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707:.) The remaining segments of the Anacostia storage system were completed in September 2023 and will reduce sewage overflows by 98 percent. The major structure is a 12,500 feet (3,800 m) long, 23 feet (7.0 m) diameter reinforced concrete tunnel, buried approximately 80 to 120 feet deep. The overall Clean Rivers project will comprise over 18 miles (29 km) of tunnels with a storage capacity of 157 million US gallons (590,000 m).
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recorded in his journals that he sailed up the "Eastern Branch" or
Anacostia River, in 1608 in his search for the main branch of the Potomac River and was well received by the Anacostans. On earlier maps, the river was known as the "Eastern Branch of the Potomac River" until it received its current,
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In response to the litigation, in 2011 DCWASA began building a large system of sewage storage tunnels to reduce combined sewer overflow. Four deep storage tunnels next to the
Anacostia and Potomac Rivers will reduce overflows to the Anacostia by 98 percent, and 96 percent system-wide. The
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Office of
Response and Restoration, many citizens living along the Anacostia River have been exposed to water pollution. One study done on recreational exposure to pollution along the river showed that many people reported "exposure to water while canoeing, kayaking, rowing, rafting, and paddling,
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This project came at an especially important moment for
Anacostia River health, as the D.C. area weathered intense rain in 2018 which contributed to much sediment, waste, and organic material flowing into the river. River health has improved since, as noted in the watershed society's 2019 river
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Swimming or wading in the
Anacostia became illegal in 1971. However, as of 2019, city officials are considering changing this law and building public river pools. DOEE Director Tommy Wells said, “I believe we will have swimming platforms in Washington, D.C. by 2025."
687:(WSSC), the sewage authority in Maryland, over similar problems with river contamination from the Maryland suburbs. According to WSSC, more than 4 million US gallons (15,000 m) of raw sewage were released into Anacostia tributaries between January 2001 and June 2004.
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The pilot project began in 2018 when the
Anacostia Watershed Society harvested 9,000 quarter-sized mussels and placed them in the river in protective baskets. In 2019, after 92% of the mussels survived the first year of the project, the
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Freshwater mussels have tougher meat than saltwater mussels, so local restaurants are unlikely to buy them. “Without commercial demand for freshwater mussels, funding for their restoration hinges on proof of their ability to save rivers,"
699:(EPA), the D.C. government is implementing a stormwater management program to improve water quality in the Anacostia. The governments of Montgomery County and Prince George's County also operate stormwater management programs.
765:, which are filter feeders, have a strong capability to clean water. The Anacostia Watershed Society estimates that the mussels have already purified 32 million gallons of water in the first year of this project.
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and members of this group also reported getting water in their mouth while recreating." This exposure to polluted water has potential adverse effects on the health of individuals and their community.
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first segment of the tunnel system, 7 miles (11 km) in length, opened in 2018. (The city's overall "Clean Rivers" project, projected to cost $ 2.6 billion, includes other components, such as
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773:(DOEE) gave the watershed society a $ 400,000 grant to put another 35,000 mussels in the river. Half of this funding came from the federal government, and the other half came from a
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overflow system. In settling the lawsuit, WASA agreed to invest $ 140 million on pump station rehabilitation, pipe cleaning and maintenance and public notices of overflows.
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report card. The
Anacostia earned its second-best-ever grade in the 2019 State of the Anacostia Report Card, but still failed the evaluation, earning a 51 percent.
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on river water quality and overall river health. This effort has happened in conjunction with a movement to make the river a popular local water recreation site.
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up to the vicinity of present-day
Washington where the confluence with the modern Anacostia (then called the Eastern Branch or St. Isidora's Creek) and
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In May 2009, a
Bandalong Litter Trap floating litter-control system was placed in the Watts Branch tributary of the Anacostia River as part of Mayor
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that enters the river and its tributaries. During rainstorms, the river receives discharges of untreated sewage due to the city's antiquated
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Another large source of river pollution is the
Washington Navy Yard, which is sited alongside the river and is believed to be a source of
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along its banks made it "D.C.'s forgotten river". More recently, however, private organizations; local businesses; and the D.C.,
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534:. The city canal fell into disuse in the late 19th century, and the city government covered over or filled in various sections.
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1163:"Should We Put Our Feet in the Water? Use of a Survey to Assess Recreational Exposures to Contaminants in the Anacostia River"
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1219:"Study Reveals D.C. Community near Anacostia River Are Eating and Sharing Contaminated Fish | response.restoration.noaa.gov"
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and its vicinity circa 1960. The Anacostia River runs diagonally from upper left to lower right center, crossed by the
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official name. In the mid-1600s, the name "Annacostin River" was applied to the stretch of the Potomac River north of
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2007 Implementation Plan: District of Columbia NPDES Permit No. DC0000221 Municipal Separate Storm Sewer System.
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668:(DCWASA) in 1999 for allowing more than 2 billion US gallons (7,600,000 m) of combined sewage and
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408:. It is about 8.7 miles (14.0 km) long. The name "Anacostia" derives from the area's early history as
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Since 2018, thousands of mussels have been placed in the Anacostia in an effort to reduce the impact of
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1993:
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1626:"Anacostia River Watershed Restoration Plan: Interim Report Framework, September 2007–November 2008."
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governments have made efforts to reduce pollution and protect the ecologically valuable Anacostia
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2008:
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2013:
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586:. The reason given is: status of WSSC lawsuit, EPA discharge permit and litter control system.
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and northern Prince George's County, as well as most of the eastern half of Washington, D.C.
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Please help update this article to reflect recent events or newly available information.
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via 28 miles (45 km) of paved, shared-use path with connections and spurs to the
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Montgomery County. Department of Environmental Protection. Rockville, MD. May 2003.
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U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data.
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1301:"DC Water's Anacostia River Tunnel beating all projections for a cleaner Anacostia"
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Aerial view of Southeast DC in 2009 showing the progress of the Anacostia River
677:
630:
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1303:. District of Columbia Water and Sewer Authority (DCWASA). September 21, 2018.
1064:"The Annacostin Indian Fort: Appendix — Potomac River Called Annacostin River"
842:(partially complete as of June 2016) connects Bladensburg Waterfront Park the
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operated from 1815 until the mid-1850s, initially connecting the Anacostia to
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District of Columbia. Department of the Environment (DDOE). August 17, 2007.
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U.S. Geological Survey Geographic Names Information System: Anacostia River
748:
736:
669:
476:
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Prince George's County Department of Parks and Recreation, Riverdale, MD.
1474:"Can tens of thousands of mussels help save the polluted Anacostia River?"
1333:"New Anacostia River Tunnel Goes Online, Will Cut Sewage Overflows By 98%"
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Prince George's County Government. Upper Marlboro, MD. October 26, 2007.
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of the river covers roughly 176 sq mi (460 km) in eastern
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Maryland Department of Natural Resources: Anacostia River Basin website
1443:"Bandalong Litter Trap™ Case Study: Washington, D.C.'s Anacostia River"
1186:
803:
673:
512:
452:
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815:
The Anacostia River, in Washington, DC, near Kingman Island, June 2017
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Clean Rivers Project News: Combined Sewer Overflow Control Activities
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In late 2004, AWS and other organizations announced plans to sue the
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468:
448:
1413:
4084:
2969:
2959:
638:
389:
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1600:"Anacostia Riverwalk Trail | Anacostia Waterfront Initiative"
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Montgomery County's Commitment to Anacostia Watershed Restoration.
30:
762:
626:
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One of the biggest problems facing the Anacostia River is raw
1657:
835:, a community rowing school, and several local high schools.
633:
system. The sewage creates a public health threat because of
16:
River in Maryland and the District of Columbia, United States
1496:"Can Thousands of Mussels Become Millions in the Anacostia?"
1662:
372:
369:
351:
1031:"The history of the Anacostia River - The Washington Post"
360:
1122:
Heine, Cornelius W. (1953). "The Washington City Canal".
345:
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1678:
PBS.org: Bill Moyers Journal — Earth Conservation Corps
1512:
1287:
Prince George's County Announces Anacostia Initiatives.
695:
Under a stormwater discharge permit issued by the U.S.
656:
According to Rianna Murray et al. and a study from the
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was constructed south of the river in order to prevent
363:
357:
348:
1624:
Anacostia Watershed Restoration Partnership (2008).
896:
366:
354:
1161:Murray, Rianna; Wilson, Sacoby (April 29, 2015).
690:
519:formed a natural harbor called St. Thomas's Bay.
4405:
1320:(Report). DCWASA. October 2011. Biannual Report.
664:The Anacostia Watershed Society (AWS) sued the
4107:
3992:
666:District of Columbia Water and Sewer Authority
2902:
1698:
1631:United States Geological Survey. Reston, VA.
1537:"Could We Be Swimming In D.C.'s Rivers Soon?"
977:United States Environmental Protection Agency
1160:
676:) to flow into the river via its antiquated
1663:Anacostia Watershed Restoration Partnership
1441:Storm Water Systems Inc. (March 28, 2011).
285:216.93 cu ft/s (6.143 m/s) (
4424:Rivers of Prince George's County, Maryland
2909:
2895:
1705:
1691:
1397:
1124:Records of the Columbia Historical Society
483:, Lower Beaverdam Creek, and Hickory Run.
1515:"2019 State of the Anacostia Report Card"
1194:
798:
771:D.C. Department of Energy and Environment
423:in the Anacostia and weak investment and
4275:
2916:
1471:
1343:from the original on September 19, 2023.
1085:– via Archives of Maryland Online.
888:List of crossings of the Anacostia River
872:
864:
810:
802:
726:
719:contaminants in the river and sediment.
604:
536:
530:and the Potomac River; and later to the
412:, a settlement of Necostan or Anacostan
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3294:
3012:
1534:
1330:
685:Washington Suburban Sanitary Commission
4406:
1712:
1547:from the original on October 28, 2019.
1493:
1398:Farenthold, David A. (June 17, 2008).
969:
4274:
4198:
4148:South Fork South Branch Potomac River
4120:North Fork South Branch Potomac River
4106:
3991:
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3293:
3011:
2890:
1686:
1489:
1487:
1467:
1465:
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1331:Fenston, Jacob (September 18, 2023).
1138:Historical Society of Washington, DC.
1121:
1061:
416:on the banks of the Anacostia River.
4199:
2979:Streams shown as: Major tributaries
1494:Pipkin, Whitney (October 24, 2019).
1472:Nirappil, Fenit (October 23, 2019).
1156:
1154:
1152:
710:
568:
384:of the United States. It flows from
54:Map of the Anacostia River watershed
1637:Geographic Names Information System
1448:(Press release). Cleveland, Georgia
981:"Watershed Report: Anacostia River"
877:Anacostia River in SE Washington DC
869:Anacostia River in NE Washington DC
13:
1484:
1460:
1339:. WAMU American University Radio.
1003:
936:List of rivers of Washington, D.C.
926:Frederick Douglass Memorial Bridge
833:The Catholic University of America
619:Sousa Bridge (Pennsylvania Avenue)
451:of the Anacostia is formed by the
14:
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1646:
1149:
991:from the original on July 9, 2021
742:
722:
253:176 sq mi (460 km)
4419:Tributaries of the Potomac River
2494:Northwest Branch Anacostia River
2489:Northeast Branch Anacostia River
1673:Earth Conservation Corps website
1535:Fenston, Jacob (July 23, 2019).
1355:"Anacostia River Tunnel Project"
922:(neighborhood in Washington, DC)
899:
573:
400:and ultimately empties into the
341:
48:
37:United States National Arboretum
35:Anacostia River adjacent to the
29:
3276:Tuscarora Creek (West Virginia)
3057:South Fork Little Cacapon River
3050:North Fork Little Cacapon River
1628:Report to Congress. 2008-11-21.
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1039:. July 14, 2022. Archived from
697:Environmental Protection Agency
1211:
1114:
1089:
1055:
1023:
958:
691:Mitigation of sewage overflows
649:conditions that lead to large
557:artillery from bombarding the
194: • coordinates
123: • coordinates
1:
1513:Anacostia Watershed Society.
1421:"DDOE: Bandalong Litter Trap"
1400:"Waste-Deep in the Big Muddy"
1223:response.restoration.noaa.gov
1167:Environmental Health Insights
951:
946:Whitney Young Memorial Bridge
775:five cent tax on plastic bags
89:Physical characteristics
1579:"The Boathouse - CUA Rowing"
1071:Maryland Historical Magazine
881:
564:
486:
233: • elevation
7:
4233:South Fork Shenandoah River
4212:North Fork Shenandoah River
1658:Anacostia Watershed Society
1522:Anacostia Watershed Society
1020:, Retrieved August 15, 2011
892:
821:Bladensburg Waterfront Park
731:Bandalong Litter Trap, 2019
271: • location
178: • location
107: • location
10:
4450:
4429:Rivers of Washington, D.C.
4109:South Branch Potomac River
3994:North Branch Potomac River
3334:Tuscarora Creek (Maryland)
3232:Little Conococheague Creek
3033:South Branch Potomac River
3026:North Branch Potomac River
1272:February 27, 2008, at the
1062:Marye, William B. (1938).
941:List of rivers of Maryland
885:
852:Kenilworth Aquatic Gardens
541:Anacostia River 1936 flood
502:
396:, where it joins with the
281: • average
245:8.4 mi (13.5 km)
4281:
4270:
4207:
4194:
4115:
4102:
4000:
3987:
3604:
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3329:Catoctin Creek (Maryland)
3324:Catoctin Creek (Virginia)
3302:
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3007:
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2833:
2737:
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1718:
840:Anacostia Riverwalk Trail
705:reducing stormwater flows
582:This section needs to be
561:, which abuts the river.
532:Chesapeake and Ohio Canal
471:of these sources include
442:
322:
310:
302:
297:
293:
279:
269:
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257:
249:
241:
237:−3 ft (−0.91 m)
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176:
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121:
105:
97:
93:
88:
74:
64:
59:
47:
28:
23:
1101:Barracks Row Main Street
931:John Philip Sousa Bridge
860:Maine Avenue Fish Market
324: • right
862:, and other locations.
635:fecal coliform bacteria
549:, an extensive line of
312: • left
4336:Jennings Randolph Lake
4311:Breckenridge Reservoir
3955:Popes Creek (Virginia)
3915:Popes Creek (Maryland)
3176:Little Tonoloway Creek
2219:Conococheague (Little)
1559:"Boating Information."
1377:"Clean Rivers Project"
878:
870:
829:University of Maryland
816:
808:
799:Recreational amenities
732:
622:
615:Eleventh Street Bridge
542:
465:Cottage City, Maryland
386:Prince George's County
4371:Stony River Reservoir
3478:Little Monocacy River
3319:Little Catoctin Creek
1653:Anacostia Riverkeeper
1641:Retrieved 2009-09-18.
1568:Retrieved 2012-12-03.
876:
868:
814:
806:
730:
608:
540:
524:Washington City Canal
216:38.85361°N 77.02028°W
145:38.94250°N 76.94389°W
4331:Georgetown Reservoir
4326:Dalecarlia Reservoir
4276:Lakes and reservoirs
3930:Upper Machodoc Creek
3784:Little Hunting Creek
3507:Broad Run (Maryland)
3497:Broad Run (Virginia)
3044:Little Cacapon River
2995:subsubsubtributaries
2955:District of Columbia
2699:Tuscarora (Monocacy)
2109:Bear (Sideling Hill)
907:United States portal
617:(in center) and the
611:Washington Navy Yard
559:Washington Navy Yard
3598:Tidal Potomac River
3579:Little Falls Branch
3525:Little Seneca Creek
3296:Lower Potomac River
3237:Conococheague Creek
3070:Sideling Hill Creek
3014:Upper Potomac River
2988:(subsubtributaries)
2704:Tuscarora (Potomac)
2404:Little Falls Branch
2164:Broad (Susquehanna)
2114:Bear (Youghiogheny)
1834:Blackwater (Little)
1814:Annemessex (Little)
1478:The Washington Post
1404:The Washington Post
1179:2015EnvHI...9S9594M
1036:The Washington Post
915:11th Street Bridges
792:The Washington Post
382:Mid Atlantic region
298:Basin features
221:38.85361; -77.02028
212: /
150:38.94250; -76.94389
141: /
4434:Rivers of Maryland
4351:McMillan Reservoir
4346:Little Seneca Lake
4301:Lake Bernard Frank
4058:Little Wills Creek
3910:Port Tobacco River
3673:Washington Channel
3541:Great Seneca Creek
2709:Tuscarora (Little)
2369:Indian (Anacostia)
2044:Wicomico (Potomac)
1713:Waters of Maryland
1633:"Anacostia River."
1564:2016-07-30 at the
1251:2008-02-27 at the
1187:10.4137/EHI.S19594
1173:(Suppl 2): 19–27.
1143:2009-12-07 at the
1016:2012-03-29 at the
879:
871:
848:National Arboretum
817:
809:
795:reported in 2019.
733:
641:; it also impairs
623:
547:American Civil War
543:
508:Captain John Smith
398:Washington Channel
380:is a river in the
4398:
4397:
4394:
4393:
4366:Sleepy Creek Lake
4266:
4265:
4190:
4189:
4098:
4097:
3983:
3982:
3876:Chopawamsic Creek
3587:
3586:
3421:Big Hunting Creek
3406:Little Pipe Creek
3390:Double Pipe Creek
3285:
3284:
3095:Capon Springs Run
3065:Fifteenmile Creek
2884:
2883:
2780:Jennings Randolph
2374:Indian (Patuxent)
2209:Collington Branch
2199:Catoctin (Little)
1939:Monocacy (Little)
1869:Choptank (Little)
777:in the District.
711:PCB contamination
603:
602:
497:Montgomery County
334:
333:
4441:
4356:Mount Storm Lake
4316:Brushy Fork Lake
4272:
4271:
4257:
4250:
4241:
4227:
4220:
4201:Shenandoah River
4196:
4195:
4156:
4142:
4135:
4128:
4104:
4103:
4090:Green Spring Run
4079:
4060:
4053:
3989:
3988:
3925:Piccowaxen Creek
3899:
3861:Chicamuxen Creek
3856:Mattawoman Creek
3840:
3833:
3826:
3802:
3779:Piscataway Creek
3758:
3732:
3725:
3723:Northeast Branch
3716:
3709:
3707:Northwest Branch
3702:
3695:
3688:
3658:Boundary Channel
3652:
3593:
3592:
3574:Cabin John Creek
3543:
3536:
3527:
3520:
3518:Dry Seneca Creek
3491:
3472:
3465:
3458:
3451:
3444:
3437:
3430:
3423:
3416:
3409:
3400:
3386:
3377:
3370:
3363:
3356:
3349:
3313:Shenandoah River
3291:
3290:
3278:
3271:
3264:
3257:
3245:
3228:
3221:
3214:
3192:
3178:
3154:
3150:Bearwallow Creek
3143:
3134:
3125:
3118:
3111:
3104:
3097:
3090:
3083:
3059:
3052:
3009:
3008:
2998:
2989:
2984:
2930:Cities and towns
2911:
2904:
2897:
2888:
2887:
2674:Town (Tred Avon)
2624:Soapstone Branch
2604:Seneca (Potomac)
2464:Minnehaha Branch
2364:Hunting (Little)
2154:Broad (Choptank)
2149:Bread and Cheese
1914:Magothy (Little)
1809:Annemessex (Big)
1707:
1700:
1693:
1684:
1683:
1616:
1615:
1613:
1611:
1602:. Archived from
1596:
1590:
1589:
1587:
1585:
1575:
1569:
1555:
1549:
1548:
1532:
1526:
1525:
1519:
1510:
1504:
1503:
1491:
1482:
1481:
1469:
1458:
1457:
1455:
1453:
1447:
1438:
1432:
1431:
1429:
1427:
1417:
1411:
1407:
1395:
1389:
1388:
1386:
1384:
1373:
1367:
1366:
1364:
1362:
1351:
1345:
1344:
1328:
1322:
1321:
1319:
1311:
1305:
1304:
1297:
1291:
1282:
1276:
1261:
1255:
1240:
1234:
1233:
1231:
1229:
1215:
1209:
1208:
1198:
1158:
1147:
1135:
1118:
1112:
1111:
1109:
1107:
1093:
1087:
1086:
1084:
1082:
1068:
1059:
1053:
1052:
1050:
1048:
1043:on July 14, 2022
1027:
1021:
1011:The National Map
1007:
1001:
1000:
998:
996:
985:WATERS GeoViewer
973:
967:
962:
909:
904:
903:
902:
598:
595:
589:
577:
576:
569:
461:Northeast Branch
457:Northwest Branch
414:Native Americans
394:Washington, D.C.
379:
378:
375:
374:
371:
368:
365:
362:
359:
356:
353:
350:
347:
329:Northwest Branch
325:
317:Northeast Branch
313:
282:
272:
227:
226:
224:
223:
222:
217:
213:
210:
209:
208:
205:
156:
155:
153:
152:
151:
146:
142:
139:
138:
137:
134:
124:
108:
83:Washington, D.C.
52:
41:Washington, D.C.
33:
21:
20:
4449:
4448:
4444:
4443:
4442:
4440:
4439:
4438:
4414:Anacostia River
4404:
4403:
4401:
4399:
4390:
4277:
4262:
4253:
4244:
4237:
4223:
4216:
4203:
4186:
4152:
4138:
4131:
4124:
4111:
4094:
4075:
4071:Patterson Creek
4056:
4049:
3996:
3979:
3965:Yeocomico River
3960:St. Marys River
3895:
3836:
3829:
3822:
3798:
3754:
3728:
3721:
3712:
3705:
3698:
3691:
3684:
3679:Anacostia River
3648:
3600:
3583:
3539:
3530:
3523:
3516:
3487:
3468:
3463:Ballenger Creek
3461:
3454:
3447:
3442:Linganore Creek
3440:
3433:
3428:Tuscarora Creek
3426:
3419:
3412:
3403:
3394:
3380:
3373:
3366:
3359:
3352:
3345:
3298:
3281:
3274:
3267:
3260:
3253:
3241:
3224:
3217:
3210:
3188:
3174:
3170:Tonoloway Creek
3165:Warm Spring Run
3146:
3137:
3131:Grassy Lick Run
3128:
3121:
3114:
3107:
3100:
3093:
3086:
3079:
3055:
3048:
3016:
3003:
2992:
2987:
2982:
2921:
2915:
2885:
2880:
2829:
2733:
2664:Town (Patuxent)
2599:Seneca (Middle)
2564:Rockburn Branch
2539:Plumtree Branch
2159:Broad (Potomac)
2104:Bear (Patapsco)
2076:
2074:
2068:
1790:
1714:
1711:
1649:
1644:
1620:
1619:
1609:
1607:
1606:on June 9, 2016
1598:
1597:
1593:
1583:
1581:
1577:
1576:
1572:
1566:Wayback Machine
1556:
1552:
1533:
1529:
1517:
1511:
1507:
1492:
1485:
1470:
1461:
1451:
1449:
1445:
1439:
1435:
1425:
1423:
1419:
1418:
1414:
1409:Interactive map
1396:
1392:
1382:
1380:
1375:
1374:
1370:
1360:
1358:
1353:
1352:
1348:
1329:
1325:
1317:
1313:
1312:
1308:
1299:
1298:
1294:
1283:
1279:
1274:Wayback Machine
1262:
1258:
1253:Wayback Machine
1241:
1237:
1227:
1225:
1217:
1216:
1212:
1159:
1150:
1145:Wayback Machine
1126:. 53–56: 1–27.
1119:
1115:
1105:
1103:
1095:
1094:
1090:
1080:
1078:
1066:
1060:
1056:
1046:
1044:
1029:
1028:
1024:
1018:Wayback Machine
1008:
1004:
994:
992:
974:
970:
963:
959:
954:
905:
900:
898:
895:
890:
884:
801:
745:
725:
713:
693:
645:and can create
599:
593:
590:
587:
578:
574:
567:
517:St. James Creek
505:
489:
445:
344:
340:
338:Anacostia River
323:
311:
280:
270:
234:
220:
218:
214:
211:
206:
203:
201:
199:
198:
195:
179:
149:
147:
143:
140:
135:
132:
130:
128:
127:
122:
106:
55:
43:
24:Anacostia River
17:
12:
11:
5:
4447:
4437:
4436:
4431:
4426:
4421:
4416:
4396:
4395:
4392:
4391:
4389:
4388:
4383:
4378:
4373:
4368:
4363:
4358:
4353:
4348:
4343:
4338:
4333:
4328:
4323:
4318:
4313:
4308:
4303:
4298:
4296:Lake Artemesia
4293:
4288:
4282:
4279:
4278:
4268:
4267:
4264:
4263:
4261:
4260:
4259:
4258:
4251:
4242:
4230:
4229:
4228:
4221:
4208:
4205:
4204:
4192:
4191:
4188:
4187:
4185:
4184:
4179:
4174:
4169:
4164:
4159:
4158:
4157:
4145:
4144:
4143:
4136:
4129:
4116:
4113:
4112:
4100:
4099:
4096:
4095:
4093:
4092:
4087:
4082:
4081:
4080:
4068:
4063:
4062:
4061:
4054:
4042:
4037:
4032:
4027:
4022:
4017:
4012:
4007:
4001:
3998:
3997:
3985:
3984:
3981:
3980:
3978:
3977:
3972:
3967:
3962:
3957:
3952:
3947:
3942:
3940:Wicomico River
3937:
3932:
3927:
3922:
3917:
3912:
3907:
3905:Nanjemoy Creek
3902:
3901:
3900:
3897:Accokeek Creek
3888:
3883:
3878:
3873:
3868:
3866:Quantico Creek
3863:
3858:
3853:
3848:
3843:
3842:
3841:
3834:
3827:
3818:Occoquan River
3815:
3813:Pomonkey Creek
3810:
3805:
3804:
3803:
3794:Accotink Creek
3791:
3786:
3781:
3776:
3771:
3766:
3761:
3760:
3759:
3747:
3742:
3737:
3736:
3735:
3734:
3733:
3719:
3718:
3717:
3703:
3696:
3689:
3675:
3670:
3665:
3660:
3655:
3654:
3653:
3641:
3639:Foundry Branch
3636:
3631:
3626:
3621:
3616:
3611:
3605:
3602:
3601:
3589:
3588:
3585:
3584:
3582:
3581:
3576:
3571:
3566:
3561:
3556:
3551:
3546:
3545:
3544:
3537:
3528:
3521:
3509:
3504:
3499:
3494:
3493:
3492:
3480:
3475:
3474:
3473:
3466:
3459:
3452:
3445:
3438:
3431:
3424:
3417:
3410:
3401:
3397:Big Pipe Creek
3392:
3387:
3378:
3371:
3364:
3357:
3350:
3340:Monocacy River
3336:
3331:
3326:
3321:
3316:
3309:
3307:Antietam Creek
3303:
3300:
3299:
3287:
3286:
3283:
3282:
3280:
3279:
3272:
3265:
3258:
3251:
3246:
3239:
3234:
3229:
3226:Tilhance Creek
3222:
3215:
3208:
3203:
3198:
3193:
3186:
3181:
3180:
3179:
3167:
3162:
3157:
3156:
3155:
3144:
3140:Tearcoat Creek
3135:
3126:
3119:
3112:
3105:
3098:
3091:
3084:
3072:
3067:
3062:
3061:
3060:
3053:
3041:
3036:
3029:
3021:
3018:
3017:
3005:
3004:
3002:
3001:
3000:
2999:
2990:
2985:
2983:subtributaries
2977:
2972:
2967:
2962:
2957:
2952:
2947:
2942:
2937:
2932:
2926:
2923:
2922:
2914:
2913:
2906:
2899:
2891:
2882:
2881:
2879:
2878:
2873:
2868:
2863:
2858:
2853:
2848:
2843:
2837:
2835:
2831:
2830:
2828:
2827:
2822:
2817:
2815:Schumaker Pond
2812:
2807:
2802:
2797:
2792:
2787:
2782:
2777:
2772:
2767:
2762:
2757:
2752:
2747:
2741:
2739:
2735:
2734:
2732:
2731:
2726:
2721:
2716:
2711:
2706:
2701:
2696:
2691:
2686:
2681:
2676:
2671:
2669:Town (Potomac)
2666:
2661:
2656:
2651:
2646:
2641:
2636:
2631:
2626:
2621:
2616:
2611:
2606:
2601:
2596:
2591:
2586:
2581:
2576:
2571:
2566:
2561:
2556:
2554:Rock (Potomac)
2551:
2546:
2541:
2536:
2531:
2526:
2521:
2516:
2511:
2506:
2501:
2496:
2491:
2486:
2481:
2476:
2471:
2466:
2461:
2456:
2451:
2446:
2441:
2436:
2431:
2426:
2421:
2416:
2411:
2406:
2401:
2396:
2391:
2386:
2381:
2376:
2371:
2366:
2361:
2356:
2351:
2346:
2341:
2336:
2331:
2326:
2321:
2316:
2311:
2306:
2301:
2296:
2291:
2286:
2281:
2276:
2271:
2266:
2261:
2256:
2251:
2246:
2241:
2236:
2231:
2226:
2221:
2216:
2211:
2206:
2201:
2196:
2191:
2186:
2181:
2176:
2171:
2166:
2161:
2156:
2151:
2146:
2141:
2136:
2131:
2126:
2121:
2116:
2111:
2106:
2101:
2096:
2091:
2086:
2080:
2078:
2070:
2069:
2067:
2066:
2061:
2056:
2051:
2046:
2041:
2036:
2031:
2026:
2021:
2016:
2011:
2006:
2001:
1996:
1991:
1986:
1981:
1976:
1971:
1966:
1961:
1956:
1951:
1946:
1941:
1936:
1931:
1926:
1921:
1916:
1911:
1906:
1901:
1896:
1891:
1886:
1881:
1876:
1871:
1866:
1861:
1856:
1851:
1846:
1841:
1836:
1831:
1826:
1821:
1816:
1811:
1806:
1800:
1798:
1792:
1791:
1789:
1788:
1783:
1778:
1773:
1768:
1763:
1758:
1753:
1748:
1743:
1738:
1733:
1728:
1722:
1720:
1719:Bays/estuaries
1716:
1715:
1710:
1709:
1702:
1695:
1687:
1681:
1680:
1675:
1670:
1665:
1660:
1655:
1648:
1647:External links
1645:
1643:
1642:
1629:
1621:
1618:
1617:
1591:
1570:
1550:
1527:
1505:
1483:
1459:
1433:
1412:
1390:
1368:
1346:
1323:
1306:
1292:
1290:Press Release.
1277:
1256:
1235:
1210:
1148:
1113:
1088:
1054:
1022:
1002:
968:
956:
955:
953:
950:
949:
948:
943:
938:
933:
928:
923:
917:
911:
910:
894:
891:
886:Main article:
883:
880:
856:Nationals Park
800:
797:
744:
743:Mussel project
741:
724:
723:Litter control
721:
712:
709:
692:
689:
678:combined sewer
631:combined sewer
601:
600:
581:
579:
572:
566:
563:
504:
501:
488:
485:
463:just north of
444:
441:
332:
331:
326:
320:
319:
314:
308:
307:
304:
300:
299:
295:
294:
291:
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125:
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109:
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85:
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66:
62:
61:
57:
56:
53:
45:
44:
34:
26:
25:
15:
9:
6:
4:
3:
2:
4446:
4435:
4432:
4430:
4427:
4425:
4422:
4420:
4417:
4415:
4412:
4411:
4409:
4402:
4387:
4384:
4382:
4379:
4377:
4374:
4372:
4369:
4367:
4364:
4362:
4361:Lake Needwood
4359:
4357:
4354:
4352:
4349:
4347:
4344:
4342:
4339:
4337:
4334:
4332:
4329:
4327:
4324:
4322:
4319:
4317:
4314:
4312:
4309:
4307:
4306:Lake Braddock
4304:
4302:
4299:
4297:
4294:
4292:
4289:
4287:
4286:Lake Accotink
4284:
4283:
4280:
4273:
4269:
4256:
4252:
4248:
4243:
4240:
4236:
4235:
4234:
4231:
4226:
4222:
4219:
4215:
4214:
4213:
4210:
4209:
4206:
4202:
4197:
4193:
4183:
4182:Buffalo Creek
4180:
4178:
4175:
4173:
4170:
4168:
4165:
4163:
4160:
4155:
4151:
4150:
4149:
4146:
4141:
4137:
4134:
4130:
4127:
4123:
4122:
4121:
4118:
4117:
4114:
4110:
4105:
4101:
4091:
4088:
4086:
4083:
4078:
4074:
4073:
4072:
4069:
4067:
4064:
4059:
4055:
4052:
4048:
4047:
4046:
4043:
4041:
4038:
4036:
4035:Limestone Run
4033:
4031:
4028:
4026:
4023:
4021:
4020:Georges Creek
4018:
4016:
4013:
4011:
4008:
4006:
4003:
4002:
3999:
3995:
3990:
3986:
3976:
3973:
3971:
3968:
3966:
3963:
3961:
3958:
3956:
3953:
3951:
3948:
3946:
3943:
3941:
3938:
3936:
3935:Cuckold Creek
3933:
3931:
3928:
3926:
3923:
3921:
3918:
3916:
3913:
3911:
3908:
3906:
3903:
3898:
3894:
3893:
3892:
3891:Potomac Creek
3889:
3887:
3884:
3882:
3879:
3877:
3874:
3872:
3869:
3867:
3864:
3862:
3859:
3857:
3854:
3852:
3851:Powells Creek
3849:
3847:
3846:Neabsco Creek
3844:
3839:
3835:
3832:
3828:
3825:
3821:
3820:
3819:
3816:
3814:
3811:
3809:
3806:
3801:
3797:
3796:
3795:
3792:
3790:
3787:
3785:
3782:
3780:
3777:
3775:
3772:
3770:
3767:
3765:
3762:
3757:
3753:
3752:
3751:
3750:Hunting Creek
3748:
3746:
3743:
3741:
3740:Four Mile Run
3738:
3731:
3727:
3726:
3724:
3720:
3715:
3711:
3710:
3708:
3704:
3701:
3697:
3694:
3690:
3687:
3683:
3682:
3681:
3680:
3676:
3674:
3671:
3669:
3666:
3664:
3661:
3659:
3656:
3651:
3647:
3646:
3645:
3642:
3640:
3637:
3635:
3632:
3630:
3627:
3625:
3624:Maddox Branch
3622:
3620:
3619:Donaldson Run
3617:
3615:
3612:
3610:
3607:
3606:
3603:
3599:
3594:
3590:
3580:
3577:
3575:
3572:
3570:
3567:
3565:
3562:
3560:
3559:Difficult Run
3557:
3555:
3552:
3550:
3547:
3542:
3538:
3534:
3533:Tenmile Creek
3529:
3526:
3522:
3519:
3515:
3514:
3513:
3510:
3508:
3505:
3503:
3502:Sugarland Run
3500:
3498:
3495:
3490:
3486:
3485:
3484:
3481:
3479:
3476:
3471:
3470:Bennett Creek
3467:
3464:
3460:
3457:
3453:
3450:
3446:
3443:
3439:
3436:
3435:Carroll Creek
3432:
3429:
3425:
3422:
3418:
3415:
3411:
3407:
3402:
3398:
3393:
3391:
3388:
3384:
3379:
3376:
3372:
3369:
3365:
3362:
3361:Alloway Creek
3358:
3355:
3351:
3348:
3344:
3343:
3342:
3341:
3337:
3335:
3332:
3330:
3327:
3325:
3322:
3320:
3317:
3315:
3314:
3310:
3308:
3305:
3304:
3301:
3297:
3292:
3288:
3277:
3273:
3270:
3266:
3263:
3259:
3256:
3252:
3250:
3249:Opequon Creek
3247:
3244:
3240:
3238:
3235:
3233:
3230:
3227:
3223:
3220:
3216:
3213:
3209:
3207:
3204:
3202:
3199:
3197:
3196:Licking Creek
3194:
3191:
3190:Meadow Branch
3187:
3185:
3182:
3177:
3173:
3172:
3171:
3168:
3166:
3163:
3161:
3160:Sir Johns Run
3158:
3152:
3151:
3145:
3141:
3136:
3132:
3127:
3124:
3120:
3117:
3113:
3110:
3106:
3103:
3099:
3096:
3092:
3089:
3085:
3082:
3078:
3077:
3076:
3075:Cacapon River
3073:
3071:
3068:
3066:
3063:
3058:
3054:
3051:
3047:
3046:
3045:
3042:
3040:
3037:
3035:
3034:
3030:
3028:
3027:
3023:
3022:
3019:
3015:
3010:
3006:
2996:
2991:
2986:
2981:
2980:
2978:
2976:
2975:West Virginia
2973:
2971:
2968:
2966:
2963:
2961:
2958:
2956:
2953:
2951:
2950:Variant names
2948:
2946:
2943:
2941:
2938:
2936:
2933:
2931:
2928:
2927:
2924:
2919:
2918:Potomac River
2912:
2907:
2905:
2900:
2898:
2893:
2892:
2889:
2877:
2874:
2872:
2869:
2867:
2864:
2862:
2859:
2857:
2854:
2852:
2849:
2847:
2844:
2842:
2839:
2838:
2836:
2832:
2826:
2823:
2821:
2820:Woodward Pond
2818:
2816:
2813:
2811:
2808:
2806:
2803:
2801:
2798:
2796:
2793:
2791:
2790:Little Seneca
2788:
2786:
2783:
2781:
2778:
2776:
2775:Bernard Frank
2773:
2771:
2768:
2766:
2763:
2761:
2758:
2756:
2753:
2751:
2748:
2746:
2743:
2742:
2740:
2736:
2730:
2727:
2725:
2722:
2720:
2717:
2715:
2712:
2710:
2707:
2705:
2702:
2700:
2697:
2695:
2692:
2690:
2687:
2685:
2682:
2680:
2677:
2675:
2672:
2670:
2667:
2665:
2662:
2660:
2657:
2655:
2652:
2650:
2647:
2645:
2644:Tenmile Creek
2642:
2640:
2637:
2635:
2632:
2630:
2627:
2625:
2622:
2620:
2617:
2615:
2612:
2610:
2609:Sideling Hill
2607:
2605:
2602:
2600:
2597:
2595:
2592:
2590:
2587:
2585:
2582:
2580:
2577:
2575:
2572:
2570:
2567:
2565:
2562:
2560:
2557:
2555:
2552:
2550:
2547:
2545:
2542:
2540:
2537:
2535:
2532:
2530:
2527:
2525:
2522:
2520:
2517:
2515:
2512:
2510:
2507:
2505:
2502:
2500:
2497:
2495:
2492:
2490:
2487:
2485:
2482:
2480:
2477:
2475:
2472:
2470:
2467:
2465:
2462:
2460:
2457:
2455:
2452:
2450:
2447:
2445:
2442:
2440:
2437:
2435:
2432:
2430:
2427:
2425:
2422:
2420:
2417:
2415:
2414:Little Seneca
2412:
2410:
2407:
2405:
2402:
2400:
2397:
2395:
2392:
2390:
2387:
2385:
2382:
2380:
2377:
2375:
2372:
2370:
2367:
2365:
2362:
2360:
2357:
2355:
2352:
2350:
2347:
2345:
2342:
2340:
2337:
2335:
2332:
2330:
2327:
2325:
2322:
2320:
2317:
2315:
2312:
2310:
2307:
2305:
2302:
2300:
2297:
2295:
2292:
2290:
2287:
2285:
2282:
2280:
2277:
2275:
2272:
2270:
2267:
2265:
2262:
2260:
2257:
2255:
2252:
2250:
2247:
2245:
2242:
2240:
2237:
2235:
2232:
2230:
2227:
2225:
2222:
2220:
2217:
2215:
2214:Conococheague
2212:
2210:
2207:
2205:
2202:
2200:
2197:
2195:
2192:
2190:
2187:
2185:
2182:
2180:
2177:
2175:
2172:
2170:
2167:
2165:
2162:
2160:
2157:
2155:
2152:
2150:
2147:
2145:
2144:Bonnie Branch
2142:
2140:
2137:
2135:
2132:
2130:
2127:
2125:
2122:
2120:
2117:
2115:
2112:
2110:
2107:
2105:
2102:
2100:
2097:
2095:
2092:
2090:
2087:
2085:
2082:
2081:
2079:
2071:
2065:
2062:
2060:
2057:
2055:
2052:
2050:
2047:
2045:
2042:
2040:
2037:
2035:
2032:
2030:
2027:
2025:
2022:
2020:
2017:
2015:
2012:
2010:
2007:
2005:
2002:
2000:
1997:
1995:
1992:
1990:
1987:
1985:
1982:
1980:
1977:
1975:
1972:
1970:
1967:
1965:
1962:
1960:
1957:
1955:
1952:
1950:
1947:
1945:
1942:
1940:
1937:
1935:
1932:
1930:
1927:
1925:
1922:
1920:
1917:
1915:
1912:
1910:
1907:
1905:
1902:
1900:
1897:
1895:
1892:
1890:
1887:
1885:
1882:
1880:
1877:
1875:
1872:
1870:
1867:
1865:
1862:
1860:
1859:Chicamacomico
1857:
1855:
1852:
1850:
1847:
1845:
1842:
1840:
1837:
1835:
1832:
1830:
1827:
1825:
1822:
1820:
1817:
1815:
1812:
1810:
1807:
1805:
1802:
1801:
1799:
1797:
1793:
1787:
1784:
1782:
1779:
1777:
1774:
1772:
1769:
1767:
1764:
1762:
1761:Isle of Wight
1759:
1757:
1754:
1752:
1749:
1747:
1744:
1742:
1739:
1737:
1734:
1732:
1729:
1727:
1724:
1723:
1721:
1717:
1708:
1703:
1701:
1696:
1694:
1689:
1688:
1685:
1679:
1676:
1674:
1671:
1669:
1666:
1664:
1661:
1659:
1656:
1654:
1651:
1650:
1640:
1638:
1634:
1630:
1627:
1623:
1622:
1605:
1601:
1595:
1580:
1574:
1567:
1563:
1560:
1554:
1546:
1542:
1538:
1531:
1523:
1516:
1509:
1501:
1497:
1490:
1488:
1479:
1475:
1468:
1466:
1464:
1444:
1437:
1422:
1416:
1410:
1405:
1401:
1394:
1378:
1372:
1361:September 21,
1356:
1350:
1342:
1338:
1334:
1327:
1316:
1310:
1302:
1296:
1289:
1288:
1281:
1275:
1271:
1268:
1267:
1260:
1254:
1250:
1247:
1246:
1239:
1224:
1220:
1214:
1206:
1202:
1197:
1192:
1188:
1184:
1180:
1176:
1172:
1168:
1164:
1157:
1155:
1153:
1146:
1142:
1139:
1133:
1129:
1125:
1117:
1102:
1098:
1092:
1076:
1072:
1065:
1058:
1042:
1038:
1037:
1032:
1026:
1019:
1015:
1012:
1006:
990:
986:
982:
978:
972:
966:
961:
957:
947:
944:
942:
939:
937:
934:
932:
929:
927:
924:
921:
918:
916:
913:
912:
908:
897:
889:
875:
867:
863:
861:
857:
853:
849:
845:
841:
836:
834:
830:
826:
822:
813:
805:
796:
794:
793:
786:
782:
778:
776:
772:
766:
764:
760:
758:
757:microplastics
754:
750:
740:
738:
729:
720:
718:
708:
706:
700:
698:
688:
686:
681:
679:
675:
671:
667:
662:
659:
654:
652:
648:
644:
643:water quality
640:
636:
632:
628:
620:
616:
612:
607:
597:
585:
580:
571:
570:
562:
560:
556:
552:
548:
539:
535:
533:
529:
525:
520:
518:
514:
509:
500:
498:
494:
484:
482:
478:
474:
470:
466:
462:
458:
454:
450:
440:
438:
434:
430:
426:
422:
417:
415:
411:
407:
406:Buzzard Point
403:
402:Potomac River
399:
395:
391:
387:
383:
377:
339:
330:
327:
321:
318:
315:
309:
305:
301:
296:
292:
288:
284:
278:
274:
268:
264:
260:
256:
252:
248:
244:
240:
236:
230:
225:
197:
191:
188:
184:
181:
175:
172:
171:Potomac River
169:
167:
163:
159:
154:
126:
120:
117:
113:
110:
104:
100:
96:
92:
87:
84:
80:
77:
73:
70:
69:United States
67:
63:
58:
51:
46:
42:
38:
32:
27:
22:
19:
4400:
4341:Kingman Lake
4247:Middle River
4162:Lunice Creek
4154:Kettle Creek
4140:Seneca Creek
4066:Evitts Creek
4015:Savage River
3950:Mattox Creek
3945:Monroe Creek
3871:Little Creek
3808:Pohick Creek
3769:Henson Creek
3730:Paint Branch
3693:Watts Branch
3678:
3677:
3650:Piney Branch
3554:Watts Branch
3549:Muddy Branch
3512:Seneca Creek
3489:Little River
3449:Israel Creek
3383:Middle Creek
3338:
3311:
3269:Middle Creek
3255:Abrams Creek
3219:Isaacs Creek
3184:Sleepy Creek
3148:
3031:
3024:
2994:
2965:Pennsylvania
2825:Youghiogheny
2785:Kittamaqundi
2755:Buckel's Bog
2714:Watts Branch
2519:Paint Branch
2474:Muddy Branch
2399:Little Falls
2334:Gwynns Falls
2324:Green Branch
2319:Great Seneca
2094:Arundel Cove
2064:Youghiogheny
2024:Transquaking
1974:Port Tobacco
1803:
1736:Chincoteague
1635:
1608:. Retrieved
1604:the original
1594:
1582:. Retrieved
1573:
1553:
1540:
1530:
1521:
1508:
1499:
1477:
1450:. Retrieved
1436:
1424:. Retrieved
1415:
1403:
1393:
1381:. Retrieved
1371:
1359:. Retrieved
1349:
1336:
1326:
1309:
1295:
1286:
1280:
1265:
1259:
1244:
1238:
1226:. Retrieved
1222:
1213:
1170:
1166:
1123:
1116:
1104:. Retrieved
1100:
1091:
1079:. Retrieved
1077:(2): 145–148
1074:
1070:
1057:
1045:. Retrieved
1041:the original
1034:
1025:
1005:
993:. Retrieved
984:
971:
960:
837:
818:
790:
787:
783:
779:
767:
761:
749:urban runoff
746:
737:Adrian Fenty
734:
714:
701:
694:
682:
670:urban runoff
663:
655:
624:
621:near the top
591:
583:
544:
521:
506:
490:
481:Watts Branch
477:Paint Branch
446:
418:
337:
335:
286:
18:
4386:Warden Lake
4376:Tidal Basin
4255:South River
4239:North River
4225:Smith Creek
4218:Cedar Creek
4126:Laurel Fork
4051:Brush Creek
4045:Wills Creek
4040:Warrior Run
4010:Abram Creek
4005:Stony River
3920:Gambo Creek
3886:Aquia Creek
3800:Daniels Run
3789:Dogue Creek
3764:Broad Creek
3756:Cameron Run
3714:Sligo Creek
3686:Pope Branch
3663:Tiber Creek
3614:Gulf Branch
3483:Goose Creek
3414:Owens Creek
3368:Piney Creek
3354:Marsh Creek
3212:Hogue Creek
3123:North River
3116:Mill Branch
3109:Edwards Run
3102:Dillons Run
2945:Tributaries
2876:Triadelphia
2871:Rocky Gorge
2810:Parker Pond
2800:Quarry Lake
2729:Winters Run
2719:Western Run
2579:St. Leonard
2509:Otter Point
2459:Mill Branch
2409:Little Pipe
2354:Herring Run
2349:Herbert Run
2304:Frog Mortar
2289:Fifteenmile
2259:Double Pipe
2129:Big Hunting
2019:Susquehanna
1904:Jones Falls
1500:Bay Journal
1136:Now called
1106:October 12,
1081:October 12,
844:Tidal Basin
555:Confederate
545:During the
528:Tiber Creek
473:Sligo Creek
469:Tributaries
425:development
410:Nacotchtank
303:Tributaries
219: /
148: /
112:Bladensburg
4408:Categories
4381:Trout Pond
4321:Burke Lake
4172:Mill Creek
4133:Mill Creek
4077:Mill Creek
4025:Laurel Run
3975:Hull Creek
3970:Coan River
3881:Tank Creek
3774:Swan Creek
3745:Oxon Creek
3700:Hickey Run
3644:Rock Creek
3609:Pimmit Run
3456:Bush Creek
3375:Toms Creek
3347:Rock Creek
3262:Mill Creek
3243:Back Creek
3206:Back Creek
3201:Cherry Run
3081:Lost River
3039:Town Creek
2856:Loch Raven
2841:Dalecarlia
2834:Reservoirs
2765:Deep Creek
2760:Centennial
2745:Allen Pond
2679:Towson Run
2649:Thoms Cove
2569:Roland Run
2534:Piscataway
2484:Nassawango
2469:Moores Run
2444:Mattawoman
2439:Marshyhope
2384:Laurel Run
2299:Flintstone
2279:Edge Creek
2264:Dry Seneca
2254:Dorsey Run
2204:Chicamuxen
2184:Cabin John
1989:St. Martin
1954:North East
1829:Blackwater
1781:Sinepuxent
1741:Curtis Bay
1731:Chesapeake
952:References
674:stormwater
651:fish kills
637:and other
513:Oxon Creek
453:confluence
250:Basin size
207:77°01′13″W
204:38°51′13″N
183:Washington
136:76°56′38″W
133:38°56′33″N
4291:Lake Anne
4030:New Creek
3838:Cedar Run
3831:Broad Run
3668:Rocky Run
3634:Spout Run
3629:Windy Run
3088:Trout Run
2866:Prettyboy
2861:Piney Run
2750:Artemesia
2659:Tonoloway
2634:Stony Run
2614:Slaughter
2584:Saltpeter
2549:Principio
2394:Linganore
2224:Conowingo
2169:Broad Run
2119:Beaverdam
2099:Ballenger
2029:Tred Avon
1999:Sassafras
1994:St. Marys
1944:Nanticoke
1894:Gunpowder
1874:Christina
1849:Casselman
1804:Anacostia
1726:Assawoman
1097:"History"
920:Anacostia
882:Crossings
639:pathogens
594:June 2017
565:Pollution
493:watershed
487:Watershed
449:main stem
437:watershed
421:pollution
262:Discharge
4167:Mill Run
4085:Dans Run
3824:Bull Run
3569:Dead Run
3564:Rock Run
2970:Virginia
2960:Maryland
2795:Needwood
2694:Turville
2689:Tuckahoe
2559:Rock Run
2544:Pomonkey
2499:Octoraro
2479:Nanjemoy
2249:Dividing
2239:Deep Run
2194:Catoctin
2134:Big Pipe
2084:Antietam
2073:Creeks,
2059:Wye East
2049:Wicomico
1969:Pocomoke
1964:Patuxent
1959:Patapsco
1934:Monocacy
1899:Hawlings
1864:Choptank
1776:Pocomoke
1562:Archived
1545:Archived
1383:March 5,
1379:. DCWASA
1357:. DCWASA
1341:Archived
1270:Archived
1249:Archived
1205:26124665
1141:Archived
1132:40067664
1047:July 14,
1014:Archived
989:Archived
893:See also
459:and the
429:Maryland
390:Maryland
287:estimate
116:Maryland
79:Maryland
60:Location
4177:Big Run
2940:Islands
2935:Bridges
2851:Liberty
2770:Elkhorn
2639:Swanson
2594:Sellman
2524:Parsons
2449:Meekins
2389:Licking
2314:Georges
2309:Furnace
2294:Fishing
2269:Dueling
2229:Cuckold
2189:Carroll
2124:Bennett
2089:Alloway
2077:streams
2034:Warwick
1979:Potomac
1919:Manokin
1909:Magothy
1879:Corsica
1854:Chester
1839:Bohemia
1786:Tangier
1771:Newport
1766:Mallows
1756:Herring
1751:Fishing
1746:Eastern
1639:(GNIS).
1610:June 3,
1584:June 3,
1452:June 3,
1426:June 6,
1228:May 29,
1196:4476373
1175:Bibcode
995:July 8,
825:Route 1
763:Mussels
647:hypoxic
584:updated
503:History
455:of the
433:federal
65:Country
2920:system
2846:Habeeb
2805:Roland
2684:Trappe
2574:Romney
2454:Middle
2429:Marley
2379:Israel
2344:Henson
2339:Harris
2284:Evitts
2274:Dundee
2234:Curtis
2139:Bodkin
2009:Severn
2004:Savage
1924:Middle
1796:Rivers
1203:
1193:
1130:
755:, and
627:sewage
443:Course
431:, and
419:Heavy
306:
265:
242:Length
101:
98:Source
2738:Lakes
2724:Wills
2629:Stony
2619:Sligo
2529:Piney
2504:Owens
2434:Marsh
2419:Lyons
2359:Honga
2329:Greys
2174:Budds
2075:runs,
2014:South
1984:Rhode
1949:North
1929:Miles
1889:Front
1541:DCist
1518:(PDF)
1446:(PDF)
1337:DCist
1318:(PDF)
1128:JSTOR
1067:(PDF)
551:forts
392:into
275:mouth
166:Mouth
75:State
2654:Toms
2589:Sams
2514:Oxon
2424:Main
2244:Deer
2179:Bush
2039:West
1844:Bush
1824:Bird
1819:Back
1612:2016
1586:2016
1454:2016
1428:2016
1385:2018
1363:2023
1230:2020
1201:PMID
1108:2021
1083:2021
1049:2022
997:2021
838:The
819:The
753:PCBs
658:NOAA
609:The
522:The
491:The
447:The
336:The
187:D.C.
81:and
2054:Wye
1884:Elk
1191:PMC
1183:doi
717:PCB
404:at
388:in
39:in
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1151:^
1099:.
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858:,
854:,
850:,
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