Michelbach (Brettach)

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Michelbach
Data
Water code DE : 2388294
location Kocher-Jagst Plains

Baden-Württemberg

River system Rhine
Drain over Brettach  → Jagst  → Neckar  → Rhine  → North Sea
source between Gerabronn and Langenburg- Ludwigsruhe on the edge of a forest island
49 ° 15 ′ 31 ″  N , 9 ° 54 ′ 7 ″  E
Source height approx.  475  m above sea level NHN
muzzle at Gerabronn- Liebesdorf from the right and north-northwest in total to the lowest Brettach coordinates: 49 ° 13 '58 "  N , 9 ° 54' 30"  E 49 ° 13 '58 "  N , 9 ° 54' 30"  E
Mouth height 314  m above sea level NHN
Height difference approx. 161 m
Bottom slope approx. 40 ‰
length 4.1 km
Catchment area 6.658 km²

The Michelbach is a 4 km long brook mainly in the area of ​​the small town Gerabronn in the district of Schwäbisch Hall in north-eastern Baden-Württemberg , which flows into the lower Brettach from the right and around north-north-west near the hamlet of Liebesdorf .

geography

course

The Michelbach arises at about 475  m above sea level. NHN on the edge of a forest island between the Rotwiesen corridor and further away the outskirts of Gerabronn in the east and the Pfingstwasen corridor and further away the former Ludwigsruhe Castle in the city of Langenburg in the west. The stream flows in a natural hollow and is accompanied by a dirt road to the southwest until it is crossed by the K 2515 Ludwigsruhe-Michelbach, which then initially continues on the left lower slope of its valley and follows it almost to the mouth. Shortly thereafter, a ditch flows out of the Ludwigsruhe Castle Park from the right, which drains a pond there and, like all subsequent tributaries, only periodically carries water.

The Michelbach then flows more and more south and, after another tributary on the right and now accompanied by the field, reaches the northern edge of the Gerabronner village Michelbach an der Heide , which after a damming into a pond on the outskirts under the county road initially flows south until it flows through in the center of the village at the intersection of the Kreisstraße with the L 1033 from Gerabronn in the east to Langenburg in the west to the southeast. After the lower edge of the village, which soon follows, the valley deepens steeply to a typical landscape blade that is overgrown with forest. After a short valley meander to the west, at the strongest point of which a ditch from the plateau opens out from its short underflow secondary blade from the right, the slowly funnel-like widening forest valley passes southeast under the Kupferhof farm on the left edge of the hill.

Towards the end of the Klingenwald, the Michelbach crosses under the Nebentalserpentine of the L 1037 running on the right slope of the Brettach river from Gerabronn to Elpershofen, where the district road that runs alongside the stream ends and the L 1041 begins to Gerabronn- Seibotenberg . After a further 300 meters along this, the Michelbach crosses the small hamlet of Liebesdorf von Gerabronn and finally flows out at 314  m above sea level. NHN from the right into the Brettach , which even after just a little over a kilometer south of the course, now joins the Jagst near Elpershofen .

After a 4.1 km long run, the Michelbach flows with a mean slope of 40 ‰, about 161 meters above sea level below its origin.

Catchment area

The Michelbach has a catchment area of ​​6.7 km², which , in terms of natural space , belongs entirely to the sub-area Bartenstein-Langenburger Platten of the Kocher-Jagst plains .

In the area, the Lettenkeuper cover ( Erfurt formation ) of the shell limestone is still completely preserved in the subsoil except in the valley basins. The Michelbach already flows after the inlet of the trench from the Ludwigsruhe Palace Park in the Upper Muschelkalk , the later streams partly only at their middle course. The Michelbach reaches the Middle Muschelkalk only last at the entrance to the Brettachstal at the crossing under the L 1037; in the height of which it also flows.

A number of sinkholes in the catchment area, some of which are still in the Lettenkeuper and some of them only in the Upper Muschelkalk, indicate the strong karstification of the shell limestone , as does the instability of the tributaries . Some of the sinkholes are natural monuments and designated as geotopes, some of them temporarily hold water and are wetlands.

Except for the deep cut of the Michelbach lower course, the area is an undulating plateau, which at the edge of its northern part several times heights of a little above or below 314  m above sea level. Reached NHN . Most of this plateau is open and is under the plow, but there are several forest islands, mostly only small; the largest includes most of the Ludwigsruhe castle park, the second largest part of the strut on the western watershed, on which the prehistoric Langenburger Viereckschanze is located.

In turn, the catchment areas of the following neighboring waters are adjacent:

  • The terrain behind the southern watershed drops a little after the mouth of the Jagsttal, where only two mostly dry slope blades run from it.
  • Beyond the southwest, a somewhat longer, also unstable brook arises, which through the Binselberger Klinge reaches the Jagst near Großhürden a little further down .
  • The Ziegelbach rises in the west across the Strut and flows into Bächlingen .
  • In the northwest, the upper catchment area of ​​the Schindbach borders at Atzenrot.
  • In the north-northwest lies the headwaters of the Holderbach .
  • In the north, the Rötelbach and then its first tributary Herresgraben , which arise nearby, take up the drain to the other side.

All of the neighboring streams mentioned so far feed one after the other the Jagst below the Brettach estuary, the two following its tributary Brettach before the Michelbach.

The catchment area is sparsely populated. In front of the beginning of its Unterlaufklinge lies the village of Michelbach an der Heide am Michelbach, at its mouth the hamlet Liebesdorf , which belongs to the small town of Gerabronng, as well as the farm Kupferhof on the left above the blade. In addition, there is only the hamlet of Ludwigsruhe (former castle) in the small town of Langenburg in the far north. Around one fifth of the catchment area in the north-west and west belongs to Langenburg, the entire remainder to Gerabronn; this larger part is mainly in the suburb of Michelbach.

Tributaries and lakes

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

Source of the Michelbach at about 475  m above sea level. NHN between the outskirts of Gerabronn in the east-southeast and Langenburg - Ludwigsruhe in the west-northwest on the edge of a forest island between Rotwiesen left and Pfingstwasen right. The stream, which begins its course in a south-westerly direction, bends a long curve to the left up to the mouth.

  • RiverIcon-SmallLake.svgFlows through at about 467  m above sea level. NHN group = "LUBW" /> a small pond just before the road K 2515 Ludwigsruhe-Gerabronn- Michelbach an der Heide , under 0.1 ha.
  • (Ditch from the castle park of Ludwigsruhe), from the right and northwest to about 463  m above sea level. NHN a little below the K 2515, approx. 0.9 km and approx. 0.7 km². Arises at about 478  m above sea level. NHN in the western castle park. Inconsistent.
    • RiverIcon-SmallLake.svgFlows through at about 475  m above sea level. NHN the pond in the castle park, over 0.2 ha.
  • (Ditch from the ground ), from the right and west-northwest to about 458  m above sea level. NHN after the first agricultural building in Gerabronn- Michelbach still in an external location, approx. 0.5 km and over 0.4 km². Arises at about 469  m above sea level. NHN at the eastern tip of the forest island in Grund . Inconsistent water-bearing dirt road ditch in a natural valley basin.
  • RiverIcon-SmallLake.svgFlows through to about 455  m above sea level. NHN an elongated small pond on the northern edge of Michelbach an der Heide, 0.1 ha.
  • (Ditch from the farm fields ), from the right and west to about 400  m above sea level. NHN shortly after the place Michelbach in the now wooded lower reaches of the Michelbach, approx. 0.9 km and approx. 0.6 km². Arises in an open course at about 460  m above sea level. NHN on the eastern edge of the Baurenäckern . Incessantly water-bearing ditch in a natural valley basin, mostly next to a field path, finally flowing in the forest in a steep limestone blade.

Mouth of the Michelbach from the right and finally northwest to 314  m above sea level. NHN on the edge of Gerabronn- Liebesdorf in the lowest Brettach , which then runs just over a kilometer south to its confluence with the Jagst . The Michelbach is 4.1 km long and has a 6.7 km² catchment area.

Nature and protected areas

From the point where it runs next to the L 2515 to the beginning of Michelbach, the Michelbach is a completely loop-free ditch without any trees or bushes on the bank. In the village he is condemned. Below in its blade it flows about 2 m wide in a 6–8 m wide bed of rubble, in which it also disappears in sections. The rocky slopes are up to 2 m high in rock. During heavy rain and the subsequent flooding in the region at the end of May 2016, the brook dug itself wider and deeper and most of the previous slopes were eroded or covered with debris.

The Unterlaufklinge from the lower edge of Michelbach is part of the landscape protection area Mittleres Jagsttal with side valleys and adjoining areas . A Langenburg water protection area extends in and around the Strut from the west a little way into the catchment area.

Individual evidence

LUBW

Official online waterway map with a suitable section and the layers used here: Course and catchment area of ​​the Michelbach
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 Height according to black lettering on the background layer topographic map .
  3. ↑ a b Length according to the waterway network layer ( AWGN ) .
  4. ↑ a b Catchment area after the basic catchment area layer (AWGN) .
  5. ↑ Geotopes and natural monuments according to the relevant layers; the descriptions of the last are usually only found in the more or less congruent biotopes according to their relevant layer.
  6. ↑ a b Length measured on the background layer topographic map .
  7. ↑ Lake area after the layer standing waters .
  8. ↑ a b Catchment area measured on the background layer topographic map .
  9. ↑ Protected areas according to the relevant layers, nature partly according to the biotope layer .

Other evidence

  1. ↑ Wolf-Dieter Sick : Geographical land survey: The natural space units on sheet 162 Rothenburg o. D. Deaf. Federal Institute for Regional Studies, Bad Godesberg 1962. →  Online map (PDF; 4.7 MB)
  2. ↑ Geology according to the layers for Geological Map 1: 50,000 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. 6725 Gerabronn

Web links