Venezuela Rivers number to a thousand. Most of the Rivers in Venezuela rise in the northern mountains and flow towards the south east to the Rio Apure, which is a tributary of Orinoco. Orinoco is the most important river of Venezuela. It covers a distance of more than 2,500 kilometers to the Atlantic Ocean from its source, which is in the Guiana highlands at the Brazilian border. Orinoco happens to be the eight largest river of the world and the second largest in South America after the Amazon. Few Venezuelan rivers flow into the Orinoco and increase the volume of water. Among the rivers of Venezuela, Caroni is another important one. The genesis of this river lies in the Guiana highlands, from where it flows towards the north into the Orinoco upstream. The Venezuela rivers are great attractions among the tourists for cruise rides as well as the natural beauty. Following is the list of rivers in Venezuela