Geography of Nicaragua

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Nicaragua is a country in Central America, bordering both the Caribbean Sea and the North Pacific Ocean, between Costa Rica and Honduras. Approximately the size of New York state, it is the largest country in Central America. The country covers a total area of 129,494 square kilometers (120,254 square kilometers of which are land area) and contains a diversity of climates and terrains. The country's physical geography divides it into three major zones: Pacific lowlands, the wetter, cooler central highlands, and the Caribbean lowlands.

Geographic coordinates: 13°00′N 85°00′W

Contents 1 Natural regions 2 Climate 3 Other facts 4 References 5 External links

[edit] Natural regions

The Pacific lowlands extend about 75 kilometers inland from the Pacific coast. Most of the area is flat, except for a line of young volcanoes, many of which are still active, running between the Golfo de Fonseca and Lago de Nicaragua. These peaks lie just west of a large crustal fracture or structural rift that forms a long, narrow depression passing southeast across the isthmus from the Golfo de Fonseca to the Río San Juan. The rift is occupied in part by the largest freshwater lakes in Central America: Lago de Managua (56 kilometers long and 24 kilometers wide) and Lago de Nicaragua (about 160 kilometers long and 75 kilometers wide). These two lakes are joined by the Río Tipitapa, which flows south into Lago de Nicaragua. Lago de Nicaragua in turn drains into the Río San Juan (the boundary between Nicaragua and Costa Rica), which flows through the southern part of the rift lowlands to the Caribbean Sea. The valley of the Río San Juan forms a natural passageway close to sea level across the Nicaraguan isthmus from the Caribbean Sea to Lago de Nicaragua and the rift. From the southwest edge of Lago de Nicaragua, it is only nineteen kilometers to the Pacific Ocean. This route was considered as a possible alternative to the Panama Canal at various times in the past.

Surrounding the lakes and extending northwest of them along the rift valley to the Golfo de Fonseca are fertile lowland plains highly enriched with volcanic ash from nearby volcanoes. These lowlands are densely populated and well cultivated. More directly west of the lake region is a narrow line of ash-covered hills and volcanoes that separate the lakes from the Pacific Ocean. This line is highest in the central portion near León and Managua.

Because western Nicaragua is located where two major tectonic plates collide, it is subject to earthquakes and volcanic eruptions. Although periodic volcanic eruptions have caused agricultural damage from fumes and ash, earthquakes have been by far more destructive to life and property. Hundreds of shocks occur each year, some of which cause severe damage. The capital city of Managua was virtually destroyed in 1931 and again in 1972.

The triangular area known as the central highlands lies northeast and east of the Pacific lowlands. This rugged mountain terrain is composed of ridges 900 to 1,800 meters high and a mixed forest of oak and pine alternating with deep valleys that drain primarily toward the Caribbean. Very few significant streams flow west to the Pacific Ocean; those that do are steep, short, and flow only intermittently. The relatively dry western slopes of the central highlands, protected by the ridges of the highlands from the moist winds of the Caribbean, have drawn farmers from the Pacific region since colonial times and are now well settled. The eastern slopes of the highlands are covered with rain forests and are lightly populated with pioneer agriculturalists and small communities of indigenous people.

The eastern Caribbean lowlands of Nicaragua form the extensive (occupying more than 50 percent of national territory) and still sparsely settled lowland area known as Costa de Mosquitos. The Caribbean lowlands are sometimes considered synonymous with the former department of Zelaya, which is now divided into the North Atlantic Autonomous Region (Región Autonomista Atlántico Norte) and the South Atlantic Autonomous Region (Región Autonomista Atlántico Sur) and constitutes about 45 percent of Nicaragua's territory. These lowlands are a hot, humid area that includes coastal plains, the eastern spurs of the central highlands, and the lower portion of the Río San Juan basin. The soil is generally leached and infertile. Pine and palm savannas predominate as far south as the Laguna de Perlas. Tropical rain forests are characteristic from the Laguna de Perlas to the Río San Juan, in the interior west of the savannas, and along rivers through the savannas. Fertile soils are found only along the natural levees and narrow floodplains of the numerous rivers, including the Escondido, the Río Grande de Matagalpa, the Prinzapolka, and the Coco, and along the many lesser streams that rise in the central highlands and cross the region en route to the complex of shallow bays, lagoons, and salt marshes of the Caribbean coast.

[edit] Climate

Temperature varies little with the seasons in Nicaragua and is largely a function of elevation. The tierra caliente, or the "hot land," is characteristic of the foothills and lowlands from sea level to about 750 meters of elevation. Here, daytime temperatures average 30° C to 33° C, and night temperatures drop to 21° C to 24° C most of the year. The tierra templada, or the "temperate land," is characteristic of most of the central highlands, where elevations range between 750 and 1,600 meters. Here, daytime temperatures are mild (24° C to 27° C), and nights are cool (15° C to 21° C). Tierra fría, the "cold land," at elevations above 1,600 meters, is found only on and near the highest peaks of the central highlands. Daytime averages in this region are 22° C to 24° C, with nighttime lows below 15° C.

Rainfall varies greatly in Nicaragua. The Caribbean lowlands are the wettest section of Central America, receiving between 2,500 and 6,500 millimeters of rain annually. The western slopes of the central highlands and the Pacific lowlands receive considerably less annual rainfall, being protected from moistureladen Caribbean trade winds by the peaks of the central highlands. Mean annual precipitation for the rift valley and western slopes of the highlands ranges from 1,000 to 1,500 millimeters. Rainfall is seasonal--May through October is the rainy season, and December through April is the driest period.

During the rainy season, eastern Nicaragua is subject to heavy flooding along the upper and middle reaches of all major rivers. Near the coast, where river courses widen and river banks and natural levees are low, floodwaters spill over onto the floodplains until large sections of the lowlands become continuous sheets of water. River bank agricultural plots are often heavily damaged, and considerable numbers of savanna animals die during these floods. The coast is also subject to destructive tropical storms and hurricanes, particularly from July through October. The high winds and floods accompanying these storms often cause considerable destruction of property. In addition, heavy rains (called papagayo storms) accompanying the passage of a cold front or a low-pressure area may sweep from the north through both eastern and western Nicaragua (particularly the rift valley) from November through March. Hurricanes or heavy rains in the central highlands, where agriculture has destroyed much of the natural vegetation, also cause considerable crop damage and soil erosion. In 1988 Hurricane Joan forced hundreds of thousands of Nicaraguans to flee their homes and caused more than US$1 billion in damage, most of it along the Caribbean coast.

[edit] Other facts

Area:
total: 129,494 km²
land: 120,254 km²
water: 9,240 km²

Area - comparative: slightly smaller than the state of New York

Land boundaries:
total: 1,231 km
border countries: Costa Rica 309 km, Honduras 922 km

Coastline: 910 km

Maritime claims:
contiguous zone: 25-nm security zone
continental shelf: natural prolongation
territorial sea: 200 nautical miles (370 km)

Climate: tropical in lowlands, cooler in highlands

Terrain: extensive Atlantic coastal plains rising to central interior mountains; narrow Pacific coastal plain interrupted by volcanoes; Lake Nicaragua (or Lake Cocibolca) is the second largest lake in Latin America.

Elevation extremes:
lowest point: Pacific Ocean 0 m
highest point: Mogoton 2,438 m

Natural resources: gold, silver, copper, tungsten, lead, zinc, timber, fish

Land use:
arable land: 9%
permanent crops: 1%
permanent pastures: 46%
forests and woodland: 27%
other: 17% (1993 est.)

Irrigated land: 880 km² (1993 est.)

Natural hazards: destructive earthquakes, volcanoes, landslides, and occasionally severe hurricanes

Environment - current issues: deforestation; soil erosion; water pollution; Hurricane Mitch damage

Environment - international agreements:
party to: Biodiversity, Climate Change, Climate Change-Kyoto Protocol, Desertification, Endangered Species, Hazardous Wastes, Nuclear Test Ban, Ozone Layer Protection, Wetlands
signed, but not ratified: Environmental Modification, Law of the Sea

[edit] References

• This article contains material from the Library of Congress Country Studies, which are United States government publications in the public domain.
• This article contains material from the CIA World Factbook which, as a US government publication, is in the public domain.

[edit] External links

• Photos and information about the volcanoes in Nicaragua