Meta River

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Meta
Origin	Colombia
Mouth	Orinoco at Puerto Carreño
Basin countries	Colombia, Venezuela
Length	804 km
Source elevation	c. 1300 m
Basin area	93,800 km²

The Meta River is formed in the Meta Department, Colombia by the confluence of the Humea, Guatiquía and Guayuriba rivers. It flows east-northeastward across the Llanos Orientales plains of Colombia through an ancient fault. The Meta forms the northern boundary of Vichada Department, first with Casanare Department, then with Arauca Department, and finally with Venezuela, down to Puerto Carreño where it flows into the Orinoco.

The Meta river is 804 km long and its drainage basin is 93,800 km². The Meta divides the Colombian llanos in two different realms: the western portion on the left is more humid, receives the relatively nutrient-rich sediments from the Andean mountain range and therefore soils and tributaries are also nutrient-rich, while the eastern portion, high plain or altillanura, drains not to the Meta river but to the Orinoco, has a longer dry season and soils and surface waters are oligotrophic (nutrient poor).

The major tributaries of the Meta are the Cravo Sur, the Casanare, the Cusiana, the Upía and the Manacacías.

[edit] Economics

Starting at Puerto López the Meta becomes navigatable, and thus is an important component of the trade across the Colombian and Venezuelan llanos.