Selden Island

Selden Island
	USGS Map of Selden Island
	Selden Island Selden Island (Maryland)
Geography
Location	Potomac River
Coordinates	39°04′31″N 77°27′10″W
Area	408 acres (165 ha)
Length	4.0 km (2.49 mi)
Width	0.3–0.5 km (0.19–0.31 mi)
Highest elevation	65 m (213 ft)
Administration
	United States
State	Maryland
County	Montgomery
Demographics
Population	0 (2022)

Selden Island is a 408-acre island in the Potomac River, located about 32 km (20 mi) WNW of Washington, DC. It is about 4 km long and 0.4–0.5 km wide (2.5 x 1/4–1/3 miles). Although it is located within Montgomery County, Maryland, the only road access is via a bridge connecting it to the Loudoun County, Virginia side of the river.

Archaeological evidence indicates the island has been a site of human activity since the Early Woodland period, around 1000 BCE. A characteristic type of pottery known as Selden Island ware dates from this period.[1] It is also the site of a significant Late Woodland period settlement known as the Walker Prehistoric Village, which was added to the National Register of Historic Places in 1975.[2]

In 2002, following the diagnosis of two Loudoun County teenagers with malaria, mosquitoes from the island were found to carry the Plasmodium vivax malarial parasite.[3]

In 2004, Selden Island was purchased by the Howard Hughes Medical Institute as an addition to the Janelia Farm Research Campus.[4] It was formerly leased as a sod farm.

References

"Diagnostic Artifacts in Maryland". Maryland Archaeological Conservation Laboritory. Retrieved 1 January 2014.
"Walker Prehistoric Village Archeological Site". Maryland Historical Trust. Retrieved 15 February 2011.
Hopkins Tanne, Janice (19 October 2002). "Teenagers catch malaria from local mosquitoes near Washington, DC". British Medical Journal. 325 (7369): 854. doi:10.1136/bmj.325.7369.854/c. PMC 1169563. PMID 12386025.
"HHMI Opens the Doors to Discovery at the Janelia Farm Research Campus". Howard Hughes Medical Institute. 6 September 2006. Retrieved 28 July 2014.

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[ArtifactsMD-1] "Diagnostic Artifacts in Maryland". Maryland Archaeological Conservation Laboritory. Retrieved 1 January 2014.

[mht-2] "Walker Prehistoric Village Archeological Site". Maryland Historical Trust. Retrieved 15 February 2011.

[BMJ-3] Hopkins Tanne, Janice (19 October 2002). "Teenagers catch malaria from local mosquitoes near Washington, DC". British Medical Journal. 325 (7369): 854. doi:10.1136/bmj.325.7369.854/c. PMC 1169563. PMID 12386025.

[vabio-4] "HHMI Opens the Doors to Discovery at the Janelia Farm Research Campus". Howard Hughes Medical Institute. 6 September 2006. Retrieved 28 July 2014.