Rankbach

from Wikipedia, the free encyclopedia
Rankbach
Rankbach in Renningen

Rankbach in Renningen

Data
Water code DE : 2384486
location Schönbuch and Glemswald

Upper pig

Baden-Württemberg

River system Rhine
Drain over Würm  → Nagold  → Enz  → Neckar  → Rhine  → North Sea
source in the Glemswald approx. 1 km north of the Sindelfinger Wald service area on the federal highway 8
48 ° 45 ′ 7 ″  N , 9 ° 2 ′ 0 ″  E
Source height approx.  485  m above sea level NHN
muzzle north of Weil der Stadt from the right into the middle Würm coordinates: 48 ° 45 '46 "  N , 8 ° 52' 39"  E 48 ° 45 '46 "  N , 8 ° 52' 39"  E
Mouth height 385.8  m above sea level NHN
Height difference approx. 99.2 m
Bottom slope about 6 ‰
length 16.7 km
Catchment area 51.894 km²

The Rankbach is a brook over 16 kilometers long in the district of Böblingen in central Baden-Württemberg , which flows roughly westward on the northern edge of Weil der Stadt from the right into the central Würm .

geography

course

The Rankbach rises inconsistently in the western Glemswald on the federal highway 8 about one kilometer north of the Sindelfinger Wald service area at about 485  m above sea level. NHN . It flows first about a kilometer southwest through the forest and then into the upper Hölzersee , which is about 1.9 hectares larger and has a second, about as long and also unstable tributary from the direction of 517.1  m above sea level. NHN high Warmbronner Kopf in the northwest. After this first lake, the Rankbach runs through immediately at 442.4  m above sea level. NHN the only 0.3 ha large lower lake, then it is immediately crossed by the state road L 1185 Stuttgart - Büsnau - Magstadt . In the beginning of the valley floodplain of the long and slender Hölzertal bay , it swings to a westerly direction that has been maintained for a longer period and runs through the Upper Hölzertal nature reserve, at a distance from the main road at the foot of the slope .

After the nature reserve, the valley floor expands like a funnel and the stream still runs through Magstadt westwards. In the center of the village, it is fed by the Erbach, only about one and a half kilometers long, coming from the southeast . From here the stream turns into a slow curve to the right, in the course of which it is approached by the Nolgraben, which is now over three kilometers long, from the west- south- west, around the city limits of Renningen . Towards the outskirts of Renningen, it crosses under the federal road 295 , where the L 1185 runs from Magstadt to the left of the brook.

The Rankbach, now almost nine and a half kilometers long, flows on Leonberger Straße in Renningen at 402  m above sea level. NHN together with the six-kilometer-long maize trench , which rises eastward beyond Böblingen - Warmbronn, also in the western heights of the Glemswald, a little north of the Warmbronner Kopf. With a partial catchment area of ​​eleven and a half square kilometers, the maize trench is its most important tributary, in the direction of which it now continues to flow. Below the settlement boundary of central Renningen, it is spanned by the Rankbachbahn bridge , which runs in the valley from Magstadt and ends in the municipal train station on the right slope of the Württemberg Black Forest Railway .

This railway line then crosses the valley, which is initially quite wide, at a flat angle, but the settlement area of ​​the Malmsheim district begins below the brook bridge , from which the floodplain narrows sharply, whereupon the Rankbach then runs south-west in two wide-reaching valley meanders. On this section, the Black Forest Railway crosses the stream twice before and after the Rankmühle; on the slopes there is partly forest again.

In the last few meters, the Rankbach crosses into the urban area of Weil der Stadt and then flows at 385.8  m above sea level. NHN shortly after the Planmühle located on the northern edge of the city itself and in front of its Merklingen district, which lies further down the river, from the right and finally northeast into the middle Würm .

The 16.7 kilometer long Rankbach flows about 99 meters below its origin, its mean bottom slope is about 6 ‰.

Catchment area

The Rankbach drains a 51.8 km² area approximately westwards to the middle Würm , which in terms of natural space lies with its eastern parts in the wooded lower area Glemswald-Randhöhen of Schönbuch and Glemswald and to the west of it in the predominantly open Oberer Gäuen the lower areas Renninger Becken and then Würm-Heckengäu belongs to, until the Rankbach flows into the last affected sub-area, Würmbucht .

The greatest heights in the catchment area are on the ridge to the left of the Hölzer Valley, where at one point the maximum of 532.6  m above sea level. NHN is reached. Somewhat within the central eastern watershed, the Warmbronner Kopf rises in isolation up to 517.1  m above sea level. NHN .

That of the Rankbach in turn borders on the catchment areas of the following neighboring waters:

  • In the west the receiving Würm flows before and after the Rankbach estuary without significant other right tributaries, with the exception of the Heimsheimer Kotzenbach at the bottom .
  • In the northwest, beyond a short stretch of watershed, the Strudelbach drains the area beyond to the lower Enz .
  • In the northeast the Wasserbach leads first , further to the southeast to the Glems receiving it, the drain on the other side also leads to the lower Enz.
  • South of the Rankbach, the Schwippe drains into the Würm above it.

geology

The Rankbach rises approximately at the layer boundary of the Upper Bunten Marl ( Mainhardt Formation ) to the overlying Stubensandstein ( Löwenstein Formation ), the ridges of which lie like two arches open to the west around the erosion bays of the maize trench and further south of the Upper Rankbach. The valley floor reaches the reed sandstone ( Stuttgart formation ) before the Hölzersee. After this he runs to Magstadt in the Gipskeuper ( Grabfeld formation ). There, on the left slope of the valley, there is the Upper Muschelkalk , cultivated in a gravel plant , while opposite on the Glemswaldsporn between the upper Rankbach and Maisgrabental there is still extensive reed sandstone. On Renningen, layers of the deeper Keuper also temporarily set in on the left edge of the valley . After Renningen, however, the whole valley lies in the Upper Muschelkalk and from the start of the lower course meander in Malmsheim to the mouth in the middle ; the lower one begins a little downwards only in the valley of the receiving Würm.

The original tertiary stratification is disturbed by three fault lines running from east-southeast to west-northwest. The two running close to each other in the southwest border a Horst von Lettenkeuper ( Erfurt formation ), which morphologically extends from the left valley spur of the Hölzertal near Magstadt to the valley and leaves it as a tectonically marked zone below again over the left edge heights towards Malsheim . The north-eastern third runs from the eastern watershed a little north of the Rankbach origin, roughly on the line of the Krampfrain and the Warmbronner Kopf towards Warmbronn, where it then breaks out.

An island of loess sediment from Quaternary deposits lies on the spur between the upper Rankbach valley and the Maisgrabental valley north of the Holzertal valley; this younger sediment layer can also be found in a large area around Renningen. The stream-accompanying strip of Quaternary valley filling begins in the upper Rankbachtal before the Hölzersee, in the Maisgrabental east of Warmbronn, both widen to the confluence of the streams in Renningen, the continuation then narrows towards the onset of the Middle Muschelkalk in Malmsheim.

Namesake

The Rankbachbahn and the Renningen sports and event hall Rankbachhalle are named after the Rankbach .

Individual evidence

LUBW

Official online waterway map with a suitable section and the layers used here: Course and catchment area of ​​the Rankbach
General introduction without default settings and layers: State Institute for the Environment Baden-Württemberg (LUBW) ( notes )

  1. ↑ Height according to the contour line image on the topographic map background layer .
  2. ↑ a b c Height according to the blue lettering on the background layer of the topographic map .
  3. ↑ Length according to the waterway network layer ( AWGN ) .
  4. ↑ Catchment area summed up from the sub-catchment areas according to the basic catchment area layer (AWGN) .
  5. ↑ a b Height according to black lettering on the background layer topographic map .

Other evidence

  1. ^ Friedrich Huttenlocher , Hansjörg Dongus : Geographical land survey: The natural spatial units on sheet 170 Stuttgart. Federal Institute for Regional Studies, Bad Godesberg 1949, revised 1967. →  Online map (PDF; 4.0 MB)
  2. ↑ Geology according to the geological map listed under →  Literature . A rough overview also provides: Mapserver of the State Office for Geology, Raw Materials and Mining (LGRB) ( notes )

literature

  • Topographical map 1: 25,000 Baden-Württemberg, as single sheet No. 7119 Rutesheim (only catchment area) , No. 7219 Weil der Stadt and No. 7220 Stuttgart Südwest
  • Geological map of Stuttgart and the surrounding area 1: 50,000, published by the Geological State Office in Baden-Württemberg in 1959, with explanatory booklet.

Web links

Commons : Rankbach  - Collection of images, videos and audio files