Dredged rivers and waterways

The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers approximately , with 65% of it in Venezuela and 35% in Colombia. It is the fourth largest river in the world by discharge volume of water ( at delta) due to the high precipitation throughout its catchment area (). The Orinoco River and its tributaries are the major transportation system for eastern and interior Venezuela and the Llanos of Colombia. The Guaviare River, with a flow of 8,200 cubic meters, is the main tributary. The environment and wildlife in the Orinoco'

watercourse in Ontario, Canada

river in the United Kingdom