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Calabar River

nigeria, ,
Landmark

Description

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The Calabar River in Cross River State, Nigeria flows from the north past the city of Calabar, joining the larger Cross River about 8km to the south. The river at Calabar forms a natural harbor deep enough for vessels with a draft of 6m.The Calabar River was once a major source of slaves brought down from the interior to be shipped west in the Atlantic slave trade. Slaving was suppressed by 1860, but the port of Calabar remained important for export of palm oil and other products, until it was eclipsed by Port Harcourt in the 1920s. With improved roads into the interior, Calabar has regained importance as a port and is growing rapidly. The tropical rain forest in the Calabar River basin is rapidly being destroyed, and pollution is decreasing fish and shrimp catches in the estuary. Those that are caught have unsafe levels of contaminants.LocationThe Calabar River drains part of the Oban Hills in the Cross River National Park. The geology of the river basin includes the Pre-Cambrian Oban Massif, Cretaceous sediments of the Calabar flank and the recent Niger Delta sedimentary basin. The basin is about 43km wide and 62km long, with an area of 1514km2 At one time it was entirely covered by tropical rainforest.The region has a rainy season from April until October, during which 80% of the annual rain falls, with peaks in June and September. Annual rainfall averages 1830mm. Average temperatures range from 24°C in August to 30°C in February. Relative humidity is high, between 80% and 100%. The basin has 223 streams with a total length of 516km. This is a small number given the size of the basin. Drainage is poor, so the basin is subject to flooding, gully erosion and landslides. A 2010 study said that flooding had increased in recent years.

Quiz

NEAR Calabar River