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Cauca River
The Cauca River ((スペイン語:Río Cauca)) is a river in Colombia that lies between the Occidental and Central cordilleras. 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 to its junction with the Magdalena, for a total length of . from origin to seamouth. The river is under the supervision of the ''Corporación Regional del Cauca'' and the ''Corporación Autonoma Regional del Valle del Cauca'', and is navigable for above its junction with the Magdalena.
==Environmental issues==
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.〔( eltiempo.com: Al río Cauca lo están matando las 500 toneladas de contaminantes que le caen cada día )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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