WorldIslandInfo.com

Largest Islands of Washington DC

 

The District of Columbia has relatively few islands; this is actually a list of all the islands of the capital territory.

 

Rank

Island

Location

Area (approximate)

Acres or sq feet

Hectares or sq m

1

East Potomac Park

Potomac River

381

150

2

Columbia Island

Potomac River

129

52

3

Kingman Island

Anacostia River

96

39

4

Theodore Roosevelt Island

Potomac River

88.5

35.8

5

Heritage Island

Anacostia River

7

3

6

Little Island

Potomac River

6

2.4

7

south island, Kenilworth Marsh

Kenilworth Aquatic Gardens

5

2

8

north island, Kenilworth Marsh

Kenilworth Aquatic Gardens

5

2

9

south island, Kingman Lake

Anacostia River

4

1.6

10

north island, Kingman Lake

Anacostia River

2

0.8

11

middle island, Kingman Lake

Anacostia River

1.4

0.6

12

north-most i., Kenilworth Marsh

Kenilworth Aquatic Gardens

1.2

0.5

13

south i., Kenilworth Marsh

Kenilworth Aquatic Gardens

0.8

0.3

14

central i., Kenilworth Marsh

Kenilworth Aquatic Gardens

0.8

0.3

15

northern i., Kenilworth Marsh

Kenilworth Aquatic Gardens

0.6

0.2

16

south-most i., Kenilworth Marsh

Kenilworth Aquatic Gardens

0.6

0.2

17

island in Constitution Gardens pond

National Mall

0.54

0.22

18

northwestern of Three Sisters

Potomac River

2,100 sq ft

200 sq meters

19

southwestern of Three Sisters

Potomac River

2,000 sq ft

190 sq meters

20

eastern of Three Sisters

Potomac River

1,300 sq ft

120 sq meters

21

Potomac cove island, northwest DC

Potomac R., 38.9185 N, 77.1031 W

1,100 sq feet

100 sq meters

Sources: WorldIslandInfo.com measurements from US Geological Survey topographic maps unless otherwise noted. Theodore Roosevelt Island: National Park Service. Constitution Gardens, Three Sisters, cove island: WorldIslandInfo.com measurements from Bing Maps, viewed August 2009. Cove island: location from Trails.com aerial photos, viewed August 2009

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1995-2009 Joshua Calder

Contact Joshua Calder at calder.josh[at]gmail.com with questions or suggestions. 

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