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Bible Encyclopedias
Volga
1911 Encyclopedia Britannica
(known to the Tatars as Etil, DR or Atel; to the Finnish tribes as Rau, and to the ancients as Rha and Oarus), the longest and most important river of European Russia. It rises in the Valdai plateau of Tver and, after a winding course of 2325 m. (1070 in a straight line), falls into the Caspian at Astrakhan: It is by far the longest river of Europe, the x xvriz. 7 Danube, which comes next to it, being only 1775 m., while the Rhine (760 m.) is shorter even than two of the chief tributaries of the Volga - the Oka and the Kama. Its drainage area, which includes the whole of middle and eastern as well as part of south-eastern Russia, amounts to 563,300 sq. m., thus exceeding the aggregate superficies of Germany, France and the United Kingdom, and containing a population of fifty millions. Its tributaries are navigable for an aggregate length of nearly 20,000 m. The "basin" of the Volga is not limited to its actual catchment area. By a system of canals which connect the upper Volga with the Neva, the commercial mouth of the Volga has been transferred, so to speak, from the Caspian to the Baltic, thus making St Petersburg, the capital and chief seaport of Russia, the chief port of the Volga basin as well. Other less important canals connect it with the Western Dvina (Riga) and the White Sea (Archangel); while a railway only 45 m. in length joins the Volga with the Don and the Sea of Azov, and three great trunk lines bring its lower parts into connexion with the Baltic and western Europe.
The Volga rises in extensive marshes on the Valdai plateau, where the W. Dvina also has its origin. Lake Seliger was formerly considered to be the principal source;but that distinction is now given to a small spring issuing beneath a chapel (57° 15' N.; 32° 30' E.) in the midst of a large marsh to the west of Seliger.
The honour has also been claimed, not without plausibility, for the Runa rivulet. Recent exact surveys have shown these originating marshes to be no more than 665 ft. above sea-level. The stream first traverses several small lakes, all having the same level, and, after its confluence with the Runa, enters Lake Volga. A dam erected a few miles below that lake, with a storage of nearly io,000 million cub. ft. of water, makes it possible to raise the level of the Volga as far down as the Sheksna, thus rendering it navigable, even at low water, from its 65th mile onwards.
From its confluence with the Sheksna the Volga flows with a very gentle descent towards the south-east, past Yaroslavl and Kostroma, along a broad valley hollowed to a depth of 150-200 ft. in the Permian and Jurassic deposits. In fact, its course lies through a string of depressions formerly filled with wide lakes, all linked together. When the Volga at length assumes a due south-east direction it is a large river (8250 cub. ft. per second, rising occasionally in high flood to as much as 178,360 cub. ft.); of its numerous tributaries, the Unzha (365 m., 330 navigable), from the north, is the most important.
The next great tributary is the Oka, which comes from the southwest after having traversed, on its course of 950 m., all the Great Russian provinces of central Russia. It rises in the government of Orel, among hills which also send tributaries to the Dnieper and the Don, and receives on the left the Upa, the Zhizdra, the Ugra (300 m.), the Moskva, on which steamers ply up to Moscow, the Klyazma (J95 m.), on whose banks arose the middle-Russian principality of Suzdal, and on the right the navigable Tsna (255 m.) and Moksha. Every one of these tributaries is connected with some important event in the history of Great Russia. The drainage area of the Oka is a territory of 97,000 sq. m. It has been maintained that, of the two rivers which unite at NizhniyNovgorod, the Oka, not the Volga, is the chief; the fact is that both in length (818 m.) and in drainage area above the confluence (89,500 sq. m.), as well as in the aggregate length of its tributaries, the Volga is the inferior stream.
At its confluence with the Oka the Volga enters the broad lacustrine depression which must have communicated with the Caspian during the post-Pliocene period by means of at least a broad strait. Its level at low water is only 190 ft. above that of the ocean. Immediately below the confluence the breadth of the river ranges from 350 to 1750 yds. There are many islands which change their appearance and position after each inundation. On the right the Volga is joined by the Sura, which drains a large area and brings a volume of 2700 to 22,000 cub. ft. of water per second, the Vetluga (465 m. long, of which 365 are navigable), from the forest-tracts of Yaroslavl, and many smaller tributaries. Then the stream turns south-east and descends into another lacustrine depression, where it receives the Kama, below Kazan. Remains of molluscs still extant in the Caspian occur extensively throughout this depression and up the lower Kama.
The Kama,' which brings to the Volga a contribution ranging from 52,500 to 144,400 cub. ft. and occasionally reaching 515,000 cub. ft. per second, might again be considered as the more important of the two rivers. It rises in Vyatka, takes a wide sweep towards the north and east, and then flows south and south-west to join the Volga after a course of no less than 1150 m.