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The Daugava ( ltg, Daugova; german: Düna) or Western Dvina (russian: Западная Двина, translit=Západnaya Dviná; be, Заходняя Дзвіна; et, Väina; fi, Väinäjoki) is a large river rising in the Valdai Hills of Russia that flows through Belarus and
Latvia Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...
into the Gulf of Riga of the Baltic Sea. It rises close to the source of the Volga. It is in length, of which are in Latvia and are in Russia. It is a westward-flowing river, tracing out a great south-bending curve as it passes through northern Belarus. Latvia's capital,
Riga Riga (; lv, Rīga , liv, Rīgõ) is the capital and largest city of Latvia and is home to 605,802 inhabitants which is a third of Latvia's population. The city lies on the Gulf of Riga at the mouth of the Daugava river where it meets the Ba ...
, bridges the river's estuary four times. Built on both riverbanks, the city centre is from the river's mouth and is a significant port.


Geography

The total catchment area of the river is , of which are within Belarus.


Tributaries

The following rivers are tributaries to the river Daugava (from source to mouth): *Left: Mezha, Kasplya, Dysna, Laucesa *Right: Usvyacha, Palata, Drysa, Dubna, Aiviekste, Pērse, Ogre


Etymology

According to Max Vasmer's ''Etymological Dictionary'', the toponym Dvina cannot stem from a Uralic language; instead, it possibly comes from an Indo-European word which used to mean ''river'' or ''stream''. The name ''Dvina'' resembles strongly '' Danuvius'' which itself derived from the Proto-Indo-European ''*dānu'', meaning "large river". The Finno-Ugric names ( Livonian), (
Estonian Estonian may refer to: * Something of, from, or related to Estonia, a country in the Baltic region in northern Europe * Estonians, people from Estonia, or of Estonian descent * Estonian language * Estonian cuisine * Estonian culture See also

...
), and ( Finnish) all stem from Proto-Finnic ''*väin'', meaning "a large, peacefully rolling river".


History

Humans have settled at the mouth of the Daugava and along the shores of the Gulf of Riga for millennia, initially participating in a hunter-gatherer economy and utilizing the waters of the Daugava estuary for fishing and gathering. Beginning around the sixth century CE, Viking explorers crossed the Baltic Sea and entered the Daugava River, navigating upriver into the Baltic interior. In medieval times, the Daugava was part of the trade route from the Varangians to the Greeks, an important route for the transport of furs from the north and of Byzantine silver from the south. The Riga area, inhabited by the Finnic-speaking
Livs The Livonians, or Livs ( Livonian: ''līvlizt''; Estonian: ''liivlased''; Latvian: ''līvi'', ''lībieši''), are a Balto-Finnic people indigenous to northern and northwestern Latvia. Livonians historically spoke Livonian, a Uralic language ...
, became a key location of settlement and defence of the mouth of the Daugava at least as early as the Middle Ages, as evidenced by the now destroyed fort at
Torņakalns Torņakalns is a neighbourhood of Riga, Latvia located on the western bank of the Daugava River (neighbourhoods along this shore are collectively known as Pārdaugava). The name Torņakalns ('' English: Tower Hill'') derives from a fortified ...
on the west bank of the Daugava in present-day Riga. Since the Late Middle Ages, the western part of the Daugava basin has come under the rule of various peoples and states; for example, the Latvian town of
Daugavpils Daugavpils (; russian: Двинск; ltg, Daugpiļs ; german: Dünaburg, ; pl, Dyneburg; see other names) is a state city in south-eastern Latvia, located on the banks of the Daugava River, from which the city gets its name. The parts of the c ...
variously came under
papal The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...
, Slavonic, Polish, German, and Russian rule until the restoration of the Latvian independence in 1990 at the end of the Cold War.


Settlements

The following are select cities and towns built along the Daugava:


Russia


Belarus


Latvia


Environment

The river began experiencing environmental deterioration in the Soviet era due to collective agriculture (producing considerable adverse water pollution runoff) and hydroelectric power projects.


Water quality

Upstream of the Latvian town of Jekabpils, the river's pH has a characteristic value of about 7.8 (slight
alkaline In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a base (chemistry), basic, ionic compound, ionic salt (chemistry), salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as ...
). In this area, the concentration of ionic calcium is around 43 milligrams per liter,
nitrate Nitrate is a polyatomic ion A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zer ...
is about 0.82 milligrams per liter, ionic phosphate is 0.038 milligrams per liter, and oxygen saturation is 80%. The high nitrate and phosphate load of the Daugava has contributed to the extensive buildup of phytoplankton biomass in the Baltic Sea; the
Oder The Oder ( , ; Czech, Lower Sorbian and ; ) is a river in Central Europe. It is Poland's second-longest river in total length and third-longest within its borders after the Vistula and Warta. The Oder rises in the Czech Republic and flows thr ...
and Vistula rivers also contribute to the high nutrient loading of the Baltic. In Belarus, water pollution of the Daugava is considered moderately severe, with the chief sources being treated wastewater, fish-farming, and agricultural chemical runoff (such as herbicides, pesticides, nitrates, and phosphates).


References


Further reading

* *Francis W. Carter and David Turnock. 2002. Environmental problems of East Central Europe. 442 pages Google eBook *


External links


Daugava River photos
at flickr {{Authority control International rivers of Europe Rivers of Belarus Rivers of Latvia Gulf of Riga Rivers of Smolensk Oblast Rivers of Tver Oblast Rivers of Vitebsk Region Belarus–Latvia border