Flood protection Koblenz
The Koblenz flood protection is intended to protect the districts in Koblenz affected by floods . The city lies on the rivers Rhine and Moselle . Because of this location, it is particularly often and severely affected by floods. Flood protection was completed for the Ehrenbreitstein district in 2003, while protection for the Lützel , Neuendorf and Wallersheim districts was completed in 2019.
Flood in Koblenz
The records of floods in Koblenz go back to 1882. Since then, there have been repeated floods that have flooded the districts on the banks of the Rhine and Moselle rivers. The 1993 Rhine flood , which is also known as the flood of the century , reached a level of 9.49 meters in Koblenz. In comparison, the mean water of the Rhine at the Koblenz gauge is 2.37 meters. The residents were also hit particularly badly in 1983. That year there were two floods within just under two months. In mid-April a water level of 8.68 meters was reached and at the end of May there was another flood with a high of 8.77 meters. Further floods in Koblenz, which occurred before 1882 and are marked with high water marks, date from 1784 with 10.20 and 1651 with 9.71 meters.
The following table lists the ten highest water levels on the Rhine in Koblenz since 1882:
| space | date | Highest level [cm] |
|---|---|---|
| 1. | December 23, 1993 | 949 |
| 2. | January 1, 1926 | 930 |
| 3. | January 16, 1920 | 923 |
| 4th | January 30, 1995 | 922 |
| 5. | November 28, 1882 | 920 |
| 6th | May 29, 1983 | 877 |
| 7th | April 13, 1983 | 868 |
| 8th. | January 19, 1955 | 863 |
| 9. | March 28, 1988 | 861 |
| 10. | February 24, 1970 | 861 |
Protection for Ehrenbreitstein
The Ehrenbreitstein district was completely equipped with flood protection between 1997 and 2003 . The stationary part of the flood protection combined with the portable dam beams protect the district from a flood level of up to 10.88 meters.
Back then, the state left the planning for flood protection completely to the city of Koblenz. The federal highway 42 running along the Rhine and the parallel railway line were raised in the course of flood protection. Thus, the embankment with an integrated flood barrier now protects the district from flooding. In total, the construction costs amounted to approx. 12 million euros and 90% were borne by the state.
Protection for Lützel, Neuendorf and Wallersheim
The Neuendorf district is considered to be the worst hit by the floods. So there have long been efforts to protect this district. On the basis of a project document from 2004, the state of Rhineland-Palatinate decided within the framework of the Federal Garden Show 2011 to implement flood protection for these districts against 10-year floods.
In March 2006, the processing of the preliminary planning for flood protection in Koblenz was completed. The task of this preliminary planning was to find various possible solutions and to compare and evaluate them with one another. With a city council resolution in mid-2006, the city decided to pursue the preferred solution variant. The draft planning was completed at the end of 2006. The planning was approved by SGD Nord on November 6, 2008 . On February 26, 2010, the first groundbreaking ceremony for flood protection in the districts of Lützel, Neuendorf and Wallersheim on the left bank of the Rhine was officially carried out by the then Mayor Eberhard Schulte-Wissermann . The first phase of construction stretched from the Balduin Bridge to the protective harbor, the second from Neuendorfer Strasse over the allotment gardens towards Neuendorf. In a third construction phase, the dyke from 1927 between the Europabrücke and the Moselle railway bridge as well as the Moselle railway bridge and Balduin bridge was upgraded and the An der Bleiche pumping station was renovated. The system, estimated at 45 million euros, will consist of a combination of mobile elements made of aluminum as well as protective walls and dams . The construction work was completed in 2019.
The flood protection consists mainly of sheet piling . Their maximum protection height is 8.75 meters at the Koblenz gauge. This height protects against a so-called 10-year flood taking into account the confluence of the Rhine and Moselle floods. The wall itself protects up to a level of 8.45 meters, in addition, a freeboard can be added, which is another 30 cm high. In the area of the dikes between Europabrücke and Balduinbrücke, the protective height is 9.7 m. With a length of around 3.8 km, this flood wall along the Rhine is the longest local flood protection wall in the state of Rhineland-Palatinate.
Web links
- Flood protection for the districts on the left bank of the Rhine
- Middle Rhine flood reporting service
Individual evidence
- ↑ Key data of the Koblenz level ( memo from November 22, 2010 in the Internet Archive )
- ↑ Koblenz gauge
- ↑ Press release of the local SPD association from October 13, 2008
- ↑ Annual report 2005 ( Memento of the original from July 19, 2014 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. of the Rhineland-Palatinate Court of Auditors on the costs of flood protection under No. 21 (PDF; 1.1 MB).
- ↑ Flood wall : It starts on February 26th . In: Rhein-Zeitung , February 5, 2010
- ↑ a b Information on flood protection on the Rhine and Moselle. Retrieved December 25, 2019 .
- ↑ Complete flood protection for Lützel, Neuendorf and Wallersheim. Retrieved December 25, 2019 .
