Franzenbach (Blind Red)

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Franzenbach
Data
Water code DE : 2386328
location Swabian-Franconian forest mountains

Baden-Württemberg

River system Rhine
Drain over Blind red  → Kocher  → Neckar  → Rhine  → North Sea
source in the Hofwiesen on the eastern edge of Pommertsweiler
48 ° 55 ′ 56 ″  N , 9 ° 59 ′ 42 ″  E
Source height approx.  428  m above sea level NHN
muzzle east of Pommertsweiler from the right and east into the lower Blinde Rot Coordinates: 48 ° 55 ′ 50 ″  N , 10 ° 1 ′ 0 ″  E 48 ° 55 ′ 50 ″  N , 10 ° 1 ′ 0 ″  E
Mouth height 385.5  m above sea level NHN
Height difference approx. 42.5 m
Bottom slope approx. 24 ‰
length 1.7 km
Catchment area 1.601 km²

The Franzenbach is a creek not quite two kilometers long in the Pommertsweiler district of the municipality of Abtsgmünd in the Ostalbkreis in northeastern Baden-Württemberg , which flows east of the village of Pommertsweiler into the valley from the right and west into the lower Adelmannsfelder or Blinde Rot .

geography

course

The Franzenbach is fed by four larger springs, all of which are located approximately on the eastern edge of the village of Pommertsweiler at heights of up to 445  m above sea level. NHN arise and their processes then converge in a fan shape to the east. The deepest at 428  m above sea level. NHN is the origin of the upper reaches of the Franzenbach itself, which arises in the field wedge of the Hofwiesen between Hardtstraße Pommertsweilers in the north and an older settlement core of the village around Untere Straße in the southwest. The stream mostly flows past meadows to the east and only then collects the Hartfeldbach approaching from the left and northwest , which arises near the north entrance of the village, and shortly afterwards the Hofwiesengraben in the corridor , which is at a desolate castle stable near the Untere Straße its course begins. Both tributaries are about half a kilometer long.

The Franzenbach then continues to run through the hillside forest west of the Blinde-Rot-Valley to the east in a rather flat valley between the Jungholz valley in the north and Gewande in the south. The Brunnenfeldbach flows into it from the southwest , its 1.1 km length and approx. 0.5 km² sub-catchment area, its most important tributary. On the right of the slope, a forest path accompanies him from the southern Pommertsweiler to the Rottal, and finally one on the left slope from the Jungholz . For the last 150 meters over the Aue der Rot it leaves the forest and then flows between two of these valley paths on both sides in the nature reserve Tal der Blinden Rot from the right and west at about 383  m above sea level. NHN in the lower blind red .

The Franzenbach is 1.7 km long on its main strand, flows about 43 meters below its main source and therefore has an average bed gradient of about 24 ‰.

The northernmost upper reaches of the Hartfeldgraben are usually accompanied by a tree gallery and run through half a dozen small ponds. The banks of the upper Franzenbach itself and its nearest source brook Hofwiesengraben on the right are mostly bare, where these brooks do not even run underground. An accompanying gallery begins right at the source of the Brunnenfeldbach, this stream then soon runs with small changes of direction in the forest under forest trees. In its forest valley, the Franzenbach flows in pronounced meanders, at the end of which its bed, in which the typical coarse-sand-gravelly sediment is found, is one to one and a half meters wide.

Catchment area

The about 1.6 square kilometers, dehydrated from Franzbach area lies close to its southern edge in the subspace Ellwanger Berge of the natural environment Swabian-Franconian Forest . The adjacent catchment areas are those of the Fürtlebach in the north, a somewhat smaller former tributary of the Blinden Rot , then near the mouth in the northeast of the much smaller Jungholzbach . Down the estuary, the equally small Rotwiesenbach competes with the Blinden Rot in the southeast , followed by the more catchment-rich Fischbach with its tributaries in the south . The entire western watershed borders on the catchment area of ​​the uppermost Bühler , which flows much further down, like the Blinde Rot, directly into the Kocher ; this is usually the next open water itself, only in the north-west does the small Wiesenweiherbach flow from the sheath . This hydrologically most important watershed also runs over the highest point of the Franzenbach catchment area at around 475  m above sea level. NHN at the water tower in Pommertsweiler.

The area is divided roughly into one sixth of the settlement area of Pommertsweiler in the far west, half of the field in the middle and one third of the forest in the far east on the waste in the Rottal. The only settlement in the catchment area is Pommertsweiler on the watershed to the Bühler, which drains with a slightly larger proportion via the Franzenbach and its tributaries. The catchment area is within the Pommertsweiler district marking of Abtsgmünd .

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.

Origin of the Franzenbach at about 428  m above sea level. NHN in the Wiesenkeil Hofwiesen south of Hardtstrasse from Pommertsweiler.

  • Hartfeldbach , from the left and northwest to about 417  m above sea level. NHN between a field shed and the beginning of the blade forest, 0.5 km and approx. 0.2 km². Rises at about 445  m above sea level. NHN in Hartfeld east of the country inn at the northern entrance to the village. The Franzenbach itself is insignificantly longer up to this tributary, but somewhat richer in catchment area.
    • RiverIcon-SmallLake.svg Flows through a series of first four, then three ponds, a total of 0.3 ha.
  • Hofwiesenbach , from the right and west to about 415  m above sea level. NHN one hundred meters after the previous one just before the beginning of the blade forest, 0.5 km and about 0.1 km². Arises at about 432  m above sea level. NHN at a castle stable in front of the south-eastern outskirts near the end of Untere Straße.
  • (Waldbach), from the left and north to about 404  m above sea level. NHN already in the forest, approx. 0.2 km and less than 0.2 km². Rises at about 414  m above sea level. NHN at a corner of the corridor in the forest.
  • Brunnenfeldbach , from the right and southwest to almost 400  m above sea level. NHN in the middle Waldklinge next to the path into the Rottal, 1.1 km and approx. 0.5 km². Arises at about 432  m above sea level. NHN near the L 1073 to Wilflingen im Brunnenfeld together with its tree gallery.

Mouth of the Franzenbach from the right and west to 385.5  m above sea level. NHN about 1.9 km east of the center of Pommertsweiler in the lower Blinde Rot . The Franzenbach is 1.7 km long and has a 1.6 km² catchment area.

geology

Middle Keuper layers are everywhere in the area and the vast majority of the Stubensandstein ( Löwenstein Formation ); soon after the inflow of the Brunnenfeldbach, the Franzenbach cuts into the Upper Bunten Marl ( Mainhardt Formation ).

Protected areas

The Franzenbach flows here at the lower reaches of the Blinden Rot in the nature reserve Tal der Blinden Rot, which encompasses the Rotaue . The entire area is part of the Swabian-Franconian Forest Nature Park , whose eastern border roughly follows the route of the Blinden Rot.

Individual evidence

LUBW

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

  1. ↑ a b c Height according to the contour line image on the background layer topographic map .
  2. ↑ a b Height according to htau lettering on the background layer topographic map .
  3. ↑ a b Length according to the waterway network layer ( AWGN ) .
  4. ↑ a b Catchment area according to the basic catchment area layer (AWGN) .
  5. ↑ Lake area after the layer standing waters .
  6. ↑ Catchment area measured on the background layer topographic map .
  7. ↑ a b c length according to the layer water body name .
  8. ↑ a b Length measured on the background layer topographic map .

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 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. 7025 Sulzbach-Laufen and No. 7026 Ellwangen (Jagst) West

Web links