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| Grande River | |
|---|---|
.jpg) Río Grande atPuerto Pailas | |
 Map of the Amazon Basin showing Río Grande (highlighted) | |
| Native name | Río Grande (Spanish) |
| Location | |
| Country | Bolivia |
| Physical characteristics | |
| Source | Sierra de Cochabamba |
| • elevation | 3,693 m (12,116 ft) |
| Mouth | Mamoré River |
• elevation | 174 m (571 ft) |
| Length | 820 km (510 mi)[1] |
TheRío Grande (orRío Guapay) in Bolivia rises on the southern slope of the Cochabamba mountains, east of the cityCochabamba, at17°26′11″S65°52′22″W / 17.43639°S 65.87278°W /-17.43639; -65.87278. At its source, it is known as theRocha River. It crosses the Cochabamba valley basin in a westerly direction, turning south east after 65 kilometres (40 mi) and after another 50 km (31 mi) joining theArque River at17°42′10″S66°14′45″W / 17.70278°S 66.24583°W /-17.70278; -66.24583 and an elevation of 2,350 m (7,710 ft).
From this junction the river receives the nameCaine River for 162 km (101 mi) and continues to flow in a south easterly direction, before it is called Río Grande. After a total of 500 km (310 mi) the river turns north east and in a wide curve flows round the lowland city ofSanta Cruz.
After 1,438 km (894 mi), the Río Grande joins theIchilo River at15°48′09″S64°43′47″W / 15.80250°S 64.72972°W /-15.80250; -64.72972 which is a tributary to theMamoré.
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