Erlenbach (Schwarzenlachenbach)

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Erlenbach
Data
Water code DE : 23866746
location Swabian-Franconian forest mountains

Hohenloher and Haller level

Baden-Württemberg

River system Rhine
Drain over Schwarzenlachenbach  → Bühler  → Kocher  → Neckar  → Rhine  → North Sea
source at the parking lot at the eastern foot of the Hehlberg
49 ° 5 ′ 12 ″  N , 9 ° 49 ′ 52 ″  E
Source height approx.  432  m above sea level NHN
muzzle after the Sulzdorf sewage treatment plant from the right and southwest in the lower Schwarzenlachenbach Coordinates: 49 ° 6 '9 "  N , 9 ° 51' 6"  E 49 ° 6 '9 "  N , 9 ° 51' 6"  E
Mouth height approx.  350  m above sea level NHN
Height difference approx. 82 m
Bottom slope approx. 30 ‰
length 2.8 km
Catchment area approx. 1.8 km²

The Erlenbach is a creek not quite 3 km long near the village of Sulzdorf in the town of Schwäbisch Hall in the district of Schwäbisch Hall in north-eastern Baden-Württemberg , which flows into the lower Schwarzenlachenbach from the right after about northeast running below the village's sewage treatment plant .

geography

course

The Erlenbach arises in the forest at the eastern foot of the 504  m above sea level. NHN high Hehlberg next to the hiking car park at the K 2627 Obersontheim - Herlebach - Sulzdorf at about 432  m above sea level. NHN on a flat terrain platform from a source with only intermittent water.

It flows northeastwards and deepens its valley quite quickly between the Heidelberg ( 430.9  m above sea level ) on the right and a left ridge, in front of whose faster final drop there is a water reservoir on the height. After a good half a kilometer, he leaves the mountain forest, where the above-mentioned county road crosses him, which previously followed him on the right slope.

First he keeps to the right at the tree line of Heidelberg, then the stream flowing in the corridor is accompanied by a gallery of tall alders and ash trees. Almost a kilometer after its origin, it crosses the so-called Bühlertalstraße L 1060 on its section between Dörrenzimmern and Sulzdorf and then turns onto the north run. In the cleared, mostly plowed, corridor landscape between the two locations, his gallery is soon the only dividing element. At the beginning of the north run a closed road that connects the two places crosses it and a very short inlet opens from the left. The stream now runs in a narrow green strip with pasture ground, beyond which very large fields spread over the flat slopes of the Sauhöhe ( 384.8  m above sea level ) on the left and above all the room fields on the right.

At the end of this section, it passes under the Heilbronn – Crailsheim railway line in a brick passage a little east of the Sulzdorf border , shortly before which there is still a water house on the right slope. Beyond the railway, the brook of the K 2602 Buch -Sulzdorf runs along a small, damp alluvial forest, at the end of which its only larger tributary, the Rautwiesenbach, flows from the left and south-west.

The Erlenbach then flows north-west under the district road, under the building of a former meat and bone meal factory, passes the 0.1 hectare former clearing pond of the property and finally creates a small limestone blade, at the end of which it rises in more or less numerous paths depending on the water flow over a lime sinter platform deposited by himself immediately after the Sulzdorf sewage treatment plant from the right and to around 350  m above sea level. NHN runs up and down the lower Schwarzenlachenbach .

The Erlenbach flows after a 2.8 km long path with an average bottom slope of about 29 ‰ about 82 meters below its origin.

Catchment area

The Erlenbach has a catchment area of ​​about 1.8 km², the upper part of which belongs to the Limpurger Berge sub- area of the Swabian-Franconian Forest Mountains , the rest of which belongs to the Hohenloher and Haller Ebene natural area , here mainly to its sub-area Vellberger Bucht and only with it the small gusset below the district road Buch-Sulzdorf and left of the Unterlauf to its lower area Haller level . The highest proportion of the area is up to 504  m above sea level. Hehlberg high plateau reaching the NHN .

The highest Mesozoic layer in the catchment area is the silica sandstone ( Hassberge Formation ) on this small plateau, under which the layers of Lower Colorful Marl ( Steigerwald Formation ) and reed sandstone ( Stuttgart Formation ) quickly follow one another on the slope . The stream rises below in the Gipskeuper ( Grabfeld Formation ), which covers most of the catchment area and is only replaced beyond the L 1060 by the Lettenkeuper ( Erfurt Formation ) in the two shallow valleys. Only in the last hundred meters or so of the valley does the brook reach the Upper Muschelkalk at the bottom .

On the northwestern watershed from this to the mouth, the easternmost upper reaches of the Hehlbergbach of the Schwarzenlachenbach compete , then and on the longer part of the Schwarzenlachenbach . On the southeast side, the Hirtenbach runs in the same direction as the Erlenbach through Dörrenzimmern to the Bühler , which is a little above the mouth of the Schwarzenlachenbach brook into it.

The whole area belongs to the Sulzdorf district marking. There are only settlements or buildings on the north-western edge to the left of the Rautwiesenbach in the form of the industrial zone around Sulzdorfer Herdweg (K 2627), the newer quarter around the Kreßwiesen street and finally with the animal body disposal facility on the left of the Erlenbach-Unterlauf.

Tributaries and lakes

  • Rautwiesenbach , from the left and finally southwest to less than 367.5  m above sea level. NHN on the K 2602 Buch -Sulzdorf, 0.7 km and approx. 0.4 km². Rises at about 383  m above sea level. NHN a spring pot in the middle of an herbaceous flat depression a little east of the riding facilities on Herdstrasse.
  • RiverIcon-SmallLake.svgPasses the former clarification pond of the animal meal factory to the left of the lower reaches at about 365  m above sea level. NHN , 0.1 ha.

Nature and protected areas

Most of its way, the Erlenbach is a very natural stream. It begins its course as a small, only occasionally water-bearing channel on a natural platform. In the lower part of its original blade it meanders in a wider hollow. After the forest emerges, the initially trench-like, 30–40 cm wide stream is accompanied by tall alders and ash trees. In the area of ​​the state road crossing it shows a straighter course; here are some wet meadows on both sides of the stream and, higher up on the slope, there are poor grasslands , partly bordered by field hedges.

Further down, with the beginning of the north run, the surrounding landscape has been largely cleared since the land consolidation, but the stream runs in a green strip up to a hundred meters wide, partly grazed, in which it winds in small meanders and continues uninterrupted by a tree gallery is accompanied. The stream is deepened here one to one and a half meters and has a sandy bed about a meter wide. After crossing the railway, the accompanying wood widens into a small alluvial forest , which is connected to that of the Rautwiesenbach flowing into it on this side of the railway. In the meantime, the still quite flat creek trough between the fields before the railway crossing has sunk into a notched valley, and after the water has passed the area around the former meat and bone meal factory and the former clarification pond there, a narrow strip of alluvial forest made of old alders and ash trees accompanies the water again. There it divides in sections and falls over small steps in the bed, which is already characterized by sinter deposits , is up to two meters wide and not very deep.

In the last two hundred meters, the valley becomes a narrow, wooded limestone blade. After a section with a waterlogged bank, the stream runs through private property and then crosses into the mouth of the lower Schwarzenlachenbach stream. Here it runs over a sinter bench in alternating paths to the nearby receiving water, in which it drips like a curtain in some places.

Natural monuments in the catchment area are the source pot of the approaching Rautwiesenbach and a meager lawn on the upper Dörrenzimmerner slope side of the Erlenbach itself. The open land between the tree line and the L 1060 is in the nature reserve northern part of the Limpurg Mountains with slopes and parts of terrain between Hessental and Sulzdorf , which is opposite wedges the street and the Heidelberg eastward. The valley basin of the Erlenbach and also that of the approaching Rautwiesenbach downstream of the railway line is located in the Bühlertal nature reserve between Vellberg and Geislingen with side valleys and adjacent areas .

Individual evidence

LUBW

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

  1. ↑ a b c d e Height according to the contour line image on the background layer topographic map .
  2. ↑ a b Length according to the waterway network layer ( AWGN ) .
  3. ↑ a b Catchment area measured on the background layer topographic map .
  4. ↑ a b Height according to black lettering on the background layer topographic map .
  5. ↑ Lake area after the layer standing waters .
  6. ↑ 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 ). The geological map listed under → Literature offers a similar picture,  although it does not cover the entire area.

literature

  • Topographical map 1: 25,000 Baden-Württemberg, as single sheet No. 6825 Ilshofen, No. 6924 Gaildorf and No. 6925 Obersontheim
  • Geological map of Baden-Württemberg 1: 25,000, published by the State Geological Office 1982, sheet no. 6925 Obersontheim with explanatory booklet.

Web links