This is a list of the oldest rivers on Earth.

Definition of age

The age of a river is hard to determine. It depends on which mountains are the source of the river, which mountains it has dissected during the geologic times, and in which sea or ocean it outflows eventually and where it forms its delta.

Each of these factors can make a final contribution in determining the age of a river.

List of rivers older than 1 Ma

Below follows a list of rivers older than 1 Ma (one million years = 1,000,000 years).

Continent Continent A continent is one of several very large landmasses on Earth. They are generally identified by convention rather than any strict criteria, with seven regions commonly regarded as continents—they are : Asia, Africa, North America, South America, Antarctica, Europe, and Australia.Plate tectonics is...  color key Africa Geography of Africa Africa is a continent comprising 62 political territories, representing the largest of the great southward projections from the main mass of Earth's surface... Asia Geography of Asia Geography of Asia reviews geographical concepts of classifying Asia, the central and eastern part of Eurasia, comprising approximately fifty countries.-Boundary:... Oceania Geography of Oceania As an ecozone, Oceania includes all of Micronesia, Fiji, and all of Polynesia except New Zealand. New Zealand, along with New Guinea and nearby islands, Australia, the Solomon Islands, Vanuatu, and New Caledonia, constitute the separate Australasia ecozone... Europe Geography of Europe Europe is traditionally reckoned as one of seven continents. Physiographically, however, it is the northwestern peninsula of the larger landmass known as Eurasia : Asia occupies the eastern bulk of this continuous landmass and all share a common continental shelf... North America Geography of North America North America is the third largest continent, or a portion of the second largest if North and South America are combined into the Americas and Africa, Europe and Asia are considered to be part of one supercontinent called Afro-Eurasia... South America Geography of South America The geography of South America contains many diverse regions and climates. Geographically, South America is generally considered a continent forming the southern portion of the American landmass, south and east of the Panama-Colombia border by most authorities, or south and east of the Panama Canal...

	River River A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...	Age (Ma)	Outflow	Most significant criterium for the age
1.	Meuse River Meuse River The Maas or Meuse is a major European river, rising in France and flowing through Belgium and the Netherlands before draining into the North Sea...	380	North Sea North Sea In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...	Paleozoic Paleozoic The Paleozoic era is the earliest of three geologic eras of the Phanerozoic eon, spanning from roughly... , dissects the Ardennes during the Hercynian
2.	Yangtze Yangtze River The Yangtze, Yangzi or Cháng Jiāng is the longest river in Asia, and the third-longest in the world. It flows for from the glaciers on the Tibetan Plateau in Qinghai eastward across southwest, central and eastern China before emptying into the East China Sea at Shanghai. It is also one of the... (Chang Jiang)	350	East China Sea East China Sea The East China Sea is a marginal sea east of China. It is a part of the Pacific Ocean and covers an area of 1,249,000 km² or 750,000 square miles.-Geography:...	Crosses Paleozoic and Mesozoic mountains
3.	New River (Kanawha River)	300	Atlantic Ocean Atlantic Ocean The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...	Dissects the Appalachian Mountains Appalachian Mountains The Appalachian Mountains #Whether the stressed vowel is or ,#Whether the "ch" is pronounced as a fricative or an affricate , and#Whether the final vowel is the monophthong or the diphthong .), often called the Appalachians, are a system of mountains in eastern North America. The Appalachians...
4.	Nile Nile The Nile is a major north-flowing river in North Africa, generally regarded as the longest river in the world. It is long. It runs through the ten countries of Sudan, South Sudan, Burundi, Rwanda, Democratic Republic of the Congo, Tanzania, Kenya, Ethiopia, Uganda and Egypt.The Nile has two major...	250	Mediterranean Sea Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...	Mesozoic Mesozoic The Mesozoic era is an interval of geological time from about 250 million years ago to about 65 million years ago. It is often referred to as the age of reptiles because reptiles, namely dinosaurs, were the dominant terrestrial and marine vertebrates of the time...
5.	Rhine	240	North Sea North Sea In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...	Triassic Triassic The Triassic is a geologic period and system that extends from about 250 to 200 Mya . As the first period of the Mesozoic Era, the Triassic follows the Permian and is followed by the Jurassic. Both the start and end of the Triassic are marked by major extinction events... , maybe older because of the Hercynian; not the Eocene Eocene The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...  with the Alps Alps The Alps is one of the great mountain range systems of Europe, stretching from Austria and Slovenia in the east through Italy, Switzerland, Liechtenstein and Germany to France in the west.... , nor the Miocene Miocene The Miocene is a geological epoch of the Neogene Period and extends from about . The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words and and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene...  with the Upper Rhine Graben Upper Rhine Graben The Upper Rhine Plain, Rhine Rift Valley or Upper Rhine Graben is a major rift, straddling the border between France and Germany. It forms part of the European Cenozoic Rift System, which extends across central Europe...
6.	Amazon Amazon River The Amazon of South America is the second longest river in the world and by far the largest by waterflow with an average discharge greater than the next seven largest rivers combined...	200	Atlantic Ocean Atlantic Ocean The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...	Jurassic Jurassic The Jurassic is a geologic period and system that extends from about Mya to  Mya, that is, from the end of the Triassic to the beginning of the Cretaceous. The Jurassic constitutes the middle period of the Mesozoic era, also known as the age of reptiles. The start of the period is marked by... , but it seems to have flown in the opposite direction as an extension of the Congo, i.e. long before the formation of Andes Andes The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...
7.	Colorado Colorado River The Colorado River , is a river in the Southwestern United States and northwestern Mexico, approximately long, draining a part of the arid regions on the western slope of the Rocky Mountains. The watershed of the Colorado River covers in parts of seven U.S. states and two Mexican states...  (western U.S.)	75	Gulf of California Gulf of California The Gulf of California is a body of water that separates the Baja California Peninsula from the Mexican mainland...	Uplift during Laramide orogeny Laramide orogeny The Laramide orogeny was a period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the orogeny are in dispute, as is the cause. The Laramide... , see Geology of the Grand Canyon area Geology of the Grand Canyon area The geology of the Grand Canyon area exposes one of the most complete and studied sequences of rock on Earth. The nearly 40 major sedimentary rock layers exposed in the Grand Canyon and in the Grand Canyon National Park area range in age from about 200 million to nearly 2 billion years old...
8.	Thames	58	North Sea North Sea In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...	Late Palaeocene Period Thanetian Stage.
9.	Indus Indus River The Indus River is a major river which flows through Pakistan. It also has courses through China and India.Originating in the Tibetan plateau of western China in the vicinity of Lake Mansarovar in Tibet Autonomous Region, the river runs a course through the Ladakh district of Jammu and Kashmir and... (Sindhu)	45	Arabian Sea Arabian Sea The Arabian Sea is a region of the Indian Ocean bounded on the east by India, on the north by Pakistan and Iran, on the west by the Arabian Peninsula, on the south, approximately, by a line between Cape Guardafui in northeastern Somalia and Kanyakumari in India...	Source in the Himalayas Himalayas The Himalaya Range or Himalaya Mountains Sanskrit: Devanagari: हिमालय, literally "abode of snow"), usually called the Himalayas or Himalaya for short, is a mountain range in Asia, separating the Indian subcontinent from the Tibetan Plateau...  and Karakoram Mountains