Putumayo River
Encyclopedia
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...
is one of the tributaries
Tributary
A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...
of the Amazon River
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...
, west of and parallel to the Yapura. It forms part of Colombia
Colombia
Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...
's border with Ecuador
Ecuador
Ecuador , officially the Republic of Ecuador is a representative democratic republic in South America, bordered by Colombia on the north, Peru on the east and south, and by the Pacific Ocean to the west. It is one of only two countries in South America, along with Chile, that do not have a border...
, as well as most of the frontier with Peru
Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....
. Known as the Putumayo in the former three nations, it is called the Içá when it crosses into Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...
.
In the late 19th century, the Içá was navigated by the French explorer Jules Crevaux (1847–1882). He ascended it in a steamer drawing 6 feet (1.8 m) of water, and running day and night. He reached Cuemby, 800 miles (1,287.5 km) above its mouth, without finding a single rapid
Rapid
A rapid is a section of a river where the river bed has a relatively steep gradient causing an increase in water velocity and turbulence. A rapid is a hydrological feature between a run and a cascade. A rapid is characterised by the river becoming shallower and having some rocks exposed above the...
. Cuemby is only 200 miles (321.9 km) from the Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
, in a straight line, passing through the town of Pasto
Pasto
Pasto, officially San Juan de Pasto, is the capital of the department of Nariño, located in southwest Colombia. The city is located in the "Atriz Valley", on the Andes cordillera, at the foot of the Galeras volcano, at an altitude of 8,290 feet above sea level...
in southern Colombia
Colombia
Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...
. Creveaux discovered the river sediments to be free of rock to the base of the 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...
; the river banks were of argillaceous
Clay
Clay is a general term including many combinations of one or more clay minerals with traces of metal oxides and organic matter. Geologic clay deposits are mostly composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure.- Formation :Clay minerals...
earth and the bottom of fine sand
Sand
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.The composition of sand is highly variable, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal...
.
Today the river is a major transport
Transport
Transport or transportation is the movement of people, cattle, animals and goods from one location to another. Modes of transport include air, rail, road, water, cable, pipeline, and space. The field can be divided into infrastructure, vehicles, and operations...
route. Almost the entire length of the river is navigated by boat
Boat
A boat is a watercraft of any size designed to float or plane, to provide passage across water. Usually this water will be inland or in protected coastal areas. However, boats such as the whaleboat were designed to be operated from a ship in an offshore environment. In naval terms, a boat is a...
s.
Cattle
Cattle
Cattle are the most common type of large domesticated ungulates. They are a prominent modern member of the subfamily Bovinae, are the most widespread species of the genus Bos, and are most commonly classified collectively as Bos primigenius...
farming, along with the rubber trade, is also a major industry on the banks of the Içá. Rubber and balatá
Balatá
Manilkara bidentata is a species of Manilkara native to a large area of northern South America, Central America and the Caribbean. Common names include balatá, ausubo, massaranduba, and "cow-tree"....
(a substance very much like gutta-percha
Gutta-percha
Gutta-percha is a genus of tropical trees native to Southeast Asia and northern Australasia, from Taiwan south to the Malay Peninsula and east to the Solomon Islands. The same term is used to refer to an inelastic natural latex produced from the sap of these trees, particularly from the species...
, to the point where it is often called gutta-balatá) from the Içá area are shipped to Manaus
Manaus
Manaus is a city in Brazil, the capital of the state of Amazonas. It is situated at the confluence of the Negro and Solimões rivers. It is the most populous city of Amazonas, according to the statistics of Brazilian Institute of Geography and Statistics, and is a popular ecotourist destination....
, Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...
.
On March 1, 2008, Raúl Reyes
Raúl Reyes
Luis Edgar Devia Silva , better known by his nom de guerre Raúl Reyes, was a Secretariat member, spokesperson, and advisor to the Southern Bloc of the Revolutionary Armed Forces of Colombia-EP...
and 14 of his fellow Revolutionary Armed Forces of Colombia
Revolutionary Armed Forces of Colombia
The Revolutionary Armed Forces of Colombia – People's Army is a Marxist–Leninist revolutionary guerrilla organization based in Colombia which is involved in the ongoing Colombian armed conflict, currently involved in drug dealing and crimes against the civilians..FARC-EP is a peasant army which...
guerrilla companions were killed while on the Ecuadorian side of the border by Colombian military forces
Military of Colombia
The Military Forces of Colombia are the armed forces of the Republic of Colombia.-Services:The Military of Colombia consists of:* National Army of Colombia * Colombian National Armada - Marines, Navy and Coast Guard attached* Colombian Air Force...
.