River
Casiquiare canal
326 km from source to mouth · Venezuela.
VenezuelaFlows into Rio Negro8th longest in Venezuela
In numbers
Length
326km
Average flow
2,400m³/s
Basin
42,300km²
Drop
390m
from 471 m to 81 m
Country
1
The journey
From source to mouth
326 km of river and 0 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmOrinoco Riverat 471 m
- 326 kmRio Negroat 81 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Venezuela
At the mouth it carries 2,387 m³/s on average: an Olympic pool every 1.0 seconds. It drops from 471 m to 81 m, 1.2 m per kilometre on average. Its basin covers 42,300 km², about the size of NL. 3,738 people live in it. Highest water: from June to July. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- San Carlos de Río NegroA town on its banks
- São Gabriel da Cachoeira Airport (SJL)Nearest airport with scheduled flights, 230 km from the city
- From January to February and from May to JulyThe best months to visit
Casiquiare canal, month by month
Highest water: from June to July
Best months to visit: from January to February and from May to July.
From about 1,800 m³/s in the lowest month to 3,600 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
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The basin
Casiquiare canal: the basin in numbers
42,478 km² of land send their water to this river. This is what lives on it.
- 3,738people live in the basin
- 0/km²people per km²
- 309maverage altitude of the basin
- 2,968mmof rain a year (basin average)
- 25.7°Caverage air temperature
- 84%protected areas
What covers the basin
- 91% Forest
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
From space
The source and the mouth, seen from orbit
Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Tributaries
Where it flows, and what flows into it
It flows into
Rio Negro
Brazil2,250 km30,000 m³/sTributaries (1)
In the same basin
Brazil6,400 km209,000 m³/sMadeira RiverBrazil1,450 km31,200 m³/sMarañón River
Peru1,737 km16,700 m³/sUcayali RiverPeru1,460 km12,600 m³/sJapurá RiverBrazil2,820 km13,900 m³/sXingu RiverBrazil1,640 km9,700 m³/sMamoré RiverBrazil1,930 km11,600 m³/sJuruá RiverBrazil3,100 km4,800 m³/sTapajós RiverBrazil1,930 km13,000 m³/sPutumayo RiverBrazil1,610 km7,000 m³/s
ColombiaWhere these numbers come from
| Name, length, places | Wikidata (Q331455) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every source and licence is on the data sources page.
The family
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