Araguari River (Amapá) on:
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The Araguari River () is the primary river of 
The river flows through the Uatuma-Trombetas moist forests ecoregion.
The river defines the western boundary of the
Amapá
Amapá (; ) is one of the 26 federative units of Brazil, states of Brazil. It is in the North Region, Brazil, North Region of Brazil. It is Federative units of Brazil#List, the second-least populous state and the eighteenth-largest state by area ...
state in north-eastern Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
. It became famous among surfers
Surfing is a surface water sport in which an individual, a surfer (or two in tandem surfing), uses a board to ride on the forward section, or face, of a moving wave of water, which usually carries the surfer towards the shore. Waves suita ...
when some decided to ride its constant tidal bore
A tidal bore, often simply given as bore in context, is a tidal phenomenon in which the leading edge of the incoming tide forms a wave (or waves) of water that travels up a river or narrow bay, reversing the direction of the river or bay's cu ...
, characterizing waves that can last for several minutes. In 2013, three dams were built in the river to generate hydroelectricity
Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...
. The dams ended the tidal bore which altered the flow of water in the Amazon, and caused significant land erosion and damage to the Bailique Archipelago.
The river flows through the Uatuma-Trombetas moist forests ecoregion.
The river defines the western boundary of the Amapá National Forest
The Amapá National Forest () is a national forest in the state of Amapá, Brazil. It supports sustainable exploitation of the natural resources in an area of Amazon rainforest in the Guiana Shield.
Location
The Amapá National Forest is divide ...
, a sustainable use conservation unit created in 1989.
See also
* List of rivers of AmapáReferences
Rivers of Amapá {{AmapáBR-river-stub