United Kingdom
3,200 km (620 km used for commerce) (2008)
United States
41,009 km (19,312 km used for commerce)
note: Saint Lawrence Seaway of 3,769 km, including the Saint
Lawrence River of 3,058 km, shared with Canada (2008)
Uruguay
1,600 km (2010)
Uzbekistan
1,100 km (2009)
Venezuela
7,100 km
note: Orinoco River (400 km) and Lake de Maracaibo navigable by
oceangoing vessels (2010)
Vietnam
17,702 km (5,000 km navigable by vessels up to 1.8 m draft)
(2011)
World
671,886 km (2004)
top ten longest rivers: Nile (Africa) 6,693 km; Amazon (South
America) 6,436 km; Mississippi-Missouri (North America) 6,238 km;
Yenisey-Angara (Asia) 5,981 km; Ob-Irtysh (Asia) 5,569 km; Yangtze
(Asia) 5,525 km; Yellow (Asia) 4,671 km; Amur (Asia) 4,352 km; Lena
(Asia) 4,345 km; Congo (Africa) 4,344 km
note: if measured by volume, the Amazon is the largest river in the
world
Zambia
2,250 km; (includes Lake Tanganyika and the Zambezi and
Luapula rivers) (2010)
Zimbabwe
on Lake Kariba (2009)
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