Size: Approximately 48,442 square kilometers.

Topography: Mountain ranges divide country into three regions: northern, central, and southwestern. Seven major drainage basins, most important that of Yaque del Norte River. Largest body of water Lago Enriquillo (Lake Enriquillo), in southwest. Highest mountain peak, Pico Duarte, rises in Cordillera Central (Central Range) to height of 3,087 meters.

Climate: Primarily tropical, with temperatures varying according to altitude. Seasons defined more by rainfall than by temperature. For most of country, rainy season runs roughly from May through November dry season, from November through April. Rainfall not uniform throughout country because of mountain ranges. Tropical cyclones strike country on average of once every two years and usually have greatest impact along southern coast.

Data as of December 1989