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Three Sisters (District of Columbia)

The Three Sisters are three rocky islands in the Potomac River in Washington, D.C., west of the Key Bridge. A notable landmark in colonial times, the islets are less well known as the Three Sisters Islands[1] and Three Sisters Island.[2]

Bridges have been proposed for the Three Sisters several times, most recently in the 1960s, when the Three Sisters Bridge proposal led to a decade of protests and ultimately, its cancellation.

Geographical description

The Three Sisters are part of the fall line, a geologic feature which distinguishes the sedimentary coastal plain of the mid-Atlantic region of the United States from the basement rock of the inland.[3] Part of this basement rock, the Three Sisters are composed of granite.[4] Roughly 300,000 years ago,[5] Atlantic Ocean levels were much higher. At that time, the lower Potomac River was submerged beneath the Atlantic Ocean, whose shores reached the Three Sisters.[6]

The Potomac River near Washington, D.C., is usually no more than Script error: No such module "convert". deep, on average.[7] However, there is a deep channel near the Three Sisters which generally is about Script error: No such module "convert". deep, but can drop to just Script error: No such module "convert". or less during low tide or periods of little precipitation.[8][7] The rock formation generates sand bars on which grass grows, and these are often visible at low tide.[9]

Some sources claim that the Three Sisters represent the farthest navigable point on the Potomac River,[3][10] although other sources claim that navigability extends farther north to Little Falls Branch.[11]

Legends and history

Various legends are associated with the Three Sisters. One of the earliest myths involves three Algonquian sisters who crossed the river in an attempt to win the release of their brothers, who had been kidnapped by another tribe. They drowned while crossing the river, and were turned into the rocky islets.[12][13] A less commonly cited legend says three daughters of the local Native American chief were marooned on the islands by their father after rejecting the husbands he picked out for them.[14] The legend holds that the sisters cursed the spot, saying that if they could not cross the Potomac there, no one could. A strange moaning or bell-like sound is said to come from the Potomac River when the curse is about to claim another life.[15]

The first European to see the Three Sisters was Captain John Smith, who sailed up the Potomac River and saw them in 1607.[12] The islets were a landmark in colonial times,[3] and appeared on Pierre L'Enfant's first map of the area.[16]

Three Sisters Bridge

External images
16px Three Sisters Bridge

A bridge across the Potomac River, using the Three Sisters as part of the supporting piers, was first proposed by Pierre L'Enfant in 1789.[16] A bridge was again proposed at the site in 1826, but the plan was defeated after supporters of Chain Bridge (then a toll bridge) opposed it.[17] A bridge was planned again in 1857, but debate over its exact location lasted for years. The onset of the American Civil War forced the cancellation of the plan.[18]

In 1929, the Mount Vernon Memorial Parkway was renamed the George Washington Memorial Parkway by Congress, which authorized its extension to the Great Falls of the Potomac.[19] The idea for a large George Washington Memorial Parkway came from Representative Louis C. Cramton, who introduced legislation in January 1929 to construct a larger system of roads and parks.[20] In the Senate, the bill was amended by Carter Glass to include a bridge across the Potomac at the Great Falls of the Potomac.[21] Congress enacted the "Act of May 29, 1930" (46 Stat. 482) — more commonly known as the Capper-Cramton Act — to establish the George Washington Memorial Parkway. The act appropriated $13.5 million to acquire land and build a parkway on the Virginia shoreline from Mount Vernon to the Great Falls of the Potomac (excluding the city of Alexandria), and to build a parkway on the Maryland shoreline from Fort Washington, Maryland, to the Great Falls of the Potomac (excluding the District of Columbia). (This section is now known as the Clara Barton Parkway.) A bridge across the Potomac at or near the Great Falls was also included in the final bill.[22]

In 1957, Senator Clifford P. Case introduced legislation that would require the District of Columbia to build a bridge across the Three Sisters connecting D.C. and Virginia. In mid-1961, the District of Columbia Department of Transportation proposed constructing a six-lane, Script error: No such module "convert". wide bridge linking the Virginia and D.C. segments of the George Washington Memorial Parkway at the Three Sisters.[23] The bridge was designed to carry the unbuilt Interstate 266, part of the proposed Inner Loop system of beltway superhighways designed for the inner parts of the District of Columbia. Construction of the bridge would also have required that Congress fund construction of the proposed Potomac River Freeway.[24][25] Over the next 11 years, there would be several lawsuits (most of which were won by opponents of the bridge) and numerous protests — including an attempt to occupy the Three Sisters.

In 1966, Representative William Natcher, chairman of the Subcommittee on Appropriations for the District of Columbia of the House Committee on Appropriations, threatened to withhold money for the construction of the Washington Metro if the bridge were not built. (Natcher was a strong advocate of highway construction, and used his subcommittee position to win support for public works projects in his home district. It was the House Public Works Committee which had first approved the bridge.) A bitter eight-year political battle occurred, during which Natcher repeatedly deleted money for Metro from the federal budget. Repeatedly District of Columbia and United States Department of Transportation (USDOT) officials would agree to build the bridge, causing the Metro money to be restored, and then reasons for not building the bridge would be found.[26] Finally, in December 1971, Representative Robert Giaimo led a successful revolt on the House floor which restored the Metro funding over Natcher's vehement opposition. Without the threat of losing Metro money, D.C. and USDOT officials quietly deleted the bridge from their construction plans. The bridge project was declared dead by the Washington Post in May 1977.[27]

In popular culture

The islets are integral to the plot of Breena Clarke's best-selling novel River, Cross My Heart, set in the Georgetown neighborhood of Washington, D.C., in 1925.[28] A false legend about the landmark (that three nuns drowned at the Three Sisters, giving the rocks their name) is given in River, Cross My Heart, and also by David Baldacci in his novel The Camel Club.[29]

The islets also appear in Carolivia Herron's 1992 novel Thereafter, Johnnie,[30] and in Margaret Truman's 1995 murder-mystery novel Murder on the Potomac.[31]


  1. ^ Evelyn, Dickson, and Ackerman, p. 245; Potomac Planning Task Force, p. 64.
  2. ^ Flynn and Mason, p. 9; Stanton, p. xiv.
  3. ^ a b c Wahll, p. 128.
  4. ^ Smith, p. 22.
  5. ^ Emory Scott A.; Fanz, Amy K.; Hayes, Daniel; Schopp, Paul W.; and Gill, Christine. Combined Phase IB Archaeological Survey and Phase II Archaeological Investigation: SR 1 North Frederica Grade Separated Intersection, Frederica, Kent County, Delaware. Volume I. February 2007, p. 4. Accessed 2013-03-03.
  6. ^ McAtee, p. 62.
  7. ^ a b Wennerstrom, p. 27.
  8. ^ Mason, p. 5.
  9. ^ Office of Conservation, Interpretation, and Use, p. 44, 46.
  10. ^ Porterfield, p. 33.
  11. ^ Myer, p. 1; Jones, p. 71.
  12. ^ a b D'Angelis, p. 1-3.
  13. ^ Cultural Landscape Program, p. 7; Bahr, et al., p. 15-16.
  14. ^ "The Suburban Beauties of Washington." The Repository. January 1874, p. 59.
  15. ^ Skinner, p. 218; Alexander, p. 11.
  16. ^ a b Berg, p. 78.
  17. ^ D'Angelis, p. 4.
  18. ^ D'Angelis, p. 5.
  19. ^ Davis, p. 177.
  20. ^ "Women's Club to Hear About Parkway Plans." Washington Post. January 1, 1929; "Cramton Urges His Park Building Bill." Washington Post. February 14, 1929.
  21. ^ "Amendment Plans Great Falls Bridge." Washington Post. February 15, 1930.
  22. ^ "Appendix C: Capper-Cramton Act." Great Falls Park Final General Management Plan/EIS. George Washington Memorial Parkway. National Park Service. Fall 2007. Accessed 2012-10-24.
  23. ^ Craig, p. 1616-1617.
  24. ^ This plan would have redesignated the existing Whitehurst Freeway as the Potomac River Freeway, and extended the freeway on top of Canal Road NW to the Georgetown Reservoir, where it would become the Palisades Freeway. The Palisades Freeway would have connected to the Clara Barton Parkway.
  25. ^ Schrag, p. 120.
  26. ^ Dimento and Ellis, p. 164-167.
  27. ^ Schrag, p. 138-141.
  28. ^ Clarke, p. 12.
  29. ^ Baldacci, The Camel Club.
  30. ^ Herron, p. 109.
  31. ^ Truman, p. 97.


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