The Rio Negro (Portuguese: Rio Negro, Spanish: Río Negro, actually Black River) is the biggest left-financial institution tributary of the Amazon River and the biggest black-water river withinside the world. This is one of the longest rivers in Venezuela. It's 2,250 km in length.The river originates on the watershed among the Orinoco and the Amazon basin, and is likewise related to the Orinoco River via means of the Casiquiare Canal in southern Venezuela. In Colombia, wherein the Rio Negro originates, the river is known as Guainía. Its one predominant tributary is the Vaupés, which competes with Orinoco's Guaviare, and is the drainage gadget of the jap slopes of the Colombian Andes. The Rio Negro flows to the Rio Solimões and joins the Amazon River south of Manaus, Brazil.

The Rio Negro is navigable seven hundred kilometers from the estuary, with simplest one meter of water withinside the dry season and lots of sandbars and river beds growing positive difficulties. A small part of the river's float paperwork is a phase of the border between Colombia and Venezuela.

During the wet season, floods are regularly lengthy and wide, every so often as much as 30 kilometers (19 mi) wide, and 650 kilometers (four hundred mi) upstream. During this period, from April to October, the river creates a sequence of lagoons, lengthy islands and complex channels inclusive of Santa Isabel do Rio Negro. The foothills of the Andes start simply earlier than attaining the confluence with the Vaupés River. In this place, the Negro River narrows and the water stage rises with many massive rocks and the river flows violently to conquer the rapids and whirlpools. Despite the obstacles, canoe and engine down can pass São Gabriel da Cachoeira to the Andes.

Length: 2,250 km

Orinoco River, Spanish Río Orinoco, most important river of South America that flows in a massive arc 2,140 km from its supply withinside the Guiana Highlands to its mouth at the Atlantic Ocean. Throughout the maximum of its route it flows through Venezuela, besides for a segment that paperwork a part of the frontier among Venezuela and Colombia. The call Orinoco is derived from Warao (Guarauno) phrases meaning “an area to paddle”, a navigable place.

The Orinoco and its tributaries represent the northernmost of South America’s 4 most important river systems. Bordered through the Andes Mountains to the west and the north, the Guiana Highlands to the east, and the Amazon watershed to the south, the river basin covers a place of approximately 366,000 rectangular miles (948,000 rectangular km). It encompasses about 4-fifths of Venezuela and one-fourth of Colombia.

Length: 2,140 km

The Arauca River is a river that rises withinside the Eastern Cordillera in Colombia and flows into the Orinoco River in Venezuela, at the border among the states of Apure and Bolívar. It's 1,050 km in length, ranking third on our list of the longest rivers in Venezuela. It bureaucracy the southern border of the Venezuelan nation of Apure and the northern border of the Colombian branch of Arauca. On its shore is the metropolis of Arauca at the Colombian aspect and El Amparo at the Venezuelan aspect.

It begins off evolving excessive withinside the Andes, withinside the Páramo del Almorzadero at over 4,000 meters (13,000 ft) above sea level. Initially, it's far known as the Chitagá, and it gets inflows from the Carabao and the Cacota, after which twists its route in the direction of the east becoming a member of the Culaga and the Bochaga. Its call then modifications to the Margwa. The Negro, the Colorado, and the San Lorenzo then circulate it.

Length: 1050 km

Apure River is one of the most important tributaries of the Orinoco River. It's 1,038 km in length. The crosses the Venezuelan plains area that bureaucracy the coronary heart of the country. I knew the segment was across the city of San Vicente de Apure. It became March, at some point of the dry season. I suppose it is the quality time to identify animals and birds which can be around there, as they listen close to the water and they may be clean to identify.

Furthermore, there are not as many mosquitoes at some point of the dry season as you frequently can sense a piece crushed with the aid of using them at some point of the moist season. The sunsets over the river are splendid. If you rent the offerings of an awesome Arassari business enterprise which includes Trek, you may pass on safaris.

Length: 1,038 km

The Caroni River is a large river in Venezuela, with a period of 952 km. It is born withinside the Kukenán tepuy with the call of the Kukenán River, and ends at its confluence with the Orinoco River, to whose basin it belongs.

The call Caroní starts for use from the confluence of the Kukenán River and the Yuruaní River, 182 km from the supply of the Kukenán and 770 km from its mouth withinside the Orinoco River.

It is placed withinside the south of Venezuela, withinside the Bolívar state, being the principal tributary of the Orinoco River in phrases of flow. The top basin of the Caroní is placed withinside the Gran Sabana (Canaima National Park), withinside the Venezuelan Guayana, close to the border with Brazil.

Length: 952 km

The Meta River is an extended river of the Colombian Orinoquia, one of the high-quality tributaries of the Orinoco River, which runs via Colombian territory and paperwork a border with Venezuela in its very last segment alongside approximately 220 km. It has a length of 804 km despite the fact that with its assets it exceeds a thousand km, of which 785 are navigable.

It empties into the Orinoco River on the triple border among the Colombian branch of Vichada and the Venezuelan states of Apure and Amazonas. The hydrographic basin of the Meta River has a place of 93,800 km², withinside the higher segment it's miles very wide, extending approximately 4° latitudinal (approximately 350 km), whilst the decrease course, among the Cinaruco River, in Venezuela, to the north, and the Vita River, in Colombia, to the south, is best approximately 90 km.

Length: 804 km

The Caura river, is a tributary of the Orinoco River, positioned in Bolívar State in Venezuela. It's 723 km length. It goes with the drift is the second one after the Caroni River the various affluents of the Orinoco River, with nearly 3,544 cubic meters in keeping with second (125,200 ft/s). The river is inhabited by the Yekuana and Sanema indigenous groups.

The Tacarigua River (generally referred to as the Caura River) is a river on the island of Trinidad. It originates withinside the Northern Range and flows into the Caura Valley. It passes via the city of Tacarigua withinside the East-West Corridor earlier than becoming a member of the Caroni River. The Caura River is crucial both recreationally and culturally.

Length: 723 km

The Cuyuní River is a South American river that could be a tributary of the Essequibo River. It's 618 km in length. It rises withinside the Japanese a part of the Bolívar State of Venezuela and crosses from West to East the complete disputed place, among Venezuela and Guyana, called Guayana Esequiba. In a few sections it serves because the restrict of the disputed territory (which incorporates a massive a part of the Cuyuní River) that is presently occupied and administered with the aid of using the Guyanese State (previously the colony of British Guiana) which has identified the Venezuelan competition of sovereign rights withinside the place consistent with the Geneva Agreement.

It has a basin of 50,347 km², of which approximately 12,192 km² are in Guayana Esequiba. In the Venezuelan a part of its basin it gets the call of Yuruari and gets tributaries, at the left, which might be born with inside the Nuria Plateau, together with the Botanamo; and at the right, rivers that come from the Gran Sabana, together with the Venamo. Shortly earlier than its mouth withinside the Essequibo, it gets the Mazaruni River at the right.

Length: 618 km

The Guárico River is a river in the Central Plains of Venezuela, essential in the system of irrigation reservoirs in the Guárico state for various crops and for the supply of drinking water in Caracas in the Camatagua reservoir. It has a length of 525 km. It originates at an altitude of 770 m in the interior mountain range of the Coastal Range. In its upper section, the Pao and Caramacate rivers flow before forming the Camatagua reservoir.

On its way through the Llanos, it receives the Taguay and Paya rivers, converging at the Guárico reservoir. When leaving the reservoir in Calabozo, its course wanders in meanders below 100 m of altitude, flowing into the Orituco River. In the last part of its route it confuses its waters with spills from the Apure River, taking the place name of Apurito, flowing into the Orinoco River.

The Guárico River Basin is included into the delivery machine of the Metropolitan Region thru the Tuy III, or Camatuy, machine that consists of water from the reservoir to the remedy plant and from there to the Metropolitan Area of Caracas.

Length: 525 km

The Ventuari River is a powerful river in Venezuela's Amazonas state rounding out the list of longest rivers in Venezuela. It has an approximate period of approximately 520 km. It is a tributary of the Orinoco wherein it flows into the vicinity improperly referred to as Delta del Ventuari, which isn't a real river delta, however an outcrop of small rocky hills which can be very proof against erosion, that have been surrounded with the aid of using the waters of the 2 rivers.

Its biggest tributary is the Manapiare River, approximately four hundred km lengthy and with a waft fee nearly as massive as that of the Ventuari River itself. On its beaches is the metropolis of San Juan de Manapiare, the capital of the good sized Manapiare municipality.

Length: 520 km