Geography of Guam

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: Total: 541.3 km² Land: 541.3 km² Water: 0 km²

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: Lowest point: Pacific Ocean 0 m 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

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