
The Weser () is a
river
A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...
of
Lower Saxony
Lower Saxony is a States of Germany, German state (') in Northern Germany, northwestern Germany. It is the second-largest state by land area, with , and fourth-largest in population (8 million in 2021) among the 16 ' of the Germany, Federal Re ...
in north-west
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
. It begins at
Hannoversch Münden through the
confluence
In geography, a confluence (also ''conflux'') occurs where two or more watercourses join to form a single channel (geography), channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main ...
of the
Werra and
Fulda. It passes through the
Hanseatic city of
Bremen. Its mouth is further north against the ports of
Bremerhaven and
Nordenham. The latter is on the
Butjadingen Peninsula. It then merges into the
North Sea
The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Se ...
via two highly
saline,
estuarine mouths.
It connects to the canal network running east–west across the
North German Plain.
The river, when combined with the Werra (a dialectal form of ''Weser''), is long and thus, the longest river entirely situated within Germany (the
Main, however, is the longest if the Weser-Werra are considered separate). The Weser itself is long. The Werra rises in
Thuringia
Thuringia (; officially the Free State of Thuringia, ) is one of Germany, Germany's 16 States of Germany, states. With 2.1 million people, it is 12th-largest by population, and with 16,171 square kilometers, it is 11th-largest in area.
Er ...
, the
German state south of the main projection (tongue) of Lower Saxony.
Etymology
"Weser" and "Werra" are the same words in different dialects. The difference reflects the old
linguistic border between
Central and
Low German
Low German is a West Germanic languages, West Germanic language variety, language spoken mainly in Northern Germany and the northeastern Netherlands. The dialect of Plautdietsch is also spoken in the Russian Mennonite diaspora worldwide. "Low" ...
, passing through Hannoversch Münden.
The name likely derives from the Old Germanic ''*waisōn'' "flow, ooze".
It is cognate with the
Wear
Wear is the damaging, gradual removal or deformation of material at solid surfaces. Causes of wear can be mechanical (e.g., erosion) or chemical (e.g., corrosion). The study of wear and related processes is referred to as tribology.
Wear in ...
in England and
Vistula
The Vistula (; ) is the longest river in Poland and the ninth-longest in Europe, at in length. Its drainage basin, extending into three other countries apart from Poland, covers , of which is in Poland.
The Vistula rises at Barania Góra i ...
(Polish Wisła, German Weichsel) in Poland, all of which are derived from the
Proto-Indo-European
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. No direct record of Proto-Indo-European exists; its proposed features have been derived by linguistic reconstruction from documented Indo-Euro ...
root
*''weys-'' "to flow", which also gives rise to Old English/Old Frisian ''wāse'' "mud, ooze", Old Norse ''veisa'' "slime, stagnant pool", Dutch ''waas'' "haze; soggy land" (see
Waasland), Old Saxon ''waso'' "wet ground, mire", Old High German ''wasal'' "rain", and French ''vase'' "mud, sludge".
Course
The Weser starts at the confluence of the Fulda and the Werra. It then runs down to the
Porta Westfalica between two high hill ranges, the
Wiehengebirge in the west and the
Weserbergland in the east.
Between
Minden
Minden () is a middle-sized town in the very north-east of North Rhine-Westphalia, Germany, the largest town in population between Bielefeld and Hanover. It is the capital of the district () of Minden-Lübbecke, situated in the cultural region ...
and the North Sea, humans have
largely canalised the river up to a limit of 1,200-ton ships. Eight hydroelectric dams stand at the ends of adjacent weir weirstreams that make up the river. The navigation is linked west to the
Dortmund–Ems Canal via the
Coastal Canal. It is linked east at
Bremerhaven to the
Elbe
The Elbe ( ; ; or ''Elv''; Upper Sorbian, Upper and , ) is one of the major rivers of Central Europe. It rises in the Giant Mountains of the northern Czech Republic before traversing much of Bohemia (western half of the Czech Republic), then Ge ...
.
A large reservoir, the
Edersee, on the
Eder, the main tributary of the Fulda, is used to allow enough water depth for shipping year-round. The dam, built in 1914, was
bombed and severely damaged by British aircraft in May 1943, causing great destruction and about 70 deaths downstream. It was rebuilt within four months. The reservoir is a major summer resort area. Turbines driven by its
sluices provide electricity.
Weserradweg b Oedelsheim.jpg, "Upper" Weser, in reality the central section between the upper courses Werra and Fulda, and the lowland section
Minden Weser-Mittelland Kanal Lock 01.jpg, Mittelland Canal
The Mittelland Canal, also known as the Midland Canal, (, ) is a major canal in central Germany. It forms an important link in the waterway network of the country, providing the principal east-west inland waterway connection. Its significanc ...
/River Weser Lock in Minden taken in 1977
MI-16 River Weser (Minden) North (RLH).jpg, View north of the River Weser and the road bridge at Minden
River Weser (Minden) South To Porta West Falica (RLH).jpg, Southern view of the River Weser from the road bridge at Minden in 1977
The Weser enters the North Sea in the southernmost part of the
German Bight. In the sea it splits into two arms –the riverbed at the end of the
last ice age. These sea arms are called ''Alte Weser'' (old Weser) and ''Neue Weser'' (new Weser). They are the waterways for ships heading for the ports of
Bremerhaven,
Nordenham, and
Bremen
Bremen (Low German also: ''Breem'' or ''Bräm''), officially the City Municipality of Bremen (, ), is the capital of the States of Germany, German state of the Bremen (state), Free Hanseatic City of Bremen (), a two-city-state consisting of the c ...
. The
Alte Weser Lighthouse marks the northernmost point of the Weser. This replaced the
Roter Sand Lighthouse in 1964.
Tributaries
The largest tributary of the Weser is the
Aller, which joins south of Bremen. Tributaries of the Weser and the Werra (from source to mouth) are:
Modes of the list:
* Listed upstream, but sides seen with the flow
* Distances ("km …") from the hydrographical limit towards the sea
** "II", "III"and "IV" mark distances of secondary/tertiary tributaries from the confluence with the Weser etc.
* After the names, lengths and basin sizes are given.
* Lengths with longer affluents are given behind the slash lengths including an upper course with another name with "or"

List:
* km 19, right:
Geeste (in Bremerhaven), 42.5 km, 338 km
2
* km 33, right:
Lune
Lune may refer to:
Rivers
*River Lune, in Lancashire and Cumbria, England
*River Lune, Durham, in County Durham, England
*Lune (Weser), a 43 km-long tributary of the Weser in Germany
*Lune River (Tasmania), in south-eastern Tasmania, Australia
Pl ...
, 43 km, 383 km
2
* km 35.9, right:
Drepte, 37.6 km, 101 km
2
* km 52.8, left:
Hunte
Hunte () is a long river in north-western Germany (Lower Saxony), a left tributary of the Weser.
The Hunte rises in the Wiehen Hills. In the North German Plain it flows through lake Dümmer. It flows generally northwards through the towns B ...
, 189 km, 2.785 km
2
** II: km 125.7: Lake
Dümmer
* km 67.6, right:
Lesum, 9.9 or 131.5, 2,188 km
2
** II: km 9.9, right
Hamme, 48.5 km, 549 km
2
**↑ main stream:
Wümme, 118 / 120, 1,585 km
2
* km 72.5, left:
Ochtum, 25.6 or 45 km, 917 km
2
** II: km 25.6: left
Hache, 33 km, 118 km
2
* km 125.6, right:
Aller, 260 km, 15,744 km
2
** II: km 63.6, left:
Leine, 278 km, 5,617 km
2, stronger than river Aller above
*** III: km 112.7, right:
Innerste, 99.7 km, 1,264 km
2
*** III: km 192.8, right:
Rhume, 44 km, 1,193 km
2, stronger than river Leine above
*** IV: km 15.6, right:
Oder, 56 km, 385 km
2, headwater of the strongest waterway of Aller system
** II: km 97.3, right:
Örtze, 62 / 70 km, 760 km
2
** II: km 140.7, left:
Oker, 218 km, 1822 km
2, stronger than river Aller above
* km 184.6, right: Steinhuder Meerbach
** ↑ km II: 29 lake
Steinhuder Meer
* km 188.7, left:
Große Aue
The Große Aue (in its upper reaches known as the ''Aue'' and then also the ''Neuer Mühlenbach'' or ''Mühlbach'') is an , southwestern, left tributary of the River Weser in northern North Rhine-Westphalia and central Lower Saxony in Germany.
...
, 84.5 km, 1,522 km
2
* km 261.3, left:
Werre, 71.9 km, 1485 km
2
** II: km 12.7, left:
Else, 34.6 km, 416 km
2, branch of the
Hase, an affluent of
Ems
* km 287.7, left:
Exter, 26.1 km, 109 km
2
* km 323.3, left:
Emmer, 61.8 km, 535 km
2
* km 387.5, left:
Nethe, 50.4 km, 460 km
2
* km 406.5, left:
Diemel, 110.5 km, 1,762 km
2
* km 451.5, left:
Fulda, 220.4 km, 6.947 km
2
:: II: km 45.3, left:
Eder, 176.1 km, 3,361 km
2, headwater of the strongest waterway of Weser system
::: III: km 17.1, left:
Schwalm, 97.1 km, 1.299 km
2
::: ↑ III: km 49.4–70.5:
Edersee reservoir
:: II: 120.1, right:
Haune
The Haune is a 67 km long river in Hesse, Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixte ...
, 66.5 km, 500 km
2
* ↑ main stream above km 451.5:
Werra, 299.6 km, 5.497 km
2
* km 566.5, right:
Hörsel, 55.2 or 64.3, 784 km
2
** km 9.8, right:
Nesse, 54.5 km, 426 km
2
* km 513.1, left:
Ulster
Ulster (; or ; or ''Ulster'') is one of the four traditional or historic provinces of Ireland, Irish provinces. It is made up of nine Counties of Ireland, counties: six of these constitute Northern Ireland (a part of the United Kingdom); t ...
, 57.2 km, 421 km
2
* km 604.4, right:
Schleuse, 34.2 km, 283 km
2
Notable towns
Main towns along the Weser are (from the head of the river to its mouth):
Hann. Münden,
Beverungen,
Höxter,
Holzminden,
Bodenwerder,
Hamelin
Hameln ( ; ) is a town on the river Weser in Lower Saxony, Germany. It is the capital of the district of Hameln-Pyrmont and has a population of roughly 57,000. Hamelin is best known for the tale of the Pied Piper of Hamelin.
History
Hameln ...
,
Hessisch Oldendorf,
Rinteln,
Vlotho,
Bad Oeynhausen,
Porta Westfalica,
Minden
Minden () is a middle-sized town in the very north-east of North Rhine-Westphalia, Germany, the largest town in population between Bielefeld and Hanover. It is the capital of the district () of Minden-Lübbecke, situated in the cultural region ...
,
Petershagen,
Nienburg,
Achim
Achim (; Northern Low Saxon: ''Achem''), commonly Achim bei Bremen, is a municipality and the largest town (population 30,059 in December 2006) in the district of Verden, in Lower Saxony, Germany. It is situated on the right bank of the Weser, a ...
,
Bremen,
Brake
A brake is a machine, mechanical device that inhibits motion by absorbing energy from a moving system. It is used for Acceleration, slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of ...
,
Nordenham, and
Bremerhaven.
Popular culture
The river features in the legend and folk tale the
Pied Piper of Hamelin.
References
Etymology
* Dieter Berger: ''Geographische Namen in Deutschland''. Duden-Verlag, Mannheim 1999.
* Hans Krahe: ''Sprache und Vorzeit''. Quelle & Meyer, Heidelberg 1954. (''Zur alteuropäischen Hydronomie''.)
* Julius Pokorny: ''Indogermanisches etymologisches Wörterbuch''. Francke, Bern 1959.
Geology
* Karsten Meinke: ''Die Entwicklung der Weser im Nordwestdeutschen Flachland während des jüngeren Pleistozäns''. Diss., Göttingen 1992. Mit Bodenprofilen der Weserstädte.
* Ludger Feldmann und Klaus-Dieter Meyer (Hrsg.): ''Quartär in Niedersachsen. Exkursionsführer zur Jubiläums-Hauptversammlung der Deutschen Quartärvereinigung in Hannover''. DEUQUA-Exkursionsführer, Hannover 1998, page 89ff.
* Hans Heinrich Seedorf und Hans-Heinrich Meyer: ''Landeskunde Niedersachsen. Natur und Kulturgeschichte eines Bundeslandes''. Volume 1: ''Historische Grundlagen und naturräumliche Ausstattung''. Wachtholz, Neumünster 1992, page 105ff.
* Ludger Feldmann: ''Das Quartär zwischen Harz und Allertal mit einem Beitrag zur Landschaftsgeschichte im Tertiär''. Papierflieger, Clausthal-Zellerfeld 2002, page 133ff and others.
Archaeology
* Bremer Archäologische Blätter, Beiheft 2/2000 zur gleichnamigen Ausstellung im Focke-Museum: ''Siedler, Söldner und Piraten, Chauken und Sachsen im Bremer Raum'', Der Landesarchäologe Bremen, .
* Bremer Archäologische Blätter, Beiheft 3/2004 zur gleichnamigen Ausstellung im Focke-Museum: ''Gefundene Vergangenheit'', Archäologie des Mittelalters in Bremen, Der Landesarchäologe Bremen, . (wg.Geschichte des
Weserarms Balge)
History
* Georg Bessell: ''Geschichte Bremerhavens''. Morisse, Bremerhaven 1927, 1989.
* Heinz Conradis: ''Der Kampf um die Weservertiefung in alter Zeit''. In: ''Bremisches Jahrbuch''. Bremen 41.1944.
* J. W. A. Hunichs: ''Practische Anleitung zum Deich-, Siel- und Schlengenbau''. Erster Theil, von den Sielen. Bremen 1770.
* ''Die Kanalisierung der Mittelweser''. Published by the Mittelweser AG, Carl Schünemann Verlag, Bremen 1960.
* Kuratorium für Forschung im Küsteningenieurswesen: ''Die Küste''. In: ''Archiv für Forschung und Technik an der Nord- und Ostsee''. Boyens, Heide 51.1991.
Description
* Karl Löbe: ''Das Weserbuch''. Niemeyer, Hameln 1968.
* Nils Aschenbeck, Wolf Dietmar Stock: ''Eine Flussfahrt von der Aller bis zur Nordsee''. Atelier im Bauernhaus, Fischerhude 1998. .
{{Authority control
Rivers of Lower Saxony
Rivers of Bremen (state)
Bodies of water of the North Sea
Federal waterways in Germany
Rivers of Germany
Pied Piper of Hamelin