Zieselsmaar
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Zieselsmaar Zieselsmaarsee |
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| Geographical location | Rhein-Erft-Kreis , North Rhine-Westphalia , Germany | |
| Drain | to the Köttinger See | |
| Location close to the shore | Kerpen , Erftstadt , Hürth , Cologne | |
| Data | ||
| Coordinates | 50 ° 51 '3 " N , 6 ° 48' 1" E | |
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| surface | 5.8 ha | |
| volume | 280,000 m³ | |
| Maximum depth | 10.1 m | |
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| Map of the Villeseen | ||
The Zieselsmaar , like all Ville Lakes , a lake left behind the brown coal mining in the Rhenish lignite mining area in North Rhine-Westphalia west of Cologne near the cities Hürth , Erftstadt and Kerpen in the Rhein-Erft district .
location
The lake is in the immediate vicinity of the Federal Motorway 1 and the Ville service area . It can be reached via the Hürth formerly Hürth-Knapsack exit and via the 495 Knapsack - Gymnich road .
use
The entire lake and the surrounding area are owned by the local nudist association “Familiensportbund Erftland Ville e. V. “leased. There is a nudist beach, and only nudism is practiced on the premises, including the sports and children's playgrounds. Outside the bathing season, the area is used for sporting events. Due to the very iron-rich water, the lake is colored red-orange, making it unsuitable for diving. The viewing depth is only a few centimeters. The area is fenced and bordered by trees, which also serve as privacy screens.
history
Zieselsmaar was a residential area with a few houses on the road that branches off from Heerstrasse near Kierdorf to Berrenrath . According to the name, it must have been a damp lowland, called Maar in the Rhineland . In the years 1891 to 1958, the Concordia lignite mine was operated by the entrepreneur Carl Brendgen, a briquette , facing brick and clinker factory at the address “Zisselsmaar (with double s) Post Kierdorf”. He owned other factories in Liblar and Horrem . After the charring, the area was recultivated .
Water quality
During the lignite mining, sulphide-containing sediments, e.g. B. pyrite , relocated so that they get into the lake with the groundwater. Oxidation processes produce sulfuric acid and iron oxide . The latter is responsible for the red color of the water. The lake is kept at a pH value > 3 by adding lime . Due to the low pH value, the water is as good as germ-free. However, nickel and cobalt are increasingly dissolved by the acid.
See also
Individual evidence
- ↑ a b c TU Cottbus: Lignite mining lakes in Germany - Current state of knowledge about water management issues of lignite opencast mining holes ( Memento of the original from September 2, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (accessed on October 5, 2010; PDF; 14.0 MB)
- ↑ Bathing water profile according to Art. 6 of the EC Bathing Water Directive 2006/7 / EEC ( Memento of the original from February 23, 2015 in the Internet Archive ) 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.
