The Ems ( ; ) is a river in northwestern
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 runs through the
states
State most commonly refers to:
* State (polity), a centralized political organization that regulates law and society within a territory
**Sovereign state, a sovereign polity in international law, commonly referred to as a country
**Nation state, a ...
of
North Rhine-Westphalia
North Rhine-Westphalia or North-Rhine/Westphalia, commonly shortened to NRW, is a States of Germany, state () in Old states of Germany, Western Germany. With more than 18 million inhabitants, it is the List of German states by population, most ...
and
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 ...
, and discharges into the
Dollart Bay which is part of the
Wadden Sea
The Wadden Sea ( ; ; or ; ; ; ) is an intertidal zone in the southeastern part of the North Sea. It lies between the coast of northwestern continental Europe and the range of low-lying Frisian Islands, forming a shallow body of water with tida ...
. Its total length is .
The state
border
Borders are generally defined as geography, geographical boundaries, imposed either by features such as oceans and terrain, or by polity, political entities such as governments, sovereign states, federated states, and other administrative divisio ...
between the Lower Saxon area of
East Friesland (Germany) and the
province
A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...
of
Groningen
Groningen ( , ; ; or ) is the capital city and main municipality of Groningen (province), Groningen province in the Netherlands. Dubbed the "capital of the north", Groningen is the largest place as well as the economic and cultural centre of ...
(Netherlands), whose exact course was the subject of a border dispute between Germany and the Netherlands (settled in 2014), runs through the Ems
estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime enviro ...
.
Course
The source of the river is in the southern
Teutoburg Forest in North Rhine-Westphalia. In Lower Saxony, the brook becomes a comparatively large river. Here the swampy region of
Emsland
Landkreis Emsland () is a districts of Germany, district in Lower Saxony, Germany named after the river Ems (river), Ems. It is bounded by (from the north and clockwise) the districts of Leer (district), Leer, Cloppenburg (district), Cloppenbur ...
is named after the river. In
Meppen the Ems is joined by its largest tributary, the
Hase River. It then flows northwards, close to the
Dutch border, into
East Frisia
East Frisia () or East Friesland (; ; ; ) is a historic region in the northwest of Lower Saxony, Germany. It is primarily located on the western half of the East Frisia (peninsula), East Frisian peninsula, to the east of West Frisia and to the ...
. Near
Emden
Emden () is an Independent city (Germany), independent town and seaport in Lower Saxony in the north-west of Germany and lies on the River Ems (river), Ems, close to the Germany–Netherlands border, Netherlands border. It is the main town in t ...
, it flows into the Dollard bay (a
national park
A national park is a nature park designated for conservation (ethic), conservation purposes because of unparalleled national natural, historic, or cultural significance. It is an area of natural, semi-natural, or developed land that is protecte ...
) and then continues as a
tidal 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 ...
towards the Dutch city of
Delfzijl.
Between Emden and Delfzijl, the Ems forms the border between the Netherlands and Germany and was subject to a mild dispute: the Dutch believed that the border runs through the geographical centre of the estuary, whereas the Germans claimed it runs through the deepest
channel (which is close to the Dutch
coast
A coast (coastline, shoreline, seashore) is the land next to the sea or the line that forms the boundary between the land and the ocean or a lake. Coasts are influenced by the topography of the surrounding landscape and by aquatic erosion, su ...
). As the parties are now friendly states with an open border, the argument went no further than an agreement to disagree. The issue was settled amicably in October 2014.
It became an active issue in late July 1914, when the Imperial German government began plans to mine the whole of the estuary that they claimed, in preparation for the launching of the Great War. The Dutch envoy in Berlin, Wilem Alexander Frederik Baron Gevers, tactfully announced the boundary was uncertain, and that the dispute was "opgeschort", which could mean either "suspended" or "resolved", depending on the context. The Dutch government endorsed the ambiguous declaration, thus relieving itself of an obligation to declare war on Germany for violating its neutrality. After the war, the dispute was resumed.
Past Delfzijl, the Ems discharges into the Wadden Sea, part of 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 ...
. The two
strait
A strait is a water body connecting two seas or water basins. The surface water is, for the most part, at the same elevation on both sides and flows through the strait in both directions, even though the topography generally constricts the ...
s that separate the German
island
An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...
of
Borkum from its neighbours
Rottumeroog (Netherlands) and
Memmert (Germany) continue the name "Ems", as they are called ''Westere(e)ms'' and ''Osterems'' (West and East Ems).
Tourism

The Ems is accompanied and crossed by different long-distance bicycle routes:
* EmsAuenWeg
*
Emsland Route
*
Hase Ems Weg
Cities and municipalities
*
Schloß Holte-Stukenbrock
*
Hövelhof
*
Steinhorst
*
Westerwiehe
*
Schöning
*
Rietberg
*
Rheda-Wiedenbrück
Rheda-Wiedenbrück (; Westphalian language, Westphalian: ''Raie-Wienbrügge'') is a city in the Gütersloh (district), district of Gütersloh, in North Rhine-Westphalia, Germany.
Geography
The twin community lies within the valley of the river E ...
*
Harsewinkel
*
Warendorf
Warendorf (, Westphalian language, Westphalian: ''Warnduorp'') is a town in North Rhine-Westphalia, Germany, and capital of Warendorf (district), Warendorf District.
The town is best known today for its well-preserved medieval town centre, for eq ...
*
Telgte
*
Greven
*
Emsdetten
*
Rheine
*
Salzbergen
*
Emsbüren
*
Lingen
*
Geeste
*
Meppen
*
Haren
*
Lathen
*
Kluse
*
Dörpen
*
Lehe
*
Aschendorf
*
Tunxdorf
*
Papenburg
Papenburg (; East Frisian Low Saxon: ''Papenbörg'') is a city in the district of Emsland, Lower Saxony, Germany, situated at the river Ems. It is known for its large shipyard, the Meyer-Werft, which specializes in building cruise liners.
Ge ...
*
Weener
*
Leer
*
Jemgum
*
Midlum
*
Critzum
*
Rorichum
*
Gandersum
*
Emden
Emden () is an Independent city (Germany), independent town and seaport in Lower Saxony in the north-west of Germany and lies on the River Ems (river), Ems, close to the Germany–Netherlands border, Netherlands border. It is the main town in t ...
*
Knock
*
Delfzijl
Tributaries
*
Wapelbach
*
Dalke
*
Lutter
*
Axtbach
*
Hessel
*
Bever
*
Werse
*
Eltingmühlenbach
*
Große Aa
*
Hase
*
Nordradde
*
Leda
History
The Ems was known to several ancient authors:
Pliny the Elder
Gaius Plinius Secundus (AD 23/24 79), known in English as Pliny the Elder ( ), was a Roman Empire, Roman author, Natural history, naturalist, and naval and army commander of the early Roman Empire, and a friend of the Roman emperor, emperor Vesp ...
in ''Natural History'' (4.14),
Tacitus
Publius Cornelius Tacitus, known simply as Tacitus ( , ; – ), was a Roman historian and politician. Tacitus is widely regarded as one of the greatest Roman historians by modern scholars.
Tacitus’ two major historical works, ''Annals'' ( ...
in the ''Annals'' (Book 1),
Pomponius Mela
Pomponius Mela, who wrote around AD 43, was the earliest known Roman geographer. He was born at the end of the 1st century BC in Tingentera (now Algeciras) and died AD 45.
His short work (''De situ orbis libri III.'') remained in use nea ...
(3.3),
Strabo
Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-si ...
and
Ptolemy
Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
, ''Geography'' (2.10). Ptolemy's name for it was the Amisios potamos, and in
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
Amisius fluvius. The others used the same, or Amisia, or Amasia or Amasios. The identification is certain, as it always is listed between the
Rhine
The Rhine ( ) is one of the List of rivers of Europe, major rivers in Europe. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms part of the Swiss-Liechtenstein border, then part of the Austria–Swit ...
and the
Weser
The Weser () is a river of Lower Saxony in north-west Germany. It begins at Hannoversch Münden through the confluence of the Werra and Fulda. It passes through the Hanseatic city of Bremen. Its mouth is further north against the ports o ...
, and was the only river leading to the
Teutoburg Forest.
The Amisius flowed from the Teutoburg Forest, home of the
Cherusci
The Cherusci were a Germanic tribe that inhabited parts of the plains and forests of northwestern Germania in the area of the Weser River and present-day Hanover during the first centuries BC and AD. Roman sources reported they considered thems ...
, with the
Bructeri and others bordering the river. These tribes were among the initial
Franks
file:Frankish arms.JPG, Aristocratic Frankish burial items from the Merovingian dynasty
The Franks ( or ; ; ) were originally a group of Germanic peoples who lived near the Rhine river, Rhine-river military border of Germania Inferior, which wa ...
. The Romans were quite interested in adding them to the empire, and to that end built a fort, Amisia, at the mouth of the Ems. As the river was navigable to their ships, they hoped to use it to access the tribes at its upper end.
Surrounding the river for most of its length, however, were swamps, bogs and marshes. The Romans found they had no place to stand, could not pick the most favourable ground, because there was none, and could not in general follow the strategies and tactics developed by the
Roman army
The Roman army () served ancient Rome and the Roman people, enduring through the Roman Kingdom (753–509 BC), the Roman Republic (509–27 BC), and the Roman Empire (27 BC–AD 1453), including the Western Roman Empire (collapsed Fall of the W ...
. They were stopped at the
Battle of Teutoburg Forest, 9 AD, and were checked again 6 years later. The Ems became a road leading nowhere for them, nor were they ever able to bridge the swamps satisfactorily with causeways.
The Dollart Bay near Emden did not exist until 1277, when a catastrophic storm surge flooded 43 parishes and killed an estimated 80,000 people.
Most of the land lost in that flood has been reclaimed in a series of initiatives from the 16th to the early 20th centuries. The river in 1277 curved north by Emden, covering the area of the current Emden harbor complex.
Construction of canals in more modern times connected the Ems to other waterways, opening it as a highway of industrial transportation.
River islands
*
Bingumer Sand
References
External links
www.ems.nrw.de/(in German)
The Ems with Emsbueren
{{Authority control
Rivers of Groningen (province)
Federal waterways in Germany
Germany–Netherlands border
Rivers of Lower Saxony
Rivers of North Rhine-Westphalia
Territorial disputes of Germany
Territorial disputes of the Netherlands
Rivers of the Netherlands
Rivers of Germany