Togo
50 km (seasonally on Mono River depending on rainfall) (2003)
Turkey
1,200 km (2003)
Turkmenistan
1,300 km (Amu Darya and Kara Kum canal important inland
waterways) (2003)
Uganda
300 km (on Lake Victoria, 200 km on Lake Albert, Lake Kyoga,
and parts of Albert Nile) (2004 est.)
Ukraine
1,672 km (most on Dnieper River) (2004)
United Kingdom
3,200 km (620 km used for commerce) (2004)
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 (2002)
Uzbekistan
1,100 km (2004)
Venezuela
7,100 km
note: Orinoco River and Lake de Maracaibo navigable by oceangoing
vessels, Orinoco for 400 km (2004)