Meiereibach (Darmbach)
| Meiereibach | ||
 Meiereibach am Oberfeld in Darmstadt |
||
| Data | ||
| Water code | DE : 239861194 | |
| location | Hessen , Germany | |
| River system | Rhine | |
| Drain over | Darmbach → Landgraben → Schwarzbach → Rhine → North Sea | |
| source | Dreibrunnenquelle in Darmstadt 49 ° 52 ′ 18 ″ N , 8 ° 41 ′ 4 ″ E |
|
| muzzle | In the Botanical Garden in Darmstadt, coordinates: 49 ° 52 ′ 13 ″ N , 8 ° 40 ′ 40 ″ E 49 ° 52 ′ 13 ″ N , 8 ° 40 ′ 40 ″ E
|
|
| length | about 500 m | |
| Catchment area | just under 1 km² | |
| Drain |
MQ |
9.5 l / s |
| Big cities | Darmstadt | |
The Meiereibach is a tributary of the Darmbach in Darmstadt .
It rises at the source of the Dreibrunnen at Hofgut Oberfeld in Erbacher Straße in the east of Darmstadt and flows to the Darmbach today through the Darmstadt sewer system.
course
Until the beginning of the 1980s, the Meiereibach ran partly as open water from the Dreibrunnenquelle through the club area of the Hottonia eV into the Judenteich. After the Judenteich it flowed further into the Botanical Garden and emptied into the Darmbach before it flowed into the Great Woog .
Since the renaturation and disclosure of the Meiereibach at Hofgut Oberfeld (from 2008) it now also flows "openly" through the former horse paddock at the Hofgut. Its meandering course comes to an abrupt end after the Jew pond, because the previously described flow path was cut off by the construction of Bundesstraße 26 in the 1970s. Since then, this body of water has been flowing into the Darmstadt sewage system behind the Judenteich . It is thus the second brook in Darmstadt, next to the Darmbach, that is deliberately directed into the sewer system. The city of Darmstadt pays an annual wastewater fee of around 530,000 euros for the discharge of this stream water.
Use and amount of water
The Meiereibach is characterized by a very constant water load, which was used by the city of Darmstadt in earlier times. Between 1535 and 1546, the water from the Meiereibach was collected for the first time and, from 1568, it was piped into the city center of Darmstadt to supply parts of the city with water. The so-called Dreibrunnenleitung is still known to many Darmstadt residents today.
On an annual average, around 235,000 cubic meters of water flow off in the Meiereibach. Its mean discharge is around 10 liters per second. Even in very dry summers, the flow rate does not fall below a minimum of 3 liters per second. The Meiereibach does not have a pronounced flood because it is fed directly from the spring area and no significant amounts of water flow above ground. Its maximum discharge therefore remains below 100 liters per second.
ecology
The Meiereibach is currently still transporting an increased load of phosphates and nitrates , which does not allow an immediate supply into the Darmbach or the Großer Woog. Since the phosphate and nitrate concentrations of the Darmbach and the Großer Woog are low, a supply line to the Meiereibach would pose a risk to the water quality of the popular Darmstadt bathing lake. The phosphate concentration is decisive as the minimum factor for the development of the algae in the Großer Woog.
It has not yet been clarified where the pollution of the Meiereibach water comes from. In the previous planning it was assumed that the nutrient load of the dairy creek, especially orthophosphates, comes from the former intensive farming on the Oberfeld and would decrease over time after the conversion of the Oberfeld estate to biodynamic farming. After such a development trend was not recorded, the phosphor situation in Meiereibach was examined more closely in two student projects at the Darmstadt University of Applied Sciences . According to more recent studies, it can be assumed that the phosphorus pollution of the water, which is critical for the bathing water Großer Woog, is of geogenic origin. The city is planning phosphate adsorption on granules for the necessary water treatment. In addition, it is planned to renew the existing sewage pits and pipes in the catchment area or to connect them to the sewer system in order to ensure their tightness and thus to be able to counter a possible other producer of these increased nitrate and phosphate levels.
The future of the dairy creek
The Meiereibach is to be disconnected from the sewerage system of the city of Darmstadt and fed through a culvert line under the federal road 26 to its former creek bed through the botanical garden. The Darmbach will thus be supplied by the very constant water load of the Meiereibach even in times of low rainfall, and the Große Woog will have a regular inflow of fresh water during prolonged periods of heat.
Varia
In March 2008, during dredging work to renaturate the Meiereibach, stone caverns were found on the former paddock at Hofgut Oberfeld in the immediate vicinity of the Meiereibach , which was once again flowing open there. This was then secured by the notified monument protection office of the city of Darmstadt and placed under protection.
Individual evidence
- ↑ a b c Disclosure Darmbach with connection Meiereibach BGS Wasserwirtschaft GmbH, Darmstadt, on: bgswasser.de (pdf; 128 kB)
- ↑ Answer to the request for the payment of wastewater fees for brook water from city councilor Doris Fröhlich from December 19, 2010 City Councilor Dipl.-Ing. Dieter Wenzel, Darmstadt, January 14, 2011, on: darmbach-ev.de (pdf; 93 kB)
- ↑ a b c d Magistrate's submission no. 2013/0243 - Resumption of decoupling of the Darmbach from the sewer network
- ↑ [1] on: www.darmbach.de
- ↑ [2] ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. Hofgut Oberfeld
- ↑ "Investigation of nutrient input in the Meiereibach", Darmstadt University of Applied Sciences, Department of Civil Engineering, Master's thesis Karin Knaust, August 2012
- ↑ Darmbach water profile ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. On: netzwerk-flur.de (pdf)
- ↑ Darmstädter Echo September 2, 2010, on: darmstadtbach.de (pdf; 534 kB)
- ↑ Darmstädter Echo March 28, 2008, page 13, on: darmbach.de (pdf; 3.8 MB)
literature
- Thomas Deuster: Waters in and around Darmstadt . 2nd Edition. Toeche-Mittler, Darmstadt 2008, ISBN 978-3-87820-130-4 .