Büntegraben (Landwehrgraben)

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The Büntegraben in Hanover , also simply called the Bünte , is a man-made moat that is of great importance for the drainage of the Hanover district of Kirchrode . From the end of a rainwater sewer there , the ditch directs the rainwater in the southeast of the Lower Saxony state capital over the Landwehrgraben into the Leine . The Büntegraben, which was largely redesigned in the 2000s to be close to nature, has - technically speaking - a hydraulic conductivity of 3.7 m³ / s . Order .

history

The Büntegraben runs through the historic "Kirchröder Niederungsgebiet der Bünte", a partly permanently damp, formerly also swampy area, which is also reminiscent of the names of nearby streets with the endings -hop and -siek. The villages of Engerode and Süsserode, which fell desolate in the Thirty Years' War, were located approximately at the level of the Westfalenhof : During excavations in the early 1970s, human bones were found there, which "the then director of the Hanover State Museum" Grabenhorst is said to have interpreted as possible remains of the Susserode cemetery.

Geologically , at the pond of the Westfalenhof - similar to the Heiligersbrunnen in the Eilenriede near Kleefeld - there are sources from the bottom of the shell limestone- containing nearby Kronsberg , which the groundwater can hardly seep through the deeper marl layers .

Already at the time of the Electorate of Hanover a field path led from the later Bemeroder Straße to Lange-Hop-Straße around 1780, which in 1919 was expanded to a street called Bünteweg, according to the Hannoversche Geschichtsbl Blätter from 1921 “according to the place name, by the way to the Büntewiesen past ".

Early 21st century created the Hanover Municipal Water to relieve possible flood peaks, just after the start of the open water course of Bünte trench an approximately 5800 m² large retention area , the rain water on the surface retained by the during heavy rain and by a contactor building slowly in the Büntegraben is released.

Starting in 2008, the Büntegraben was freed from the fortifications on its banks over a length of 680 meters in a first construction phase and then laid in a slightly meandering manner with different slopes. In addition, various berms were created and the entire river bed was equipped with a gravel bed . To increase ecological permeability, previously existing passages were expanded and replaced with enlarged corrugated steel profiles .

Starting in 2009, a further 310 meters of the Büntegraben were redesigned in a similar way, from the confluence of the Heistergraben to Bemeroder Straße, in a second construction phase. This area was planted with trees native to the location, while the body of water develops itself on a 15 meter wide strip by its own dynamics and is also intended to form small, so-called “secondary floodplains ”. The water maintenance should only be carried out extensively and as required.

See also

Web links

Individual evidence

  1. ↑ a b c d e f o. V .: The Büntegraben between grazing and agriculture (PDF document), DIN A4 leaflet, ed. from the state capital Hannover, Stadtentwässerung Hannover, Hannover: 2016
  2. ^ A b Ernst Kühle: "The grounds of the Westfalenhof ...", in Dieter Schulz: The Westfalenhof in Hanover. Trees and bushes in the park of the Botanical Institute of the Veterinary University, Hanover: Schlütersche Verlagsanstalt und Druckerei, 1987, ISBN 978-3-87706-280-7 and ISBN 3-87706-280-6 , p. 8ff.
  3. ^ Helmut Zimmermann : Bünteweg , in ders .: The street names of the state capital Hanover. Hahnsche Buchhandlung Verlag, Hannover 1992, ISBN 3-7752-6120-6 , p. 50

Coordinates: 52 ° 21 '22 "  N , 9 ° 48' 14"  E