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Geography of Guam

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This article describes the geography of Guam.

; Location:

Oceania, island in the North Pacific Ocean, about three-quarters of the way from Hawaii to the Philippines
; Geographic coordinates:
13° 28′ N, 144° 47′ E
; Map references:
Oceania
; Area:
Land: 541.3 km²
Water: 0 km²
; Area--comparative:
Three times the size of Washington, DC
; Land boundaries:
0 km
; Coastline:
125.5 km
; Maritime claims:
  • Exclusive economic zone: 200 nm
Territorial sea: 12 nm
; Climate:
Tropical marine; generally warm and humid, moderated by northeast trade winds; dry season from January to June, rainy season from July to December; little seasonal temperature variation
; Terrain:
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-rising hills in center, mountains in south
; Elevation extremes:
Highest point: Mount Lamlam 406 m
; Natural resources:
Fishing (largely undeveloped), tourism (especially from Japan)
; Land use:
  • Arable land: 11%
Permanent crops: 11%
Permanent pastures: 15%
Forests and woodland: 18%
Other: 45% (1993 est.)
; Irrigated land:
NA km²
; Natural hazards:
Frequent squalls during rainy season; relatively rare, but potentially very destructive typhoons (especially in August)
; Environment--current issues:
Extirpation of native bird population by the rapid proliferation of the brown tree snake, an exotic species
; Geography--note:
Largest and southernmost island in the Mariana Islands archipelago; strategic location in western North Pacific Ocean

See also: Guam