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Johnston Atoll Geography
Location:
Oceania, atoll in the North Pacific Ocean 717 nm (1328 km) southwest of Honolulu, Hawaii, about one-third of the way from Hawaii to the Marshall Islands
Geographic coordinates:
16 45 N, 169 31 W
Map references:
oceania
Area:
total: 2.8 sq km
water: 0 sq km
land: 2.8 sq km
Area - comparative:
about 4.7 times the size of The Mall in Washington, DC
Land boundaries:
0 km
Coastline:
34 km
Maritime claims:
territorial sea: 12 nm
exclusive economic zone: 200 nm
Climate:
tropical, but generally dry; consistent northeast trade winds with little seasonal temperature variation
Terrain:
mostly flat
Elevation extremes:
lowest point: Pacific Ocean 0 m
highest point: Summit Peak 5 m
Natural resources:
guano deposits worked until depletion about 1890, terrestrial and aquatic wildlife
Land use:
arable land: 0%
permanent crops: 0%
other: 100% (2001)
Irrigated land:
0 sq km (1998 est.)
Natural hazards:
NA
Environment - current issues:
no natural fresh water resources
Geography - note:
strategic location in the North Pacific Ocean; Johnston Island and Sand Island are natural islands, which have been expanded by coral dredging; North Island (Akau) and East Island (Hikina) are manmade islands formed from coral dredging; the egg-shaped reef is 34 km in circumference; closed to the public; a former US nuclear weapons test site; site of now-closed Johnston Atoll Chemical Agent Disposal System (JACADS); most facilities dismantled and cleanup complete in 2004; some low-growing vegetation
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