These set of beautiful images depict a conflux.. According to hydrology,a confluence is the meeting point of two or more rivers,its can be also be described as the place where a river join another river to form a source region.
Confluence of the rhone and alve river in Geneva,Switzerland.
Source
Confluence of mosel and rhine river in koblenz, Germany
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Confluence of the thompson and fraser river in Lytton, BC, Canada
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Online Reference
http://twistedsifter.com/2012/04/confluences-around-the-world/
Hydrology is beautiful
Hydrology is interesting
Hydrology is life