Gallows ditch
| Gallows ditch | ||
 The Galggraben on the southern settlement boundary of the Black Mountain, looking east upstream. |
||
| Data | ||
| Water code | DE : 482775 | |
| location | Lower Saxony , Germany | |
| River system | Weser | |
| Drain over | Ölpersee → Oker → Aller → Weser → North Sea | |
| source |
Nordstadt (Braunschweig) , industrial site Karl-Schmidt-Strasse 52 ° 16 ′ 49 ″ N , 10 ° 30 ′ 52 ″ E |
|
| Source height | 69 m | |
| muzzle |
Oilsee Coordinates: 52 ° 17 ′ 23 " N , 10 ° 30 ′ 19" E 52 ° 17 ′ 23 " N , 10 ° 30 ′ 19" E |
|
| Mouth height | 67 m | |
| Height difference | 2 m | |
| Bottom slope | 1.2 ‰ | |
| length | 1.7 km | |
| Big cities | Braunschweig | |
The Galggraben is a drainage ditch over 1.5 km long in the northern part of Brunswick , which is mostly canalised and flows into the Ölpersee after an underground section on the Black Mountain .
course
The beginning of the Galggraben is marked on the site of the former Schmalbach works . It runs to the rear of the allotment gardens on the Oker , mainly to the north. After about a hundred meters it is crossed by the A 392 motorway embankment . At the level of the rifle house it is piped and reappears between the Uferstraße and the fairground or at the “Water World” and reaches the properties on the street Am Galggraben . A ditch from the area of the Old Jewish Cemetery opens there from the right .
At the Black Mountain he turns west. At the crossing by a sidewalk that continues the Heimgarten street into the green area of the Ölpersee, a pipeline picks up the water and leads it on the north side of the lake to the former course of the Oker. The Galggraben flows into the lake at the level of the Weidengrund road .
Historical course
On historical maps, the ditch extends upstream to the area of the Wendentor, i.e. on the left side of the trade route, which is now represented by Mühlenpfordtstrasse and Hamburger Strasse , and has two arms that flow into the Oker.
In the city map from 1775 according to Friedrich Knoll , the parcel west of Hamburger Strasse to Galggraben is called Galgenkamp , which was bordered to the south by Strasse Hasenwinkel and roughly included the later built-up areas on Reiherstrasse and Karl-Schmidt-Strasse. The corridor to the left of the trench up to the Oker is known as Wendenmasch , downstream to Ölper , which is what today's Wendenmaschstraße is reminiscent of. The fire brigade and thermal power station are located here today . Also on the left Oker south of the hallway. The court west of the Eichtal had the field name Galgenkamp , which was obviously in connection with the former high court of the city of Braunschweig.
Water quality
The trench was examined in 2011 by the Institute for Geoecology at the TU Braunschweig on behalf of the Braunschweig municipal drainage system over a length of 1510 meters. In its piped sections, the ecological quality is very poor, otherwise rather poor due to the edge reinforcement with concrete slabs and the park-like maintenance of the edge area. This corresponds to a structural quality between moderate and unsatisfactory.
Web links
Map display of the Galggraben at openstreetmap.org
Individual evidence
- ↑ a b c LGLN : Topographic map 1: 50,000 , status 2000, CD-ROM Top50-Viewer
- ↑ GeoLife, land surveying Lower Saxony. (No longer available online.) Archived from the original on March 19, 2015 ; accessed on December 13, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Unknown: Ground plan of the city of Braunschweig , after 1671, colored copper engraving, City Archives Braunschweig, 5 HX13: 10.
- ^ Institute for Geoecology, TU Braunschweig, Thomas Ols Eggers: Water structure and water quality investigations in flowing waters in the area of the city of Braunschweig, Annual Report 2011 , Braunschweig 2011, p. 34 ff.
