| Date - Field | Portugal - Waterways |
2012 January
Waterways | 210 km (on Douro River from Porto) (2010) |
2011 January
Waterways | 210 km (on Douro River from Porto) (2008) |
2010 January
Waterways | 210 km (on Douro River from Porto) (2008) |
2009 January
Waterways | 210 km (on Douro River from Porto) (2008) |
2008 January
Waterways | 210 km (on Douro River from Porto) (2006) |
2007 January
Waterways | 210 km (on Douro River from Porto) (2003) |
2006 January
Waterways | 210 km (on Douro River from Porto) (2003) |
2005 January
Waterways | 210 km (on Douro River from Porto) (2003) |
2004 January
Waterways | 820 km
note: relatively unimportant to national economy, used by shallow-draft craft limited to 300 metric-ton or less cargo capacity |
2003 January
Waterways | 820 km
note: relatively unimportant to national economy, used by shallow-draft craft limited to 300 metric-ton or less cargo capacity |
2002 January
Waterways | 820 km
note: relatively unimportant to national economy, used by shallow-draft craft limited to 300 metric-ton or less cargo capacity |
2001 January
Waterways | 820 km
note: relatively unimportant to national economy, used by shallow-draft craft limited to 300 metric-ton or less cargo capacity |
2000 January
Waterways | 820 km navigable; relatively unimportant to national economy, used by shallow-draft craft limited to 300 metric-ton or less cargo capacity |
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