Encyclopedia > Geography of Johnston Atoll

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Geography of Johnston Atoll

Location: Oceania, atoll in the North Pacific Ocean, about one-third of the way from Hawaii to the Marshall Islands

Geographic coordinates: 16 45 N, 169 30 W

Map references: Oceania

Area:
total: 2.8 sq km
land: 2.8 sq km
water: 0 sq km

Area - comparative: about 4.7 times the size of The Mall in Washington, DC

Land boundaries: 0 km

Coastline: 10 km

Maritime claims:
exclusive economic zone: 200 nm
territorial sea: 12 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: NA; guano deposits worked until depletion about 1890

Land use:
arable land: 0%
permanent crops: 0%
permanent pastures: 0%
forests and woodland: 0%
other: 100%

Irrigated land: 0 sq km (1998)

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; closed to the public; former US nuclear weapons test site; site of Johnston Atoll Chemical Agent Disposal System (JACADS); some low-growing vegetation

See also : Johnston Atoll



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