Hollbach (Fils)

from Wikipedia, the free encyclopedia
Hollbach
Hohlbach
Data
Water code DE : 238212
location Swabian Alb

Baden-Württemberg

River system Rhine
Drain over Fils  → Neckar  → Rhine  → North Sea
origin Zsfl. Alder / Lange Wiesbachhorn :
at the entrance of Gruibingen
48 ° 36 '3 "  N , 9 ° 38' 23"  O
Q. Erlenbach :
0.5 km south-east of Boßler -Gipfels
48 ° 36 '16 "  N , 9 ° 36' 1 ″  O
Source height Q. Erlenbach :
approx.  705  m above sea level NHN 
Zsfl. Erlen- / Langenwiesbach :
approx.  571  m above sea level NHN
muzzle below the Mühlhausen sewage treatment plant in the valley between the split lanes of the A 8 already in the Bad Ditzenbach area Coordinates: 48 ° 34 '53 "  N , 9 ° 40' 4"  E 48 ° 34 '53 "  N , 9 ° 40 ′ 4 ″  O
Mouth height slightly below  530  m above sea level NHN
Height difference 175 m
Bottom slope 24 ‰
length with Erlenbach :
 7.4 km  name run:
3.8 km
Catchment area 20.179 km² <

The Hollbach , also known as Hohlbach , is a seven-kilometer-long, roughly south-east flowing creek with its longest upper course, Erlenbach , in the district of Göppingen on the Middle Kuppenalb . Its course is predominantly in the municipality of Gruibingen and it flows below Mühlhausen im Täle in the municipality of Bad Ditzenbach from the left into the uppermost Fils .

geography

course

The Hollbach arises in the northern Gruibingen from the confluence of the Erlenbach coming from the west and the Langenwiesbach coming from the north at about 571  m above sea level. NHN . The Erlenbach is the longer and richer catchment area in the upper reaches. From the confluence of the river Hollbach runs through a wide valley that is about 180 meters deeper than the highest edge heights to the southeast, accompanied by the A8 on the left . For about half of its course, it stays in the closed local area of ​​Gruibingen, where the Winkelbach flows in from the center after it, its 3.9 km long and a partial catchment area of ​​5.6 km², the most important tributary. After a bit in the open corridor, he passes a large industrial building and changes to the municipal area of ​​Mühlhausen im Täle, where soon one after the other a short ditch from the west opens up, on whose mouth the ruins of Dürrenberg Castle stand, and then the larger Schönbach opposite Houses of Mühlhausen from the northeast, at the corner of which the Mühlhausen junction of the motorway is located. The autobahn splits here for the second stage of its ascent to the Alb on the Drackensteiner slope , under the ascending route the Hollbach flows for its last 100 meters into the area of ​​the municipality of Bad Ditzenbach and then flows out at just under 530  m above sea level. NHN from the left and, last but not least, west into the uppermost Fils .

The Hollbach, together with its main upper course, Erlenbach, is 7.4 km long and flows about 175 meters below its source.On this route, it experiences a mean bed gradient of about 24 ‰. The Hollbach alone is only 3.7 km long and falls with a mean slope of 8–9 ‰, a height difference of around 31 meters.

Catchment area

The catchment area of ​​the Hollbach is 20.2 km² and, in terms of natural space , lies on the northern Middle Kuppenalb , it borders with its west and northwest side on the foreland of the middle Swabian Alb . There on the line of the Albtrauf or close to it are also its highest elevations: The Sickenbühl ( 789.7  m above sea level ) almost on the southwest corner, Bürg ( 806.5  m above sea level ) in the west, Boßler ( 799.9  m) above sea level ) in the northwest and Kornberg ( 779.7  m above sea level ) near the northern tip.

Behind the western section of the watershed from Sickenbühl to Boßler, the Lindach together with its right tributaries drains the foreland over the Lauter to the Neckar , from Boßler over the Kornberg to Sielenwang at the northeast corner then the Butzbach and the Pfuhlbach or Heimbach with their upper reaches over the lower one Fils to the Neckar. Beyond the eastern border from Sielenwang to the mouth, the immediately following left Fils tributary, Hartel, takes up the runoff, while south of the border from the southeast corner at the mouth to a little beyond the Sickenbühl, only the comparatively short Schönbach runs from the left to the Fils.

In the catchment area, forest and open fields mix closely. The forest is mainly found on the valley slopes, including those of dry valleys, and on individual higher mountains. The small-scale corridor is made up of meadows and fields. Settlement is limited, with the exception of some tourist huts, especially on the Albtrauf, above all to the village of Gruibingen , which lies in the valley widening that begins at the confluence of the upper reaches and extends over the tributary of the Winkelbach, and to small parts of Mühlhausen in the valley around the Exenmühle already near the mouth. The vast majority of the catchment area belongs to the municipality of Gruibingen, a small strip at the southeast end across the Hollbachtal and with the valley of the Schönbach belongs to the municipality of Mühlhausen im Täle, while the mouth and a tiny spandrel there already below in the unpopulated area of ​​the Filstal municipality Bad Ditzenbach lies.

Tributaries

List of tributaries and RiverIcon-SmallLake.svglakes from source to mouth. Length of water, catchment area and altitude according to the corresponding layers on the LUBW online map. Other sources for the information are noted.

Confluence of Hollbachs from its headwaters Erlenbach and Long Wiesbachhorn to about 571  m above sea level. NHN in northern Gruibingen at Haus Im Boden 1.

  • Erlenbach , right and western main line upper course, 3.8 km and 5.3 km². Rises at about 705  m above sea level. NHN about 0.5 km southeast of the Boßler summit and half as far north of the Wolfbühlhaus in the uppermost Geierstal .
    • Umpfenbach , from the right and southwest to about 600  m above sea level. NHN at the first sparse houses in the north-west of Gruibingen, 1.0 km and about 0.9 km². Arises at about 655  m above sea level. NHN on the Ditzlingssteige to the Wolfbühlhaus.
    • Hagenbrunnenbach , from the left and north to about 578  m above sea level. NHN at Rasthaus Gruibingen on the A 8 , 1.5 km and 1.5 km². Arises at about 655  m above sea level. NHN on the southern slope of the Kornberg .
  • Langenwiesbach , left and north branch upper reaches, 1.5 km and 5.3 km². Rises at a little over 610  m above sea level. NHN southeast of the Kornberg next to the L 1217 Gammelshausen –Gruibingen.
    • (Inflow from the Ditschental ), from the left and east to about 683  m above sea level. NHN on the northern edge of Gruibingen near the former oil mill, approx. 0.6 km and approx. 0.5 km². Arises at about 630  m above sea level. NHN still below the tree line. Verdolt on the lower reaches.
  • Winkelbach , from the right and west to about 555  m above sea level. NHN in the lower Gruibingen, 3.9 km and 5.7 km². Arises at about 675  m above sea level. NHN at Steinbrünnele under the Weilheimer hut.
    • (Inflow from the Hanftal ), from the left and west-northwest to about 630  m above sea level. NHN , approx. 0.8 km and approx. 1.0 km². Arises at about 680  m above sea level. NHN northeast of the Weilheimer Hütte. With a little greater length and a little larger catchment area than the main source load, but unstable.
  • Dürrenberggraben , from the right and west-southwest to about 538  m above sea level. NHN a few meters after the municipal boundary from Gruibingen to Mühlhausen im Täle , 0.7 km and about 0.8 km². Arises at about 573  m above sea level. NHN in the valley south of Dürrenberg Castle . After a short run as a ditch in the local area mostly verdolt
  • Schönbach , from the left and northeast to about 535  m above sea level. NHN opposite the end of the Schönbachweg in Mühlhausen, 1.6 km and 2.2 km². Rises at about 600  m above sea level. NHN am Zankhau on the northwest slope of the Leimberg and soon flows out of the forest.

Mouth of the Hollbach from the left and finally west to a little below 530  m above sea level. NHN between the just separated directional lanes of the A 8 to the Drackensteiner slope . The Hollbach with its main upper course Erlenbach is 7.4 km long, from its confluence with the Langenwiesgraben to the name run 3.9 km long and has a catchment area of ​​20.2 km².

traffic

The Federal Highway 8 passes through the valley of the Hagen fountain stream, then briefly the valley of the Erlenbach and Hollbachtal at its portion between the two ball stages of Alba Stieg , the lower the Albtrauf at Aichelberg and the upper from the Filstal over the Drackensteiner tendency to Alb plateau. Between the watershed on the Albtrauf and the mouth of the Hollbach stream, the valley in which it runs has a gradient of around one hundred meters. The motorway is accompanied by the parallel L 1213, which joins the L 1217 in northern Gruibingen. From Gammelshausen in the foothills of the Alb, this climbs south of the Albtrauf, reaches Gruibingen through the high valley of the Langenwiesbach and from there follows the Hollbach to Mühlhausen.

The Boßler tunnel on the new Wendlingen – Ulm railway line is to cross its catchment area in the future, offset slightly to the south-west of the Hollbach valley axis.

geology

Layers of the southern German Jura are pending throughout the area . The top layer in the catchment area lies in the package of the Upper Felsenkalk , Lower Felsenkalk and Lacunosamergel formations of the White Jura . The sources of Erlenbach and Winkelbach arise in the transition area of ​​the Lacunosamergel to the underlying layers of the well- stratified limestone and the Impressamergel formations . These runs soon change to the Brown Jura , in which the Langenwiesbach and Hollbach valley bottoms are also located.

In the karstified White Jura there are several caves in the catchment area.

Nature and protected areas

In the catchment area there are numerous hedges, grasslands and juniper heaths in the corridor. The majority of the catchment area is taken up by the landscape protection area Oberes Filstal-Gemeinde Gruibingen , with the exception of almost only the settlement areas and the large nature reserves Kornberg and Rufstein slopes and the surrounding area and the small, also under nature protection heath on Hillenwang near Gruibingen. Several juniper heaths are also protected as natural monuments . Five water protection areas on the south, west, north and east edges protrude into the catchment area.

See also

Individual evidence

LUBW

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

  1. ↑ a b c d Height according to the contour line image on the background layer topographic map .
  2. ↑ a b c Length according to the waterway network layer ( AWGN ) .
  3. ↑ a b c Catchment area summed up from the sub-catchment areas according to the basic catchment area layer (AWGN) .
  4. ↑ Height according to black lettering on the background layer topographic map .
  5. ↑ Catchment area according to the basic catchment area layer (AWGN) .
  6. ↑ a b c d Catchment area measured on the background layer topographic map .
  7. ↑ a b Length measured on the background layer topographic map .
  8. ↑ Location and description of the caves designated as geotopes in the relevant layer.
  9. ↑ Protected areas according to the relevant layers.

Other evidence

  1. ↑ Hansjörg Dongus : Geographical land survey: The natural spatial units on sheet 171 Göppingen. Federal Institute for Regional Studies, Bad Godesberg 1961. →  Online map (PDF; 4.3 MB)
  2. ↑ Geology roughly based on: Map server of the State Office for Geology, Raw Materials and Mining (LGRB) ( notes )

literature

  • Topographic map 1: 25,000 Baden-Württemberg, as single sheet No. 7323 Weilheim an der Teck, No. 7423 Wiesensteig and No. 7424 Deggingen

Web links