Rotbach (Erft)

Rotbach
Rotbach in Lechenich
Data
Water code	EN : 2744
location	District of Euskirchen and Rhein-Erft District ; North Rhine-Westphalia ( Germany )
River system	Rhine
Drain over	Erft  → Rhine  → North Sea
source	South of Voißel in the Eifel 50 ° 33 ′ 59 ″  N , 6 ° 33 ′ 51 ″  E
Source height	471  m above sea level NHN
muzzle	In Erftstadt - Dirmerzheim in the Erftstadt coordinates: 50 ° 49 '36 "  N , 6 ° 46' 44"  O 50 ° 49 '36 "  N , 6 ° 46' 44"  O
Mouth height	91  m above sea level NHN
Height difference	380 m
Bottom slope	9.7 ‰
length	39.1 km
Catchment area	236.265 km²

The Rotbach (called Nöthener Siefen , Schliebach , Mühlenbach or Bruchbach in the upper reaches ) is a 39.1 km long, southwestern and orographically left tributary of the Erft in the districts of Euskirchen and Rhein-Erft in North Rhine-Westphalia ( Germany ).

course

The Rotbach rises as Nöthener Siefe n in the Eifel and runs through the Rhineland . Its source is on the south-eastern edge of the Kermeter , a northern part of the Eifel, between Kall - Wallenthal in the southeast and Mechernich - Voißel in the north, two localities that the stream does not flow through. Below or northeast of Voißel, the flowing water to Mechernich- Glehn also bears the name Schliebach and from Glehn to Mechernich- Eicks it is called Mühlenbach or Bruchbach .

Within the Rhineland, the Rotbach flows mostly in a north-northeast direction through the Jülich-Zülpicher Börde and runs through districts from Zülpich to Lechenich . On the way there it forks into the Lechenicher Mühlenfließ and the Rotbach, both of which flow through Lechenich and come together again after about 8 kilometers at Konradsheim , whereby the Mühlenfließ is temporarily fed by the Erpa . Finally, the Rotbach opens near Dirmerzheim in the coming from the south Rhein influx Erftstadt to open .

Tributaries

The Eselsbach (near Mechernich-Glehn), the Bergbach (near Sinzenich), the Vlattener Bach (near Lövenich) and the Erpa (between Erftstadt-Ahrem and Lechenich) flow into the Rotbach as tributaries of the Rotbach on the orographic left . The Bleibach flows into the Rotbach at Mülheim- Wichterich as an orographically right-hand side stream .

The most important tributary of the Rotbach is the 23.9 km long Bleibach , which with a 50.036 km² catchment area makes up 21% of the Rotbach. The second longest tributary is the Vlattener Bach . Its 31.528 km² catchment area is exceeded by the 7.4 km long Lechenicher Mühlengraben (Lechenicher Mühlenbach) with 37.115 km². The following table contains the tributaries of the Rotbach in accordance with the NRW list of waters.

Surname	page	Length ( km )	EZG ( km² )	Stat. ( km )	GKZ
NN	Left	0.7		37.644	2744-112
Schliebach	Left	1.0		35.911	2744-12
Mühlenbach	right	2.3		34.036	2744-14
Eselsbach	Left	3.9	10.377	34.090	2744-2
Eichgraben	Left	0.8	0.713	33.250	2744-31?
Dützgraben	Left	0.9		31.983	2744-32
Kramersgraben	Left	1.8		30.616	2744-34
Mehlenbach	Left	5.2	4.494	29,594	2744-4
Mountain stream	Left	7.9	22.084	23.661	2744-52
Linzenich Castle inlet	right	1.3		22,500	2744-592
Mühlenbach	Left	1.8		22.833	2744-594
Vlattener Bach	Left	21.8	31,528	21,708	2744-6
NN	Left	2.0		20.108	2744-612
Ditch / pond complex Haus Dürffenth	right	0.4		20.051	2744-72
Mühlengraben	Left	1.5		18,991	2744-74
Rotbachmühlengraben	Left	1.3		15.478	2744-76
Bleibach	right	23.9	50.036	13.807	2744-8
Rulence flow	Left	2.7		11.083	2744-912
Borrer Fliess	Left	1.9		10.290	2744-914
Niederberger Bach	right	6.0		8.537	2744-916
Friesheim Bach	Left	4.0		8.405	2744-918
Lechenicher Mühlenbach / -graben	Left	7.4	37.115	1.070	2744-92

Characteristic

Characteristic of the Rotbach is the red-brown color of the water, especially after heavy rainfall, due to the high iron content , which is also clearly visible in the fields to the right and left of the river. A high iron content leads to light to dark red / brown color tones of the iron oxide due to the oxidation of the iron .

Flood and flood protection

The stream has a major impact on life in Friesheim , as fields and houses lie on its banks that have been repeatedly flooded by heavy rains since the 1960s. However, this danger is no longer so serious today due to the Erftstadt-Niederberg flood retention basin .

References and comments

1. ↑ ^{a b} German basic map (DGK 5) in Topographical Information Management, Cologne District Government, Department GEObasis NRW ( information )
2. ↑ ^{a b c d e} Water directory of the State Office for Nature, Environment and Consumer Protection NRW 2010 (XLS; 4.67 MB) ( Notes )
3. ↑ Stat. = Water stationing
4. ↑ Rivers kilometrage of the Rotbach according to the water station map in Topographical Information Management, Cologne District Government, Department GEObasis NRW ( information )
5. ↑ For a better overview and sorting downstream, a hyphen has been inserted for each river in the water body code (GKZ) after the number “2744”, which stands for the Rotbach .

literature

• Dieter Hofsümmer: Rot- and Bleibach in Erftstadt , yearbook 2014 of the city of Erftstadt, publisher: Kulturamt Erftstadt. Pp. 85-93