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Albania-Greece
Albania-Kosovo
Albania-Macedonia
Albania-Montenegro
Andorra-France
Andorra-Spain
Armenia-Azerbaijan
Armenia-Georgia
Armenia-Nakhchivan (Azerbaijan)
Austria-Czech Republic
Austria-Germany
Austria-Hungary
Austria-Italy
Austria-Liechtenstein
Austria-Slovenia
Austria-Slovakia
Austria-Switzerland
Azerbaijan-Georgia
Azerbaijan-Russia
Belarus-Latvia
Belarus-Lithuania
Belarus-Poland
Belarus-Russia
Belarus-Ukraine
Belgium-France
many tiny streams (
Ruisseaux) omitted
Belgium-Germany
Belgium-Luxembourg
Belgium-Netherlands
Bosnia and Herzegovina-Croatia
Bosnia and Herzegovina-Montenegro
Bosnia and Herzegovina-Serbia
Bulgaria-Greece
Bulgaria-Macedonia
Bulgaria-Romania
Bulgaria-Serbia
Bulgaria-Turkey
Croatia-Montenegro
Croatia-Hungary
Croatia-Serbia
Croatia-Slovenia
Czech Republic-Germany
Czech Republic-Poland
Czech Republic-Slovakia
Denmark-Germany
Estonia-Latvia
Estonia-Russia
Finland-Norway
Finland-Russia
Finland-Sweden
France-Germany
France-Italy
France-Luxembourg
France-Monaco
France-Switzerland
France-Spain
Georgia-Russia
Germany-Luxembourg
Entire border formed by these:
Germany-Netherlands
Germany-Poland
Germany-Switzerland
Greece-Macedonia
Greece-Turkey
Hungary-Romania
Hungary-Serbia
Hungary-Slovakia
Hungary-Slovenia
Hungary-Ukraine
Ireland-United Kingdom
Italy-San Marino
Italy-Slovenia
Italy-Switzerland
Italy-Vatican City
Kosovo-Macedonia
Kosovo-Montenegro
Kosovo-Serbia
Kaliningrad (Russia)-Lithuania
Kaliningrad (Russia)-Poland
Kazakhstan-Russia
Latvia-Lithuania
Latvia-Russia
Liechtenstein-Switzerland
Lithuania-Poland
Macedonia-Serbia
Moldova-Romania
Moldova-Ukraine
Moldova-Transnistria
Montenegro-Serbia
Norway-Sweden
Poland-Slovakia
Poland-Ukraine
Portugal-Spain
-
Rio Miño/
Rio Minho/
Rio Mino/
Miño River/
Minho River/
Mino River
-
Rio Limia/
Rio Lima/
Lima River/
Ribera de Lima/
Limia River/
Ribera de Limia
-
Rio Salas/
Salas River/
Ribera de Salas (not conejo de
Salas): possibly crosses border draining from el
Embalse de Salas/
Salas Reservoir near
Calvos de Randín,
Galicia and
Tourém,
Montalegre (
Portugal) (not conejo de
Salas)
-
Tâmega
-
Rio Mente/
Mente River/
Ribera de Mente/
Mente: forms border between
Riós and
Vilardevós,
Galicia and
Vinhais,
Bragança
-
Rio Rabaçal/
Rabaçal River/
Rio Rabacal/
Rabacal River/
Rabaçal/
Rabacal: appears to form a small part of the border northeast of
Quirás/
Quiras between
Vinhais,
Bragança and
A Gudiña,
Galicia.
Rio de Onor/
Onor River/
Ribera de Onor: crosses border at
Rihonor de Castilla,
Pedralba de la Pradería,
Zamora (
Spain) and
Rio de Onor (town),
Bragança,
Bragança.
-
Rio Maçãs/
Rio Macas/
Maçãs River/
Macas River: forms much of the border between
Bragança and
Rábano de Aliste
-
Duero/
Rio Duero
-
Águeda River
-
Erges/
Rio Erges/
Erges River (
Tagus tributary)
-
Tagus/
Rio Tajo/
Tajo River/
Tajo
-
Sever/
Rio Sever/
Sever River (
Tagus tributary)
-
Xévora/
Xevora/
Rio Xévora/
Rio Xevora/
Xévora River/
Xevora River (???)
-
Guadiana and several unidentified border-forming tributaries and distributaries
-
Guadalim/
Ribera de Guadalim/
Rio Guadalim/
Guadalim River: Guadiana tributary, crosses northeast of
Amareleja
-
Ardila/
Rio Ardila/
Ardila River/
Ribera de Ardila: Guadiana tributary, forms border
-
Murtega/
Rio Murtega/
Murtega River/
Ribera de Murtega: Ardila tributary, crosses border
-
Murtegão/
Murtegao River/
Ribera de Murtegão: Ardila tributary, crosses border
-
Rivera de Chanza: Guadiana tributary
-
Guadiana (again)
Romania-Serbia
Romania-Ukraine
Russia-Ukraine
Slovakia-Ukraine
Transnistria-Ukraine