Uganda
on Lake Victoria, 200 km on Lake Albert, Lake Kyoga, and
parts of Albert Nile (2005)
Ukraine
2,253 km (most on Dnieper River) (2006)
United Kingdom
3,200 km (620 km used for commerce) (2003)
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 (2004)
Uruguay
1,600 km (2005)
Uzbekistan
1,100 km (2006)
Venezuela
7,100 km
note: Orinoco River and Lake de Maracaibo navigable by oceangoing
vessels, Orinoco for 400 km (2005)
Vietnam
17,702 km (5,000 km navigable by vessels up to 1.8 m draft)
(2005)
World
671,886 km (2004)
Zambia
2,250 km (includes Lake Tanganyika and the Zambezi and
Luapula rivers) (2005)