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Johnston Atoll Geography

Johnston Atoll    Geography Top of Page
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

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: guano deposits worked until depletion about 1890, terrestrial and aquatic wildlife
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; egg-shaped reef is 34 km in circumference; closed to the public; former US nuclear weapons test site; site of Johnston Atoll Chemical Agent Disposal System (JACADS); some low-growing vegetation


Countryfacts Information Courtesy: CIA Worldbook

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