Rio Guaviare
Tributary in South America
The Guaviare is a tributary of the Orinoco in Colombia. It flows together with the upper Orinoco, which it clearly surpasses in length and water flow. Thus, the Guaviare is hydrologically the main stream of the Orinoco system. Wikipedia
Mouth: Orinoco
Length: 930.2 mi
Sources: Guayabero River and Río Ariari
Discharge: 289,600 ft³/s
Basin size: 140,000 km2 (54,000 sq mi)