Casiquiare canal

Casiquiare canal
Map of the Cassiquiare canal based on Alexander von Humboldt, 1799 observations
Location of the Casiquiare (highlighted in purple) within the Amazon Basin
Location
CountryVenezuela
Physical characteristics
SourceOrinoco River
 • coordinates3°8′18″N 65°52′49″W / 3.13833°N 65.88028°W / 3.13833; -65.88028
 • elevation110 m (360 ft)
MouthRio Negro
 • coordinates
2°0′5″N 67°5′54″W / 2.00139°N 67.09833°W / 2.00139; -67.09833
 • elevation
79 m (259 ft)
Length340 km (210 mi)
Basin size42,478 km2 (16,401 mi2)
Discharge 
 • locationAmazonas, Venezuela (near mouth)
 • average2,574.3 m3/s (90,910 cu ft/s)
Basin features
Tributaries 
 • rightSiapa, Yatua

The Casiquiare river or canal (Spanish pronunciation: [kasiˈkjaɾe]) is a natural distributary of the upper Orinoco flowing southward into the Rio Negro in Venezuela. As such, it forms a unique natural canal between the Orinoco and Amazon river systems. It is the world's largest river of the kind that links two major river systems, a so-called bifurcation. The area forms a water divide, more dramatically at regional flood stage.