The Cauca River (Шаблон:Lang-es) is a river in Colombia that lies between the Occidental and Centralcordilleras. From its headwaters in southwestern Colombia near the city of Popayán, it joins the Magdalena River near Magangué in Bolívar Department, and the combined river eventually flows out into the Caribbean Sea. It has a length of Шаблон:Convert to its junction with the Magdalena, for a total length of Шаблон:Convert. from origin to sea mouth. The river is under the supervision of the Cauca Regional Corporation and the Cauca Valley Regional Autonomous Corporation, and is navigable for Шаблон:Convert above its junction with the Magdalena.
On November 18, 2007, Colombian newspaper El Tiempo reported that the river was receiving an average of 500 tons of residual waste a day. Pollution from the city of Popayán, seven gold mines that also add industrial pollutants such as mercury, some 8 sand mills, plus a couple of mines of coal and bauxite. Cali, the largest city on the river, depends on the river in a 76 percent. Adding to these other affluent rivers collect residual waters from other major cities and deposit an approximate of 330 tons of residual waste into the river. By the time it gets to Yumbo the river has no oxygen.[1]
The Hidroituango energy dam project has seriously affected the Cauca River.[2] The dam has decreased its flow in some parts, up to 80%.
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