Kötach

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Kötach
upper course name up to the tributary of the Barbbach : Kötenbach
Data
Water code DE : 11132
location

Baden-Württemberg

River system Danube
Drain over Danube  → Black Sea
confluence from left Sieblengraben and right Schwellgraben south of Tuningen
48 ° 1 ′ 20 ″  N , 8 ° 35 ′ 38 ″  E
Source height approx.  730  m above sea level NHN
muzzle at Geisingen from the left and north into the Danube Coordinates: 47 ° 55 '17 "  N , 8 ° 38' 14"  E 47 ° 55 '17 "  N , 8 ° 38' 14"  E
Mouth height approx.  662  m above sea level NHN
Height difference approx. 68 m
Bottom slope approx. 3.8 ‰
length from the confluence of Sieblengraben / Schmellgraben :
14.2 km
from the Sieblengraben source :  17.9 km
Catchment area 56.784 km²
Residents in the catchment area 4500

The Kötach , initially called Kötenbach after the confluence of its upper reaches , is a left tributary of the Danube , which drains a large part of the Ostbaar . After the Silent Musel, it is the second notable tributary of the Danube and, like this, mostly flows from north to south.

geography

course

The Kötach rises on the southern outskirts of Tuna as a small trickle and initially flows in a south-westerly direction before it turns south and feeds the dammed Sunthauser See. Then it flows through the town of Sunthausen ; for several centuries it divided it into an evangelical north and a catholic south. After leaving Sunthausen, she crosses under the A 864 motorway not far from the Bad Dürrheim motorway triangle .

In its further course it flows past Biesingen , which extends to the right of the Kötach. It then separates the settlement on the Hörnle from the center of Oberbaldingen , which is a little further on the left. Then further south it passes the Unterbaldingen, which is also on the left . South of Unterbaldingen, it receives the treated wastewater from the Ostbaar from the Kötachtal sewage treatment plant .

It then flows through the Kötach Valley, which has now sunk into the Baaralb, over a length of around five kilometers, and in this it crosses twice under the A 81 motorway . On the eastern edge of the valley rises the more than 900 meter high ridge of the Baldinger Berg, on the western first the Unterhölzer Forest, before the Wartenberg , an extinct volcano , announces the town of Geisingen . There the Kötach flows into the still young Danube. However, since this river loses most of the water to the Rhine due to several seepage downstream of the Danube , most of the Kötach water reaches the North Sea and not the Black Sea .

Catchment area

The Kötach has a catchment area of ​​56.8 km² which , in terms of natural space , is predominantly located in the Baar and only belongs to the neighboring natural area of Baar-Alb and Upper Danube Valley at the lowest course just before Geisingen . Being at 915.2  m above sea level. NHN highest point is on the northern spur Blathalde der Baaralb east of Unterbaldingen on the eastern watershed. It borders in turn on the catchment areas of the following neighboring waters:

  • beyond the short northern water divide near Tuningen, the short Mühlbach flows to the upper Neckar in the Schwenningen district of Villingen-Schwenningen
  • in the northeast, the catchment area of ​​the Schönbach , which feeds the Danube via the Elta, borders very briefly , and longer that of the Krähenbach , a direct tributary of the Danube;
  • in the east the Talbach or Amtenhauser Bach predominantly competes with the Danube and only recently a small tributary at the mouth of Geisingen;
  • behind the Unterhölzer forest in the southwest, the Weihergraben flows next to smaller streams above the Kötach to the Danube;
  • on the rest of the west side, an old run from this and the Stille Musel take up the drain and also lead it to the Danube.

Tributaries and lakes

Hierarchical 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.

  • Sieblengraben, left main strand upper course, 3.7 km
    • Schwarzer Graben, from the right in Tuningen , 1.1 km
  • Schwellgraben, right branch line upper course, 2.2 km
  • Barbbach, from right to Tuningen- Untere Mühle , 1.8 km
  • Hessengraben, from the right at the influence in the Sunthauser See, 1.7 km
  • RiverIcon-SmallLake.svgFlows through at 709.9  m above sea level. NHN the Sunthauser See , a retention basin with permanent retention of 5.0 ha
  • Weihaldengraben, from the left in the Sunthauser See, 3.1 km and 2.3 km²
  • Breitegertbach, from the left immediately to Bad Dürrheim - Sunthausen , 3.3 km and 3.3 km²
    • (Bach from the Frauenhölzle ), 1.0 km from the right
    • Niederbergbach, from the left opposite Sunthausen, 1.2 km
  • Hungerbühlbächle, from the right, 1.8 km
  • Ortsbach, from the right in front of the Mühle residential area near Bad Dürrheim- Biesingen , 2.6 km
  • Mostelgraben, from the right in front of the settlement on the Hörnle of Bad Dürrheim- Oberbaldingen , 2.3 km
    • Riedwiesengraben, from the left opposite the forest island Setze , 0.8 km
  • Öfinger Bach, from the left near Oberbaldingen, 3.9 km
    • Seebengraben, from the right just before the outskirts of Oberbaldingen, 1.6 km
  • Wolfhaggraben, from left to the sports fields in Oberbaldingen, 1.1 km
  • (Graben von der Höhe ), from the left through northern Bad Dürrheim- Unterbaldingen , 1.6 km
  • Drachenbrunnengraben, from the right just after the previous one, 1.8 km
  • Mulzenriedgraben, from the right at the Ziegelei von Unterbalbingen residential area , 2.0 km
    • Sulzentalgraben, from the right just before the mouth, 1.4 km
  • Winterhaldengraben, from the left at the brickworks, 2.0 km
  • RiverIcon-SmallLake.svgPasses the Niederwiesensee right on the run opposite the sewage treatment plant to Unterbalbingen, 3.1 ha
  • Eschgraben, from the left opposite the southern tip of the previous one, 1.5 km
  • Waldbach, from right to Niederwiesensee, 1.5 km
  • Degelwiesenbach, from the right, 2.2 km
    • Schabelgraben, from the right at the entrance of the Degelwiesenbach into the Kötachaue, 0.8 km
    • Dreilärchengraben, from the right before crossing under the motorway through the Degelwiesenbach, 1.0 km
  • Klausener Talbach, from the left just before Geisingen , 1.9 km

Individual evidence

LUBW

Official online waterway map with a suitable section and the layers used here: Course and catchment area of ​​the Kötach
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 c Length according to the waterway network layer ( AWGN ) .
  3. ↑ Catchment area after the layer aggregated areas 05 .
  4. ↑ Height according to black lettering on the background layer topographic map .
  5. ↑ Lake area after the layer standing waters .
  6. ↑ Catchment area according to the basic catchment area layer (AWGN) .
  7. ↑ Height according to the blue lettering on the background layer topographic map .

Other evidence

  1. ↑ Friedrich Huttenlocher : Geographical Land Survey: The natural space units on sheet 178 Sigmaringen. Federal Institute for Regional Studies, Bad Godesberg 1959. →  Online map (PDF; 4.3 MB)
  2. ^ Alfred G. Benzing: Geographical land survey: The natural space units on sheet 186 Konstanz. Federal Institute for Regional Studies, Bad Godesberg 1964. →  Online map (PDF; 4.1 MB)

literature

  • Topographic map 1: 25,000 Baden-Württemberg, as single sheet No. 7917 Villingen-Schwenningen Ost and No. 8017 Geisinge

Web links