A River Border is a border between states or their subdivisions which is concomitant with natural formations such as rivers, mountain ranges, or deserts. Listed below are few of them :-
1. Colorado River
The Colorado River forms the border between United States and Mexico.
2. Kagera River
The Kagera River flows east along the Rwanda-Burundi and Rwanda-Tanzania borders to a confluence with the Ruvubu River.
3. Cuando River
The Cuando River flowing through Angola and Namibia’s Caprivi Strip into the Linyanti Swamp on the northern border of Botswana.
4. Rainy River
Rainy River forms part of the U.S.-Canada border separating northern Minnesota and Northwestern Ontario.
5. Detroit River
The whole river is coterminous with the international border between Canada and the United States.
6. Artibonite River
The Artibonite River is forming part of the international border between Haiti and the Dominican Republic.
7. Quaraí River
The Quaraí River forms the boundary between Uruguay on the south and Rio Grande do Sul state of Brazil on the north.
8. St. Marys River
St. Marys River is separating Michigan in the United States from Ontario, Canada.
9. Danube River
The Danube River separates Hungary from Slovakia.
10. Limpopo River
The river forms the border for about 640 km separating South Africa from Botswana to the northwest and Zimbabwe to the north.
11. Aras River
The Aras River form the boundary between Nakhchivan and Iran.
12. Akhurian River
The Akhurian River marks the border between Turkey and Armenia.
13. Tumen River
The Tumen River at the border between North Korea and China.