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This is a List of international river borders. Rivers that form any portion of the border between two countries minimum:
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This is a List of international river borders. Rivers that form any portion of the border between two countries minimum:
| River | Bordering country |
|---|---|
| Amazon River |  Colombia,  Peru and  Brazil |
| Apaporis River | Colombia and Brazil |
| Arauca River | Colombia and  Venezuela |
| Bermejo River |  Argentina and  Bolivia |
| Catatumbo River | Colombia and Venezuela |
| Courantyne River |  Guyana and  Suriname |
| Cuareim River | Brazil and  Uruguay |
| Guaitara River | Colombia and  Ecuador |
| Iguazu River | Argentina and Brazil |
| Maroni River |  French Guiana and Suriname |
| Mataje River | Colombia and Ecuador |
| Meta River | |
| Mira River | |
| Negro River | |
| Oiapoque River | Brazil and French Guiana |
| Orinoco River | Colombia and Venezuela |
| Paraguay River | Argentina and  Paraguay |
| Paraguay River | Brazil and Paraguay |
| Paraná River | Argentina and Paraguay |
| Paraná River | Brazil and Paraguay |
| Pilcomayo River | Argentina and Paraguay |
| Putumayo River | Colombia and Peru |
| Rapirrán River | Brazil and Bolivia |
| Rapirrán River | Brazil and Peru |
| Uruguay River | Argentina and Uruguay |
| Uruguay River | Brazil and Argentina |
| Vaupés River | Colombia and Brazil |
| Yaguaron River | Brazil and Uruguay |
| Zulia River | Colombia and Venezuela |
Rivers that form borders between countries in Europe include:
Armenia is a landlocked country in the South Caucasus region of the Caucasus. The country is geographically located in West Asia, within the Armenian plateau. Armenia is bordered on the north and east by Georgia and Azerbaijan and on the south and west by Iran, Azerbaijan's exclave Nakhchivan, and Turkey.
Ivory Coast is a sub-Saharan nation in southern West Africa located at 8° N, 5° W. The country is approximately square in shape.
With an area of 238,397 km2 (92,046 sq mi), Romania is the twelfth-largest country in Europe. It is a Balkan country located at the crossroads of Eastern and Southeast Europe. It's bordered on the Black Sea, the country is halfway between the equator and the North Pole and equidistant from the westernmost part of Europe—the Atlantic Coast—and the most easterly—the Ural Mountains. Romania has 3,195 kilometres (1,985 mi) of border. Moldova and Ukraine lie to the east, Bulgaria to the south, and Serbia and Hungary to the west by the Pannonian Plain. In the southeast, 245 kilometres (152 mi) of sea coastline provide an important outlet to the Black Sea and the Atlantic Ocean.
The Rhine is one of the major European rivers. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms the Swiss-Liechtenstein border and partly the Swiss-Austrian and Swiss-German borders. After that the Rhine defines much of the Franco-German border, after which it flows in a mostly northerly direction through the German Rhineland. Finally in Germany, the Rhine turns into a predominantly westerly direction and flows into the Netherlands where it eventually empties into the North Sea. It drains an area of 9,973 km2.
The geography of Argentina is heavily diverse, consisting of the Andes Mountains, pampas, and various rivers and lakes. Bordered by the Andes in the west and the South Atlantic Ocean to the east, its neighbouring countries are Chile to the west, Bolivia and Paraguay to the north, and Brazil and Uruguay to the northeast.
The Tumen River, also known as the Tuman River or Duman River, is a 521-kilometre (324 mi) long river that serves as part of the boundary between China, North Korea (right) and Russia (left), rising on the slopes of Mount Paektu and flowing into the Sea of Japan. The river has a drainage basin of 33,800 km2 (13,100 sq mi).
The Red River, or sometimes the Red River of the South to differentiate it from the Red River in the north of the continent, is a major river in the Southern United States. It was named for its reddish water color from passing through red-bed country in its watershed. It is known as the Red River of the South to distinguish it from the Red River of the North, which flows between Minnesota and North Dakota into the Canadian province of Manitoba. Although once a tributary of the Mississippi River, the Red River is now a tributary of the Atchafalaya River, a distributary of the Mississippi that flows separately into the Gulf of Mexico. This confluence is connected to the Mississippi River by the Old River Control Structure.
Borders are generally defined as geographical boundaries, imposed either by features such as oceans and terrain, or by political entities such as governments, sovereign states, federated states, and other subnational entities. Political borders can be established through warfare, colonization, or mutual agreements between the political entities that reside in those areas.
Magdalena is a department of Colombia with more than 1.3 million people, located to the north of the country by the Caribbean Sea. The capital of the Magdalena Department is Santa Marta and was named after the Magdalena River. It inherited the name of one of the original nine states of the United States of Colombia that its current territory integrated.
The Wakhan Corridor is a narrow strip of territory in the Badakhshan province of Afghanistan. This corridor stretches eastward, connecting Afghanistan to Xinjiang, China. It also separates the Gorno-Badakhshan Autonomous Region of Tajikistan in the north from the Khyber Pakhtunkhwa and Gilgit-Baltistan regions of Pakistan in the south, the latter of which is also part of the disputed region of Kashmir. This high mountain valley, which rises to a maximum altitude of 4,923 m (16,152 ft), serves as the source of both the Panj and Pamir rivers, which converge to form the larger Amu Darya River. For countless centuries, a vital trade route has traversed this valley, facilitating the movement of travelers to and from East, South, and Central Asia.
The Narva, formerly also Narwa or Narova, flows 77 kilometres (48 mi) north into the Baltic Sea and is the largest Estonian river by discharge. A similar length of land far to the south, together with it and a much longer intermediate lake, Lake Peipus, all together nowadays form the international border between Estonia and Russia.
The Canada–United States border is the longest international border in the world. The boundary is 8,891 km (5,525 mi) long. The land border has two sections: Canada's border with the contiguous United States to its south, and with the U.S. state of Alaska to its west. The bi-national International Boundary Commission deals with matters relating to marking and maintaining the boundary, and the International Joint Commission deals with issues concerning boundary waters. The agencies responsible for facilitating legal passage through the international boundary are the Canada Border Services Agency (CBSA) and U.S. Customs and Border Protection (CBP).
Border Field State Park is a state park of California, United States, containing beach and coastal habitat on the Mexico–United States border. The park is within the city limits of Imperial Beach in San Diego County, next to the suburb of Playas de Tijuana in Mexico. It contains the southernmost point in the state of California. The refuge forms the southern part of the Tijuana River National Estuarine Research Reserve.
Maritsa or Maritza, also known as Evros and Meriç, is a river that runs through the Balkans in Southeast Europe. With a length of 480 km (300 mi), it is the longest river that runs solely in the interior of the Balkan peninsula, and one of the largest in Europe by discharge. It flows through Bulgaria in its upper and middle reaches, while its lower course forms much of the border between Greece and Turkey. Its drainage area is about 53,000 km2 (20,000 sq mi), of which 66.2% is in Bulgaria, 27.5% in Turkey, and 6.3% in Greece. It is the main river of the historical region of Thrace, most of which lies in its drainage basin.
Though the Republic of Croatia administratively consists of twenty counties, it is traditionally divided into four historical and cultural regions: Croatia proper, Dalmatia, Istria, and Slavonia. These are further divided into other, smaller regions.
The Anglo-Scottish border is an internal border of the United Kingdom separating Scotland and England which runs for 96 miles (154 km) between Marshall Meadows Bay on the east coast and the Solway Firth in the west.
Geology of Colombia refers to the geological composition of the Republic of Colombia that determines its geography. Most of the emerged territory of Colombia covers vast areas within the South American plate, whereas much submerged territory lies within the Caribbean plate and the Nazca plate.
The Oder is a river in Central Europe. It is Poland's second-longest river in total length and third-longest within its borders after the Vistula and its largest tributary Warta. The Oder rises in the Czech Republic and flows 742 kilometres (461 mi) through western Poland, later forming 187 kilometres (116 mi) of the border between Poland and Germany as part of the Oder–Neisse line. The river ultimately flows into the Szczecin Lagoon north of Szczecin and then into three branches that empty into the Bay of Pomerania of the Baltic Sea.
The geology of Armenia was shaped by geological upheaval pushed up the Earth's crust to form the Armenian Plateau 25 million years ago. This created the complex topography of Armenia.
The Myanmar–Thailand border is the international border between the territory of Myanmar and Thailand. The border is 2,416 km (1,501 mi) in length and runs from the tripoint with Laos in the north to the Andaman Sea coast in the south.
