Sickingmühlenbach

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Sickingmühlenbach
Sickingmuehlenbach05.jpg
Data
Water code DE : 27892
location North Rhine-Westphalia , Germany
River system Rhine
Drain over Lippe  → Rhine  → North Sea
muzzle At Marl- Sickingmühle in the Lippe coordinates: 51 ° 42 '13 "  N , 7 ° 6' 41"  E 51 ° 42 '13 "  N , 7 ° 6' 41"  E

length 3 km (with Silvertbach 13.825 km)
Catchment area 79.004 km²
Medium-sized cities Marl

The Sickingmühlenbach is a 13.8 km long orographically left tributary of the Lippe (with Silvertbach ) in North Rhine-Westphalia , Germany .

course

The Sickingmühlenbach is created by the confluence of the Silvertbach and Loemühlenbach in the Sickingmühle district of Marl , near the chemical park and the Auguste Victoria colliery . The stream then flows in a north-north-westerly direction for about three kilometers past a landfill, a mine dump, some settlements, a port area and forest. Shortly before it flows into the Lippe , it crosses under the Wesel-Datteln Canal by means of a culvert .

In the lower course, the Sickingmühlenbach has been straightened, diked and laid with concrete floors. Two large rain retention and flood basins are located in the forest area, and in the meantime there are frequent drops and falls to create backlogged sections.

Pumping station

The free outflow into the Lippe is no longer given due to subsidence . The creek pumping station raises the Sickingmühlenbach by about eleven meters. Of all 26 brook pumping stations in the Lippeverband, it has the largest pumping capacity at 20 cubic meters per second.

Until the reconstruction of the group water pipes at the end of 2006, the mine was still discharging wastewater into both the Silvert and Sickingmühlenbach.

Radionuclide levels

The sediments of the stream are radioactively contaminated by radioactive mine water from the Auguste Victoria colliery . A doctoral thesis published in 2001 found elevated levels of the radionuclide 226 radium , which reached a maximum of 15,000 Becquerel per kilogram. The local dose rate over the sediments reached a maximum of 6000 nSv / h ( nanosievert per hour). Values ​​of 1700 nSv / h were found at the mouth of the stream; In the Ore Mountains , areas had to be rehabilitated because of a similarly high load (1730 nSv / h). Directly below the mouth of the Sickingmühlenbach, the 226 radium concentration in the Lippe rose by a factor of 15; up to the confluence with the Rhine, the dose rates in the bank area remained significantly higher.

gallery

  • Warning & information signs

  • Boulder

  • Rainwater retention basin

  • Rainwater retention basin

Individual evidence

  1. ↑ a b Water directory of the State Office for Nature, Environment and Consumer Protection NRW 2006 ( Memento from February 15, 2010 in the Internet Archive ) (PDF; 1.03 MB)
  2. ↑ Running waters in the Lippeverband area: Biology-Condition-Bachsysteme, self-published by Lippeverband, published in February 2006
  3. ↑ Lippe river basin map 2008  ( 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. , Lippeverband, 2008@1@ 2Template: Toter Link / www.eglv.de  
  4. ↑ Simone Schmid: Investigations on the radionuclide pollution of surface water, sediments and soils as a result of the coal mining in the Ruhr area . Dissertation at the University of Essen. 2001, abstract and pages 73, 88, 153 ( PDF ).