Mehlemer Bach

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Mehlemer Bach
Eichenackersbach , Kernbach , Züllighovener Bach
The Mehlemer Bach in Mehlem

The Mehlemer Bach in Mehlem

Data
Water code DE : 27194
location North Rhine-Westphalia
River system Rhine
Drain over Rhine  → North Sea
source West of Werthhoven
50 ° 36 ′ 35 ″  N , 7 ° 7 ′ 55 ″  E
Source height approx.  253  m above sea level NHN
muzzle Near Bonn - Mehlem in the Rhine Coordinates: 50 ° 39 ′ 51 ″  N , 7 ° 11 ′ 51 ″  E 50 ° 39 ′ 51 ″  N , 7 ° 11 ′ 51 ″  E
Mouth height approx.  54  m above sea level NHN
Height difference approx. 199 m
Bottom slope approx. 19 ‰
length 10.6 km
Catchment area 17.897 km²
Left tributaries Sprüsselbach, Goldbach, Berkumer Bach
Big cities Bonn
Communities Wachtberg

The Mehlemer Bach is a 10.6 km long orographically left tributary of the Rhine in North Rhine-Westphalia , Germany . The sections in the upper reaches are also called Eichenackersbach (10.6–6.7 km) and Züllighovener Bach (6.7–5.1 km).

geography

The Mehlemer Bach rises as Eichenackersbach west of Wachtberg - Werthhoven at an altitude of 253  m above sea level. NHN . From here the stream flows east through Werthhoven (partly piped) and crosses under the district road 58. After a short run it reaches the border of Rhineland-Palatinate, runs a short distance along it and passes the village of Oedingen . The brook then swings to the north, passing the district of Züllighoven . The Sprüsselbach or Kernbach flows north of Züllighoven , from there the water is called Züllighovener Bach. The Goldbach flows before Kürrighoven . The Züllighovener Bach passes Kürrighoven in the east and joins the Berkumer Bach in Oberbachem . From there it flows to the northeast as Mehlemer Bach through Niederbachem . The Mehlemer Bach reaches the Bonn city limits in the Bad Godesberg district , flows through the Mehlem district (partially piped since 1904) and flows into the Rhine at river kilometer 644.07 .

The 17.9 km² catchment area ( Drachenfelser Ländchen ) drains over the Rhine to the North Sea . The most important tributaries are the Berkumer Bach and the Goldbach.

Flood risk

Construction site of the relief canal in Drachenstein Park (December 2016)

The Mehlemer Bach regularly floods in heavy rain and, along with the surrounding area, is one of the flood areas designated by the Cologne District Government. Catastrophic floods, especially in the lower reaches, occurred on July 3, 2010, June 20, 2013 and most recently on June 4, 2016.

In order to improve flood protection on the Mehlemer Bach, an approx. 1050 m long relief canal has been built from the banks of the Rhine at Drachensteinpark to Bachemer Straße since November 10, 2015. The project should be completed in 2019 [obsolete] . The costs rose from around 8.3 to an estimated 10 million euros.

literature

Web links

References and comments

  1. ↑ a b German basic map 1: 5000
  2. ↑ a b c Specialized information system ELWAS, Ministry for Climate Protection, Environment, Agriculture, Nature and Consumer Protection NRW ( notes )
  3. ↑ In older publications and maps you can find the name Kernbach instead of Eichenackersbach , but not in the water directory of the State Office for Nature, Environment and Consumer Protection in North Rhine-Westphalia.
  4. ↑ Water directory of the State Office for Nature, Environment and Consumer Protection NRW 2010 (XLS; 4.67 MB) ( Notes )
  5. ^ Karl-Friedrich Amendt: The incorporation of Mehlem 70 years ago . In: Godesberger Heimatblätter. Annual booklet of the Association for Homeland Care and Local History Bad Godesberg . Issue 42 , 2004, ISSN  0436-1024 , p. 124 ff. (Here: p. 135).
  6. ↑ Bach Development Plan 2008 , City of Bonn (PDF; 1.65 MB), p. 19.
  7. ↑ Rheingraben sub- catchment area. District government of Cologne, archived from the original on December 3, 2013 ; Retrieved December 8, 2013 .
  8. ↑ Kick-off event flood risk management guidelines on February 13, 2012. (PDF; 2.2 MB) Archived from the original on June 17, 2014 ; accessed on February 11, 2016 .
  9. ↑ Michael Wrobel: After the storm in Bad Godesberg: The break-in point at the Mehlemer Bach was filled with concrete. In: General-Anzeiger. June 6, 2016, accessed June 6, 2016 .
  10. ↑ Bulwark against the floods: relief channel in Mehlem almost finished. City of Bonn, May 19, 2018, accessed on July 18, 2018 .
  11. ↑ Richard Bongartz: Flood protection in Bad Godesberg - relief sewer for Mehlemer Bach will be ready soon. In: General-Anzeiger (Bonn). December 28, 2018, accessed April 27, 2019 .