Psou
The Psou (; ; ; ) is a river in the West Caucasus, bordering the Gagra Range of Abkhazia to the east. It flows along the southern slopes of the Greater Caucasus Mountain Range and forms a part of the border between Abkhazia and Russia. Its source in the Aigra Mountain, and it flows into the Black Sea. The Psou is long, and the drainage basin is approximately . Between the mouth of the river and the mouth of the Mzymta is a "sandy depositional foreland", which is approximately in length and wide.

The principal tributaries of the Psou are the Besh and the Pkhista. Between 1913 and 1955 there was a hydrological station in operation at Leselidze, roughly upstream of the river mouth.
The Psou gained notoriety as a smuggling route out of the country, by-passing Russian controls on the border. As of 2008 it was still designated as a transboundary river which lacked an international cooperation agreement as part of the UNECE Water Convention.
Q834521
West Caucasus
LOC
Q615617
Gagra Range
LOC
Q486986
Greater Caucasus
LOC
Q3088939
border
Concept
Q31354462
Abkhazia
ORG
Q159
Russia
LOC
Q166
Black Sea
LOC
Q166620
drainage basin
Concept
Q1364317
Mzymta
LOC
None
Besh
UNK
Q24686610
Pkhista
Concept
Q475259
Leselidze
LOC
Q501454
Psou
LOC
Q501454
Psou
LOC
Q501454
Psou
LOC
Q501454
Psou
LOC
1913-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1913
DATE
1955-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1955
DATE
2008-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2008
DATE
origin of the watercourse
basin country
basin country
mouth of the watercourse
country
country
diplomatic relation
shares border with