Tárcoles River

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Tárcoles River
271tarcolesriver.JPG
view from near Carara
Origin Cordillera Central
Mouth Gulf of Nicoya
9°47′11″N 84°38′28″W / 9.786315°N 84.641175°W / 9.786315; -84.641175Coordinates: 9°47′11″N 84°38′28″W / 9.786315°N 84.641175°W / 9.786315; -84.641175
Basin countries  Costa Rica
Length 111 km (69 mi)
Mouth elevation 0 m (0 ft)
Basin area 2,121 km2 (819 sq mi)

The Tárcoles River, also called the Grande de Tárcoles River or the Río Grande de Tarcoles, in Costa Rica originates on the southern slopes of the Cordillera Central volcanic range and flows in a south-westerly direction to the Gulf of Nicoya.[1] The river is 111 km long and its watershed covers an area of 2,121 km²,[1] which encompasses around 50% of the country's population.[citation needed]

The river is the most contaminated river in Costa Rica, carrying much of the sewage from the central towns and cities. The river's watershed drains approximately 67% of Costa Rica's untreated organic and industrial waste and is considered the most contaminated river basin in the country.[1] It was also affected by a leak of 400 thousand litres of diesel fuel by the state-owned Costa Rican Petroleum Refinery in 2000 which further damaged the ecology of the river and its immediate surroundings.[citation needed]

The river's upper reaches form the northern border of the Carara Biological Reserve.[1] It is a habitat for American Crocodiles, while the marshes located at the river's mouth have many waterfowl and wading birds. Among the many herons and egrets are the Boatbill and Bare-throated Tiger Heron, and other birds found here include Double-striped Thick-knee, Mangrove Warbler and American Pygmy Kingfisher.

Reptiles, such as the American crocodile, caiman, common basilisk and large iguanas, are also easily seen.

Gallery[edit]

References[edit]

  1. ^ a b c d Ballestero, Maureen (2003). "Tárcoles River Basin, Costa Rica: Background Paper". worldbank.org.