The Schwalm (

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

, )) or Swalm ( Dutch, ), is a small

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 ...

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 ...

and the

Netherlands , Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Nether ...

, tributary to the river

Meuse The Meuse or Maas is a major European river, rising in France and flowing through Belgium and the Netherlands before draining into the North Sea from the Rhine–Meuse–Scheldt delta. It has a total length of . History From 1301, the upper ...

. Its source is near

Wegberg Wegberg (; ) is the northernmost town in the district of Heinsberg (district), Heinsberg in North Rhine-Westphalia, Germany. Geography Wegberg is situated between Mönchengladbach in the northeast and Erkelenz in the southeast; the town of Rhein ...

, in the district Heinsberg, south-west of

Mönchengladbach Mönchengladbach (, ) is a List of cities and towns in Germany, city in North Rhine-Westphalia, western Germany, west of the Rhine, halfway between Düsseldorf and the Netherlands, Dutch border. Geography Municipal subdivisions Since 2009, th ...

, in

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 ...

(Germany). The Schwalm flows through

and Brüggen before flowing into the Meuse across the border with the Netherlands, in

Swalmen Swalmen (; ) is a village in the municipality of Roermond, the south-eastern Netherlands. This village is situated between the German border and the river Meuse (''Maas'' in Dutch). Until 1 January 2007, Swalmen was a separate municipality, cove ...

. Its total length is 45 km.

Sources

The original source region has since become an area of carr with poor water quality. The water of the Schwalm comes mainly from '' Rheinbraun's'' waste water pits. This

brown coal Lignite (derived from Latin ''lignum'' meaning 'wood'), often referred to as brown coal, is a soft, brown, Combustion, combustible sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35% and is considered ...

open cast mine is required to feed the waste water into the surface water. Otherwise it would fill the mine, which is up to 230 metres deep.This is achieved by means of shafts (''Schlitzschächten'') through which the water flows back into the

groundwater Groundwater is the water present beneath Earth's surface in rock and Pore space in soil, soil pore spaces and in the fractures of stratum, rock formations. About 30 percent of all readily available fresh water in the world is groundwater. A unit ...

. If it were not for these shafts, the rivers

Niers The Niers (, ) is a river in Germany and the Netherlands, a right tributary of the river Meuse (German and ). Its wellspring is near Erkelenz, south of Mönchengladbach, in North Rhine-Westphalia (Germany). Course and length The Niers flows thr ...

and Schwalm would long since have dried up. This would also destroy the mixed alder and ash wet woodland typical of the region.

Course

The

source Source may refer to: Research * Historical document * Historical source * Source (intelligence) or sub source, typically a confidential provider of non open-source intelligence * Source (journalism), a person, publication, publishing institute ...

of the Schwalm is in a

wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

area south of the German village of

- Tüschenbroich at an elevation of about . From there the river flows mainly through the

Maas-Schwalm-Nette Nature Park The Maas-Schwalm-Nette Nature Park (; ) or NMSM is a cross-border nature park in Germany and the Netherlands, which was founded in 2002. It is a regionally important recreation area. Description The park has an area of 870 km2. Its nam ...

, its riverbed running between the rivers Rur, Nette and

. Of its total length from this source to its

mouth A mouth also referred to as the oral is the body orifice through which many animals ingest food and animal communication#Auditory, vocalize. The body cavity immediately behind the mouth opening, known as the oral cavity (or in Latin), is also t ...

on the

, near the village of

at about , 13 kilometres of the river run through Dutch territory. Parts of the river which, for example, run past the villages of

Niederkrüchten Niederkrüchten is a municipality in the district of Viersen, in North Rhine-Westphalia, Germany. It is situated approximately 15 km east of Roermond in the Netherlands and 15 km west of Mönchengladbach. Elmpt The formerly separate ...

, Schwalmtal, Brüggen-Born, Brüggen and

, form natural

meander A meander is one of a series of regular sinuous curves in the Channel (geography), channel of a river or other watercourse. It is produced as a watercourse erosion, erodes the sediments of an outer, concave bank (cut bank, cut bank or river cl ...

s. The

catchment area A catchment area in human geography, is the area from which a location, such as a city, service or institution, attracts a population that uses its services and economic opportunities. Catchment areas may be defined based on from where people are ...

of the Schwalm is 268.7 square kilometres, of which around 27 square kilometres lie in the Netherlands.

Tributaries

* Beeckbach * Mühlenbach * Knippertzbach * Kranenbach * Elmpter Bach

Flora and fauna

The carr and

heath A heath () is a shrubland habitat found mainly on free-draining infertile, acidic soils and is characterised by open, low-growing woody vegetation. Moorland is generally related to high-ground heaths with—especially in Great Britain—a coole ...

bog A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and musk ...

areas along the Schwalm provide a diverse habitat for

fauna Fauna (: faunae or faunas) is all of the animal life present in a particular region or time. The corresponding terms for plants and fungi are ''flora'' and '' funga'', respectively. Flora, fauna, funga and other forms of life are collectively ...

and

flora Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. The corresponding term for animals is ''fauna'', and for f ...

Frog A frog is any member of a diverse and largely semiaquatic group of short-bodied, tailless amphibian vertebrates composing the order (biology), order Anura (coming from the Ancient Greek , literally 'without tail'). Frog species with rough ski ...

dragonflies A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of dragonflies are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threate ...

damselflies Damselflies are flying insects of the suborder Zygoptera in the order Odonata. They are similar to dragonflies (which constitute the other odonatan suborder, Epiprocta) but are usually smaller and have slimmer bodies. Most species fold the win ...

bluethroat The bluethroat (''Luscinia svecica'') is a small passerine bird that was formerly classed as a member of the thrush family Turdidae, but is now known to be an Old World flycatcher, in the family Muscicapidae. It, and similar small European spe ...

kingfisher Kingfishers are a family, the Alcedinidae, of small to medium-sized, brightly coloured birds in the order Coraciiformes. They have a cosmopolitan distribution, with most species living in the tropical regions of Africa, Asia, and Oceania, ...

and

golden oriole The Eurasian golden oriole (''Oriolus oriolus''), also called the common golden oriole, is the only member of the Old World oriole family of passerine birds breeding in Northern Hemisphere temperate regions. It is a summer migrant in Europe and ...

are to be found as are water crowfoot,

bog myrtle ''Myrica gale'' is a species of flowering plant in the family Myricaceae native to parts of Eurasia and North America. Common names include bog-myrtle, sweet willow, Dutch myrtle, and sweetgale. Description ''Myrica gale'' is a deciduous shrub g ...

and other rare plants.

brown trout The brown trout (''Salmo trutta'') is a species of salmonid ray-finned fish and the most widely distributed species of the genus ''Salmo'', endemic to most of Europe, West Asia and parts of North Africa, and has been widely introduced globally ...

barbel Barbel may refer to: *Barbel (anatomy), a whisker-like organ near the mouth found in some fish (notably catfish, loaches and cyprinids) and turtles *Barbel (fish), a common name for certain species of fish **''Barbus barbus'', a species of cyprini ...

and

chub Chub is a common fish name. It pertains to any one of a number of ray-finned fish in several families and general. In the UK, the term ''chub'' usually refers to the species '' Squalius cephalus''. In addition, see sea chub. In family Cyprinid ...

are at home in the river; along the

river bank In geography, a bank is the land alongside a body of water. Different structures are referred to as ''banks'' in different fields of geography. In limnology (the study of inland waters), a stream bank or river bank is the terrain alongsid ...

s are also various members of the eter water rat family.

References

External links

Maas-Schwalm-Nette Nature Park

Schwalm-Nette Nature Reserve
Rivers of the Netherlands Rivers of Limburg (Netherlands) Rivers of North Rhine-Westphalia Beesel Roermond Rivers of Germany International rivers of Europe {{Netherlands-river-stub