max 2,870 cu ft/s (81 m3/s)
 - min 8 cu ft/s (0 m3/s)
Discharge elsewhere (average)
 - Bowie, MD 647 cu ft/s (18 m3/s)
Patuxent River Watershed

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 the two. The 937-square-mile (2,427 km2) Patuxent watershed had a rapidly growing population of 590,769 in 2000. It is the largest and longest river entirely within Maryland, and its watershed is the largest completely within the state.


  • Geography 1
  • History 2
  • Economy and commerce 3
  • Environmental concerns 4
  • Bridges 5
  • See also 6
  • References 7
  • External links 8


The river source, 115 miles (185 km) from the Chesapeake, is in the hills of the Maryland Bowie, finding the Chesapeake Bay 52 miles (84 km) later. The fifty-two mile-long tidal estuary is never wider than 2.3 miles (3.7 km).

It marks the boundary between Charles and St. Mary's counties on the west and Howard, Anne Arundel, and Calvert counties on the east. The Chesapeake estuary's deepest point, 130 feet (40 m) below sea level, is in the lower Patuxent.

The Little Patuxent River, the Middle Patuxent River, and the Western Branch are the three largest tributaries. The Middle Patuxent flows into the Little Patuxent just upstream from the historic Collington Branch before it joins the Patuxent near Upper Marlboro.


Indians have lived along the Patuxent River since at least 6500 BC.[2] An archaeological dig at Pig Point (just north of Jug Bay at the end of Wrighton Road[3]) uncovered the oldest known artifacts in the Mid Atlantic states,[2] including pottery, arrow and spear points and remnants of wigwams, fires and foodways. The site was probably a center of trade in the region and has one of the best unbroken archaeological records on the East Coast.[2] The Pig Point site includes the oldest structures ever found in Maryland, wigwam post holes dating to the 3rd century.[2]

The Patuxent River was first named ("Pawtuxunt") on the detailed map resulting from the 1608 voyage upriver by

  • Patuxent River Watershed Profile - Montgomery County Department of Environmental Protection
  • Patuxent River State Park (upper river)
  • Patuxent River Park, Prince George's County (mid-river, west shore)
  • Jug Bay Wetlands Sanctuary, Anne Arundel County (mid-river, east shore)
  • Jug Bay component of the National Estuarine Research Reserve System (NERRS) in MD (mid-river, both shores)
  • PAX River Online (lower river, in the vicinity of Patuxent Naval Air Station)

External links

  1. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011
  2. ^ a b c d "Amazing artifacts unearthed at Pig Point", E.B. Furgurson III, The Archaeology News Network, April 2011. Original source: The Capital [April 17, 2011]
  3. ^ Pig Point Archaeology Site, at end of Wrighton Road, Bristol, via Google Maps
  4. ^ Smith, John (2006). The Generall Historie of Virginia, New-England, and the Summer Isles... (Electronic ed.). University of North Carolina at Chapel Hill. Retrieved 2007-10-29. 
  5. ^ John S. Salmon (2006-05-09). "Captain John Smith Chesapeake National Historic Water Trail - Statement of National Significance" (PDF). Chesapeake Bay Gateways Network. pp. page 136. Retrieved 2007-12-04. 
  6. ^ Wayne E. Clark (2005). "Indians in Maryland, An Overview". Maryland Online Encyclopedia. Retrieved 2007-12-04. 
  7. ^ "John Smith's Second Chesapeake Voyage". Chesapeake Bay Gateways Network. 2006. Retrieved 2007-12-04. 
  8. ^ Loker, Aleck (2006). Walter Raleigh's Virginia. Williamsburg, VA: Solitude Press. p. 108.  
  9. ^ by Kent Mountford"Closed Sea"Author Biography for . 2005. 
  10. ^ John S. Salmon (2006-05-09). "Captain John Smith Chesapeake National Historic Water Trail - Statement of National Significance" (PDF). Chesapeake Bay Gateways Network. Retrieved 2007-12-03. 
  11. ^ U.S. Army Engineer Water Resources Support Center (January 1983). "History of the Waterways of the Atlantic Coast of the United States (NWS 83-10) - Chronology" (PDF). U. S. Army Corp of Engineers. Archived from the original (PDF) on 2007-08-24. Retrieved 2007-12-03. 
  12. ^ Howard's Roads to the Past. Howard County Sesquicentennial Celebration Committee, 2001. 2001. p. 2. 
  13. ^ Joshua Dorsey Warfield. The founders of Anne Arundel and Howard Counties, Maryland. p. 337. 
  14. ^ Hester Dorsey Richardson. Side-lights on Maryland History: With Sketches of Early Maryland, Volume 2. p. 290. 
  15. ^ Frederick Adams Virkus, Albert Nelson Marquis. The Compendium of American Genealogy: First Families of America; the Standard Genealogical Encyclopedia of the United States, Volume 7. A. N. Marquis, 1942. 
  16. ^ Robert C. Chidester. "A Historic Context for the Archaeology of Industrial Labor in the State of Maryland". The Center for Heritage Resource Studies, University of Maryland. Retrieved 2007-10-01. 
  17. ^ Peter M. Kranz. Notes on the Sedimentary Iron Ores of Maryland and their Dinosaurian Fauna. Appendix B: University of Maryland. Retrieved 2007-10-01. 
  18. ^ Shomette, Donald (1982). Shipwrecks on the Chesapeake. Centreville, Maryland: Tidewater Publishers. pp. 87–93.  
  19. ^ Ross, Gen. (October 1814). "Dispatch from Gen. Ross". The Gentleman's Magazine, London Gazette Extraordinary (Original from the University of Michigan, Digitized by Google: E. Cave). v.84 pt.2: 372. Retrieved 2007-10-30. 
  20. ^ Washington Suburban Sanitary Commission. Laurel, MD (2007). "The WSSC-- A Thumbnail History." Accessed 2010-02-15.
  21. ^ Maryland Department of the Environment. Baltimore, MD (2006). "Maryland Dams Endure Dramatic Rainfall." eMDE (online newsletter). V.2, No. 6, October 2006.
  22. ^ "Bernie Fowler Wade-in Draws Attention to Patuxent Water Quality". Chesapeake Bay Program. 2007-06-14. Retrieved 2007-12-04. 
    Quote attributed to Congressman Steny Hoyer.
  23. ^ Tidewater Ecosystem Assessment Office (2007-08-01). "Maryland Tributary Strategy: Patuxent River Basin Summary Report for 1985-2005 Data" (PDF). Maryland Department of Natural Resources. pp. pages 3 and 6. Retrieved 2007-12-06. 
  24. ^ Karl Blankenship (January 2007). "Bay Journal: Chesapeake Cleanup Update - River Basin Overviews(Patuxent)" (PDF). Alliance for the Chesapeake Bay. Retrieved 2007-12-06. 
  25. ^ Patuxent River Commission (2004). "Summary of June 2004 Meeting Minutes" (PDF). Retrieved 2007-12-05. 
  26. ^ Patuxent Riverkeeper


See also

Crossing Carries Location Coordinates
Montgomery County – Howard County
MD 27 bridge MD 27 (Ridge Road) Southwest of Mt. Airy
Windsor Forest Road bridge Windsor Forest Road Southwest of Mt. Airy
Long Corner Road bridge Long Corner Road Damascus
MD 94 bridge MD 94 (Annapolis Rock Road/Woodbine Road) Damascus
Mullinix Mill Road bridge Mullinix Mill Road Damascus
Hipsley Mill Road bridge Hipsley Mill Road Etchison
Howard Chapel Road bridge Howard Chapel Road Unity
MD 97 bridge MD 97 (Georgia Avenue/Roxbury Mills Road) North of Brookeville
Triadelphia Reservoir Brighton Dam Road Brookeville
Haviland Mill Road bridge Haviland Mill Road Brinklow
Mink Hollow Road bridge Mink Hollow Road Brinklow
Snell's Bridge MD 108 (Ashton Road/Clarksville Pike) Ashton
Brown's Bridge Ednor Road/Browns Bridge Road Ashton
US 29 bridge over Rocky Gorge Reservoir US 29 (Columbia Pike) North of Burtonsville
Prince George's County – Howard County
I-95 bridge near T. Howard Duckett Dam I-95 Laurel
MD 216 bridge MD 216 (7th Street) Laurel
US 1 bridges US 1 (Washington Boulevard, southbound traffic; 2nd Street, northbound traffic) Laurel
Howard County – Prince George's County – Anne Arundel County
B&O bridge B&O Capital Subdivision Laurel
Prince George's County – Anne Arundel County
MD 198 bridge MD 198 (Laurel Fort Meade Road) Laurel
Brock Bridge Road bridge Brock Bridge Road Laurel
Baltimore–Washington Parkway bridge Baltimore-Washington Parkway Laurel
Duval Bridge
(not open to public vehicular traffic)
Old Telegraph Road (Lago Road) Patuxent Wildlife Research Center
Northeast Corridor bridge Amtrak Northeast Corridor Bowie (near Bowie State University)
Priest Bridge MD 3 (Robert Crain Highway) Bowie
US 50 bridge I-595 / US 50 / US 301 (John Hanson Highway) Davidsonville
Governor's Bridge Governor Bridge Road Davidsonville
MD 214 bridge MD 214 (Central Avenue) Queen Anne
Queen Anne Bridge
(closed in 2007 to all use)
Queen Anne Bridge Road Queen Anne
Hills Bridge MD 4 (Pennsylvania Avenue) Upper Marlboro
Calvert CountyCharles County
Benedict Bridge MD 231 Benedict
Calvert CountySt. Mary's County
Governor Thomas Johnson Bridge MD 4 Solomons


Over the past 50 years, nationally recognized land preservation efforts in this part of Maryland have saved tens of thousands of acres from the Baltimore-Washington bedroom community sprawl. The southern half of the U.S. Army's Fort Meade was added to the Patuxent Wildlife Research Center, which, at 12,300 acres (50 km2), is the second largest contiguous public park-refuge within 30 miles (50 km) of either Washington or Baltimore. It is located midway between these two cities. The contiguous public area of 8,575 acres (35 km2) centered on Jug Bay, 42 miles (68 km) upriver from the Chesapeake, form the fifth largest such Baltimore-DC preserve and largest tidewater one and consist of the Jug Bay Wetlands Sanctuary, the Merkle Wildlife Sanctuary, and the Jug Bay component of the Patuxent River Park. The 6,600-acre (27 km2) Patuxent River State Park in the uppermost part of the basin is the seventh largest.

In 2004 Fred Tutman became the first Nottingham.[26]

"The Patuxent River has known no greater friend, advocate and defender than Bernie Fowler."[22] Fowler, as an early-1970s Calvert County Commissioner, led the way in a lawsuit filed by downriver Charles, Calvert and St. Mary's counties against upriver counties. The lawsuit forced the state, the upriver counties, and the U.S. Environmental Protection Agency to enact pollution control measures. Between 1985 and 2005, the Patuxent saw a 26% decrease in nitrogen, a 46% decrease in phosphorus, and a 35% reduction in sediment, despite urban areas increasing to 31% of the watershed by 2002. Of the Chesapeake's major tributaries, the Patuxent is the only one having most of its harmful phosphorus and nitrogen nutrient overloads coming from urban runoff. The river's other two largest contributors, point sources (industrial, sewage, etc.) and the declining (24%) agricultural areas, contribute less of the nutrient load. Forested areas account for 43% of the watershed.[23][24]

The Middle and Little Patuxent watersheds include nearly all of Columbia, Maryland, including its downtown urban Lake Kittamaqundi and Wilde Lake. Columbia is a large planned community in Howard County that opened in 1967. Columbia's major downtown roadway is called Little Patuxent Parkway, and Maryland Route 175 in East Columbia was known as the Patuxent Parkway until May 2006, when it was renamed for Columbia's founder, the late James Rouse, and his wife, Patty. It was the largely unchecked erosion from this late 1960s and 1970s building spree that contributed the bulk of the Patuxent River's highest and most damaging sediment, siltation, and pollution levels to date downstream. This in turn led to a nearly complete destruction of a once thriving seafood industry along the brackish portion of the river.

Environmental concerns

With public recreational land on one or both shores of 74 of the river's 115 miles including the reservoir land, the impact that recreation in natural settings now has on the river's economy is obvious. The Patuxent Naval Air Station at the mouth of the river has continued to grow over past decades, providing along with tourism another main economic engine in the lower river valley which includes the popular boating center of Solomons.

[21]) accessible to the public for horseback riding, hunting, fishing, and picnicking in limited areas. The state of Maryland classifies the T. Howard Duckett Dam as "high hazard" because large releases of water flood areas of North Laurel.2 The land surrounding the two reservoirs is administered by the WSSC, creating a forested reserve of 4,400 acres (18 km[20] The

The Patuxent was plied by regular steamship service, mostly from the Weems Line, from the 1820s to the 1920s, replacing the schooners and sailing packets that had for the previous centuries served the river's many landings and docks along the 52-mile (84 km) tidal reach.

Destruction of the plantations by the British and of the soil by centuries of tobacco farming brought the mid and lower Patuxent valley into a period of decline that would last until the 1930s, when there were fewer residents in the Patuxent's Calvert County than there were in the 1840s, and only a few hundred more than in the first Calvert County census in 1790.

Tobacco farming dominated the Patuxent's economy for the two centuries following settlement, with about sixty percent of Maryland's tobacco coming from the Patuxent valley by the late 18th century.

Economy and commerce

In August 1814, Commodore magazines of his ships in the four mile (6 km) stretch above Pig Point (44 miles (71 km) upriver from the Chesapeake and named after Snowden's "pig iron") when the British approached.[18] The British then launched their attack on Washington, D.C., from their warships in the Patuxent at Benedict. 22 miles (35 km) From there, the troops marched through, Nottingham, Upper Marlboro, Bladensburg and on to Washington.[19]

, also part of Patuxent River Park. Montpelier Mansion" downriver from the current vicinity of the 1783 pig iron was shipping "[17][16],Laurel) just southeast of Patuxent Furnace furnace (also known as iron ore. By the 1730s, the Snowden Patuxent River Park, two 18th-century mansions 44 miles (71 km) upriver from the Chesapeake that are today part of Billingsley Point and Mt. Calvert spread upriver to colonists By the mid and late 17th century respectively, [15][14][13][12] is sited.Clarksville In 1699, Thomas Browne, a Patuxent Ranger, followed the river from the Snowden plantation to where [11][10][9] [8] is believed to have anchored for the night in the Patuxent mouth.Vicente Gonzalez expedition under Spanish This was most likely the second visit by Europeans to the Patuxent, as in June 1588 a small [7][6][5]

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