Vilicher Bach

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Vilicher Bach
Mühlenbach, Holtorfer Bach, Wielesbach, Geislarer Bach
The Vilicher Bach in Holzlar, referred to here as Mühlenbach

The Vilicher Bach in Holzlar, referred to here as Mühlenbach

Data
Water code DE : 271972
location North Rhine-Westphalia , Germany
River system Rhine
Drain over Rhine  → North Sea
source In Holtorfer district Ungarten
50 ° 43 '42 "  N , 7 ° 11' 25"  O
Source height approx.  160  m above sea level NHN
muzzle north of Beuel Coordinates: 50 ° 45 ′ 12 ″  N , 7 ° 6 ′ 22 ″  E 50 ° 45 ′ 12 ″  N , 7 ° 6 ′ 22 ″  E
Mouth height 56  m above sea level NHN
Height difference approx. 104 m
Bottom slope approx. 12 ‰
length 8.6 km
Catchment area 9.811 km²
Left tributaries Alaunbach
Right tributaries Wolfsbach , Steinbach , Mersbach
Big cities Bonn
Mühlenbach near the source

Mühlenbach near the source

The Vilicher Bach is a right tributary of the Rhine in Bonn , Beuel district . Its total length is 8.6 kilometers and its catchment area is 9.8 square kilometers. Sections of the water are also referred to as Mühlenbach , Holtorfer Bach , Geislarer Bach and Wielesbach .

course

The Vilicher Bach arises from three source brooks in Holtorf , namely an unnamed one from Niederholtorf , the Wielesbach from Ungarten and the Mersbach on the border between Holtorf and Hoholz , and flows first in a northerly direction on the border between Holtorf and Holzlar and has been there since 1975 Flood retention basin called Holzlarer See. It then crosses Holzlar , where it is also called Holzlarer Bach and later Mühlenbach. Below Holzlar it takes up the Steinbach and leads northeast past Pützchen-Bechlinghoven , where the Wolfsbach and the Alaunbach flow into it. It crosses Vilich-Müldorf and finally flows in a westerly direction on the border between Vilich and Geislar , then through Schwarzrheindorf / Vilich-Rheindorf on the right side into the Rhine .

Characteristic

In addition to areas used for agriculture, the Vilicher Bach also crosses settlement areas with loosened buildings and often appears in this area as developed and partially piped water. Structures close to nature can only be found in a renatured section in the area of ​​the Mühlenbachhalle near Vilich-Müldorf . The stream is affected by the discharge of rainwater and from the mixed water sewer system and is therefore partly assigned to quality class IV according to the 2002 water quality report, which corresponds to excessive pollution. On the other hand, the upper course has a significantly more positive water quality, which in a short section even corresponds to quality class I-II and thus a low pollution. The normal flow rate of the Vilicher Bach is 7 to 54 liters per second, but can also increase up to 3.5 m³ during high water. During periods of low precipitation, the trench-like lower course of the water falls partially dry.

The Vilicher Bach south of Geislar during a dry period in September
Vilicher Bach near the Beuel sewage treatment plant. At the time of recording (2014) it had fallen dry.

Web links

Commons : Vilicher Bach  - Collection of Images

Individual evidence

  1. ↑ a b German basic map 1: 5000
  2. ↑ a b Water directory of the State Office for Nature, Environment and Consumer Protection NRW 2010 (XLS; 4.67 MB) ( Notes )
  3. ↑ to ELWAS-WEB under ID 477, OFWK ID DE_NRW_271972_0 / 3D, 5600kbm capacity in full stowage
  4. ↑ Bach Development Plan 2008 , City of Bonn (PDF; 1.65 MB)