Cabo Verde | Capital, Map, Language, People, & Portugal | Britannica

Relief, drainage, and soils

The terrain of the Cabo Verde islands varies from the geologically older, flatter islands in the east and the newer, more mountainous islands in the west. The eastern islands of Boa Vista, Maio, and Sal, for example, have been heavily eroded by the wind over time and are very sandy and flat. The others are very rocky, jagged, and mountainous. Fogo (“Fire”) Island’s active volcano, Pico, rises 9,281 feet (2,829 metres) and is the highest point of the archipelago. On the northern island of Santo Antão, Tope de Coroa reaches 6,493 feet (1,979 meters).

There are few permanent watercourses in the islands, which generally suffer from seasonal rains, cyclical drought, and chronic water shortages. When precipitation does occur, it is often in the form of torrential downpours that cause significant damage through water erosion, flooding, and the destruction of containment dams.

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Cabo Verde’s soils, primarily volcanic or igneous in origin, are generally shallow, coarse, and rocky. Almost a quarter of the land area is rock of volcanic origin; basalt is a common type. More than three-fifths of the land is arid and lacking in humus and thus is suitable only for rough grazing; sand and limestone outcrops are common in these areas. Only a fraction of the total area has proper humus and sufficient water supplies for significant irrigation agriculture. Soil loss through wind and water erosion is a serious challenge. Since independence a nationwide campaign to prevent erosion—e.g., by promoting reforestation—has been under way.

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