The Rioni ( ka, რიონი, ; , ) is the main river of western

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

. It originates in the

Caucasus Mountains The Caucasus Mountains, : pronounced * hy, Կովկասյան լեռներ, : pronounced * az, Qafqaz dağları, pronounced * rus, Кавка́зские го́ры, Kavkázskiye góry, kɐfˈkasːkʲɪje ˈɡorɨ * tr, Kafkas Dağla ...

, in the region of

Racha Racha (also Račha, , ''Račʼa'') is a highland area in western Georgia, located in the upper Rioni river valley and hemmed in by the Greater Caucasus mountains. Under Georgia's current subdivision, Racha is included in the Racha-Lechkhumi and ...

and flows west to the Black Sea, entering it north of the city of

Poti Poti ( ka, ფოთი ; Mingrelian: ფუთი; Laz: ჶაში/Faşi or ფაში/Paşi) is a port city in Georgia, located on the eastern Black Sea coast in the region of Samegrelo-Zemo Svaneti in the west of the country. Built near ...

(near ancient Phasis). The city of

Kutaisi Kutaisi (, ka, ქუთაისი ) is one of the List of oldest continuously inhabited cities, oldest continuously inhabited cities in the world and the List of cities and towns in Georgia (country), third-most populous city in Georgia (coun ...

, once the ancient city of

Colchis In Greco-Roman geography, Colchis (; ) was an exonym for the Georgian polity of Egrisi ( ka, ეგრისი) located on the coast of the Black Sea, centered in present-day western Georgia. Its population, the Colchians are generally thoug ...

, lies on its banks. It drains the western Transcaucasus into the Black Sea while the river Kura, drains the eastern Transcaucasus into the

Caspian Sea The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asi ...

History

Ancient authors

Known to the

ancient Greeks Ancient Greece ( el, Ἑλλάς, Hellás) was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity ( AD 600), that comprised a loose collection of cult ...

as the river ''Phasis'', the Rioni was first mentioned by

Hesiod Hesiod (; grc-gre, Ἡσίοδος ''Hēsíodos'') was an ancient Greek poet generally thought to have been active between 750 and 650 BC, around the same time as Homer. He is generally regarded by western authors as 'the first written poet i ...

in his

Theogony The ''Theogony'' (, , , i.e. "the genealogy or birth of the gods") is a poem by Hesiod (8th–7th century BC) describing the origins and genealogies of the Greek gods, composed . It is written in the Epic dialect of Ancient Greek and contains ...

(l.340); Plato has Socrates remark: "I believe that the earth is very large and that we who dwell between the

pillars of Hercules The Pillars of Hercules ( la, Columnae Herculis, grc, Ἡράκλειαι Στῆλαι, , ar, أعمدة هرقل, Aʿmidat Hiraql, es, Columnas de Hércules) was the phrase that was applied in Antiquity to the promontories that flank t ...

and the river Phasis live in a small part of it about the sea, like ants or frogs about a pond" (''

Phaedo ''Phædo'' or ''Phaedo'' (; el, Φαίδων, ''Phaidōn'' ), also known to ancient readers as ''On The Soul'', is one of the best-known dialogues of Plato's middle period, along with the ''Republic'' and the ''Symposium.'' The philosophical s ...

'', 109a). Later writers like

Apollonius Rhodius Apollonius of Rhodes ( grc, Ἀπολλώνιος Ῥόδιος ''Apollṓnios Rhódios''; la, Apollonius Rhodius; fl. first half of 3rd century BC) was an ancient Greek author, best known for the ''Argonautica'', an epic poem about Jason and t ...

(

Argonautica The ''Argonautica'' ( el, Ἀργοναυτικά , translit=Argonautika) is a Greek epic poem written by Apollonius Rhodius in the 3rd century BC. The only surviving Hellenistic epic, the ''Argonautica'' tells the myth of the voyage of Jason a ...

2.12.61),

Virgil Publius Vergilius Maro (; traditional dates 15 October 7021 September 19 BC), usually called Virgil or Vergil ( ) in English, was an ancient Roman poet of the Augustan period. He composed three of the most famous poems in Latin literature: th ...

( Georgics 4.367) and

Aelius Aristides Publius Aelius Aristides Theodorus ( grc-gre, Πόπλιος Αἴλιος Ἀριστείδης Θεόδωρος; 117–181 AD) was a Greek orator and author considered to be a prime example as a member of the Second Sophistic, a group of celeb ...

(''Ad Romam'' 82) considered it the easternmost limit of the

navigable A body of water, such as a river, canal or lake, is navigable if it is deep, wide and calm enough for a water vessel (e.g. boats) to pass safely. Such a navigable water is called a ''waterway'', and is preferably with few obstructions against dir ...

seas.

Herodotus Herodotus ( ; grc, , }; BC) was an ancient Greek historian and geographer from the Greek city of Halicarnassus, part of the Persian Empire (now Bodrum, Turkey) and a later citizen of Thurii in modern Calabria ( Italy). He is known for ha ...

and

Anaximander Anaximander (; grc-gre, Ἀναξίμανδρος ''Anaximandros''; ) was a pre-Socratic Greek philosopher who lived in Miletus,"Anaximander" in ''Chambers's Encyclopædia''. London: George Newnes, 1961, Vol. 1, p. 403. a city of Ionia (in mode ...

considered Rioni a

boundary between Europe and Asia Determining the boundaries between the continents of Earth is generally a matter of geographical convention. Several slightly different conventions are in use. The number of continents is most commonly considered seven (in English-speaking cou ...

. The famed voyage of

Jason Jason ( ; ) was an ancient Greek mythological hero and leader of the Argonauts, whose quest for the Golden Fleece featured in Greek literature. He was the son of Aeson, the rightful king of Iolcos. He was married to the sorceress Medea. He w ...

and the

Argonauts The Argonauts (; Ancient Greek: ) were a band of heroes in Greek mythology, who in the years before the Trojan War (around 1300 BC) accompanied Jason to Colchis in his quest to find the Golden Fleece. Their name comes from their ship, ''Argo'' ...

, though semi-mythological, was said to have occurred by the Argonauts sailing up the river Phasis from its outlet to the Black Sea at Poti, to Colchis (modern

in Georgia).

Pheasant

The term "

pheasant Pheasants ( ) are birds of several genera within the family Phasianidae in the order Galliformes. Although they can be found all over the world in introduced (and captive) populations, the pheasant genera native range is restricted to Eurasi ...

" and the scientific name ''

Phasianus colchicus The common pheasant (''Phasianus colchicus'') is a bird in the pheasant family (Phasianidae). The genus name comes from Latin ''phasianus'', "pheasant". The species name ''colchicus'' is Latin for "of Colchis" (modern day Georgia), a country on ...

'' are derived from "Phasis" and "Colchis", as this was said to be the region from which the common pheasant was introduced to Europe (the

ring-necked pheasant The common pheasant (''Phasianus colchicus'') is a bird in the pheasant family (Phasianidae). The genus name comes from Latin ''phasianus'', "pheasant". The species name ''colchicus'' is Latin for "of Colchis" (modern day Georgia), a country ...

s were introduced later from

East Asia East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea and ...

Draining

It is said that "the failure of Colchis to emerge as a strong kingdom or to be maintained as a province of Rome has been blamed on the pestilential climate of the Phasis Valley, a situation remarked upon by travelers down to modern times, when the swamps were finally drained."

Description

The Rioni is the longest river wholly within the borders of Georgia. The river is long, and its

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the ...

covers about . It starts on the southern slopes of the Caucasus Mountains at above sea level, north of the town

Oni An is a kind of '' yōkai'', demon, orc, ogre, or troll in Japanese folklore. Oni are mostly known for their fierce and evil nature manifested in their propensity for murder and cannibalism. Notwithstanding their evil reputation, oni possess ...

. Its largest tributaries are, from source to mouth:

Jejora The Jejora ( ka, ჯეჯორა) is a river in Racha region of Georgia. It is long, and has a drainage basin of . It is a left tributary of the Rioni. It originates in South Ossetia in the Dvaleti section of the main watershed of the Greater ...

(left), Qvirila (left),

Khanistsqali The Khanistsqali ( ka, ხანისწყალი) is a river of Georgia. It is long, and has a drainage basin of .Tskhenistsqali Tskhenistsqali ( ka, ცხენისწყალი, ''Cxenisċqali'', also: ''Tskhenistskali'') is a river in northern Georgia. Its source is in the main range of the Caucasus Mountains, in the easternmost part of the Lentekhi Municipality, ...

(right) and Tekhuri (right).

Phasis river at Taprobana

Stephanus of Byzantium Stephanus or Stephan of Byzantium ( la, Stephanus Byzantinus; grc-gre, Στέφανος Βυζάντιος, ''Stéphanos Byzántios''; centuryAD), was a Byzantine grammarian and the author of an important geographical dictionary entitled ''Ethni ...

wrote that there was also another river which was named Phasis, in

Taprobana Taprobana ( grc, Ταπροβανᾶ) and Taprobane (, ) was the name by which the Indian Ocean island of Sri Lanka was known to the ancient Greeks. History Reports of the island's existence were known before the time of Alexander the Great ...

( grc, Φᾶσις ἐν τῇ Ταπροβάνῃ) (Ceylon or Sri Lanka).Stephanus of Byzantium, Ethnica, § Ph660.2
/ref>

References

Rivers of Georgia (country) Tributaries of the Black Sea {{Georgia-river-stub