Germany
7,500 km
note: major rivers include the Rhine and Elbe; Kiel Canal is an
important connection between the Baltic Sea and North Sea (1999)
Ghana
1,293 km
note: Volta, Ankobra, and Tano Rivers provide 168 km of perennial
navigation for launches and lighters; Lake Volta provides 1,125 km
of arterial and feeder waterways
Gibraltar
none
Glorioso Islands
none
Greece
80 km
note: system consists of three coastal canals including the Corinth
Canal (6 km) which crosses the Isthmus of Corinth connecting the
Gulf of Corinth with the Saronic Gulf and shortens the sea voyage
from the Adriatic to Peiraiefs (Piraeus) by 325 km; there are also
three unconnected rivers
Greenland
none
Grenada
none
Guadeloupe
none
Guam
none
Guatemala
990 km
note: 260 km navigable year round; additional 730 km navigable
during highwater season