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Guam:
Geography

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Guam Page


Background
Definition
Guam was ceded to the US by Spain in 1898. Captured by the Japanese in 1941, it was retaken by the US three years later. The military installation on the island is one of the most strategically important US bases in the Pacific.
Location
Definition
Oceania, island in the North Pacific Ocean, about three-quarters of the way from Hawaii to the Philippines
Geographic coordinates
Definition
13 28 N, 144 47 E
Map references
Definition
Oceania
Area
Definition - World rank and map
total: 541.3 sq km
land: 541.3 sq km
water: 0 sq km
Area - comparative
Definition
three times the size of Washington, DC
Land boundaries
Definition
0 km
Coastline
Definition
125.5 km
Maritime claims
Definition
territorial sea: 12 nm
exclusive economic zone: 200 nm
Climate
Definition
tropical marine; generally warm and humid, moderated by northeast trade winds; dry season (January to June), rainy season (July to December); little seasonal temperature variation
Terrain
Definition
volcanic origin, surrounded by coral reefs; relatively flat coralline limestone plateau (source of most fresh water), with steep coastal cliffs and narrow coastal plains in north, low hills in center, mountains in south
Elevation extremes
Definition
lowest point: Pacific Ocean 0 m
highest point: Mount Lamlam 406 m
Natural resources
Definition
aquatic wildlife (supporting tourism), fishing (largely undeveloped)
Land use
Definition - World rank and map
arable land: 3.64%
permanent crops: 18.18%
other: 78.18% (2005)
Irrigated land
Definition
NA
Natural hazards
Definition
frequent squalls during rainy season; relatively rare, but potentially very destructive typhoons (June - December)
Environment - current issues
Definition
extirpation of native bird population by the rapid proliferation of the brown tree snake, an exotic, invasive species
Geography - note
Definition
largest and southernmost island in the Mariana Islands archipelago; strategic location in western North Pacific Ocean


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