Mauritania
some ferry traffic on Senegal River (2004)
Mexico 2,900 km note: navigable rivers and coastal canals (2004)
Moldova
424 km (2004)
Mongolia
580 km
note: only waterway in operation is Lake Khovsgol (135 km); Selenge
River (270 km) and Orkhon River (175 km) are navigable but carry
little traffic; lakes and rivers freeze in winter, are open from May
to September (2004)
Mozambique
460 km (Zambezi River navigable to Tete and along Cahora
Bassa Lake) (2004)
Netherlands
5,046 km (navigable for ships of 50 tons) (2004)
Nicaragua
2,220 km (including lakes Managua and Nicaragua) (1997)
Niger
300 km
note: Niger River is navigable to Gaya between September and March
(2004)
Nigeria
8,600 km (Niger and Benue rivers and smaller rivers and
creeks) (2004)
Panama
800 km (includes 82 km Panama Canal) (2004)