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The Lempa River (Spanish: Río Lempa) is a 422-kilometre-long (262 mi) river in Central America.[2]
| Lempa River | |
|---|---|
 Sunset over the Lempa river | |
 Railroad Bridge (FENADESAL) over the Lempa river, as seen from the Carretera del Litoral highway bridge (El Salvador) | |
  | |
| Location | |
| Countries | |
| Physical characteristics | |
| Source | Sierra Madre |
| • location | Olopa, Chiquimula, Guatemala |
| • coordinates | 14°41′33″N 89°18′18″W |
| • elevation | 1,200 m (3,900 ft) |
| Mouth | Pacific Ocean |
• location | El Playón, Tecoluca, San Vicente, El Salvador |
• coordinates | 13°15′17″N 88°49′38″W |
• elevation | 0 m (0 ft) |
| Length | 422 km (262 mi) |
| Basin size | 18,246 km2 (7,045 sq mi) |
| Discharge | |
| • location | Cuscatlan bridge[1] |
| • average | 362 m3/s (12,800 cu ft/s) |
Its sources are located in between the Sierra Madre and the Sierra del Merendón mountain ranges in southern Guatemala, near the town of Olopa.[2] In Guatemala, the river is called Río Olopa and flows southwards for 30.4 kilometres (18.9 mi) before entering Honduras and changing its name to Lempa River at 14.547700°N 89.264002°W. In Honduras, it flows through Ocotepeque Department for 31.4 kilometres (19.5 mi), and crosses the border with El Salvador at the town of Citalá (14.371857°N 89.212439°W) in the department of Chalatenango. The river continues its course for another 360 kilometres (220 mi) in El Salvador, flowing in a generally southwards direction until it reaches the Pacific Ocean in the department of San Vicente.[2][3] The river forms a small part of the international boundary between El Salvador and Honduras.
The river's watershed covers 18,246 km2 (7,045 sq ml) of which 10,255 km2 (3,959 sq ml), of which 56.56% lie in El Salvador, 5,696 km2 (2,199 sq ml) in Honduras and 2,295 km2 (886 sq ml) in Guatemala.[1] Forty-nine percent of El Salvador's territory is covered by the Lempa river basin,[1] and 77.5 percent of the Salvadoran population lives in cities, towns, and villages that are in its basin, including the capital city of San Salvador.[3]
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There are several hydroelectric dams along the river. In El Salvador, there is the Guayojo dam, the Cerrón Grande Hydroelectric Dam, the 5 de Noviembre dam, and the 15 de Septiembre dam, which can be easily seen from the Pan-American highway.
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