Nonnenbach (Lake Constance)

Nonnenbach near Dentenweiler: Butzenbach
Nonnenbach, below the Nonnenbach School in Kressbronn
Data
Water code	DE : 215194
location	District of Ravensburg , Lindau , Lake District
River system	Rhine
Drain over	Rhine  → North Sea
source	at Achberg - Isigatsweiler 47 ° 37 '34 "  N , 9 ° 43' 22"  O
Source height	approx.  530  m above sea level NN
muzzle	in Kressbronn in Lake Constance Coordinates: 47 ° 35 ′ 13 ″  N , 9 ° 35 ′ 14 ″  E 47 ° 35 ′ 13 ″  N , 9 ° 35 ′ 14 ″  E
Mouth height	395  m above sea level NN
Height difference	approx. 135 m
Bottom slope	approx. 8 ‰
length	16.8 km
Catchment area	26.204 km²
Right tributaries	Fallenbach
Small towns	Lindau
Communities	Achberg , Wasserburg , Kressbronn

The Nonnenbach is a nearly 17 km long, a total of about west-southwest of ongoing tributary of Lake Constance in Kressbronn in Baden-Württemberg Bodenseekreis . Its name is derived from the old German word Ungenbach = Unkenbach .

course

The stream rises southwest of the village of Isigatsweiler, which belongs to the municipality of Achberg, and initially flows in a southwestern direction, past Siberatsweiler , Rudenweiler , Saßenweiler , Dentenweiler , Rengersweiler and Hörbolz . From Bechtersweiler and passing under the federal highway 31, it flows - forming the municipalities ( Wasserburg districts Hengnau and Selmnau - Kressbronn ) and the state border (Bavaria – Baden-Württemberg) - in a westerly direction to Kressbronn on Lake Constance. Past the districts of Krummensteg and Arensweiler, the Nonnenbach flows through the center of Kressbronn and finally flows into Lake Constance at the lido.

In old maps, the Nonnenbach in the middle course is also referred to as Gränzbach or Grenzbach .

On the way to the mouth, the stream is consistently accompanied by lush bank vegetation, mainly alder , ash and willow . It largely crosses small forests and agricultural land. The roots of the trees, some of which protrude into the stream, provide a habitat for young fish and small organisms such as river flea shrimp .

Tributaries

From the source to the mouth, the Nonnenbach takes in the following tributaries in addition to many unnamed streams:

• Outflow of the Hermannsberger Weiher (l), near Rudenweiler
• Drainage of the Degersee (r), near Hörbolz
• Ditch from the Burgstallmoos (l), northwest of Hengnau
• Fallenbach (r), center of Kressbronn

use

tannery

A tannery was once operated on what is now the green space on Kressbronner Hauptstrasse . To water the hides and skins, the tanner needed a lot of water that was taken from the Nonnenbach. The wastewater reached Lake Constance unhindered and treated with the Nonnenbach.

Mills

Four mills are or were operated on the course of the Nonnenbach . The Martinsmühle is located just outside of Bechtersweiler ; electrical energy is still generated here with the help of water power. In the municipality of Kressbronn, the water of the Nonnenbach used to drive three mills. The upper , middle and lower mill are still there, the middle mill is still in operation. A street name, a weir system and the former mill pond bear witness to the Untermühle - its history can be traced back to around 1400.

• 

  Obermühle
  postcard around 1906

• 

  Obermühle
  millstone

• 

  Lower mill
  outlet weir

• 

  Untermühle
  Weiher, today LSG

• 

  Under mill

• 

  Untermühle
  millstone

Protected areas

FFH area

The mouth of the nuns Bach it is part of the reported on 1 January 2005, a total of 1,363.4 hectares large FFH area " Bodenseeufer landscape east Friedrichshafen " (SG no. DE8423341).

Landscape protection areas

In the area northeast of the center of Kressbronn, the valley of the Nonnenbach is part of the landscape protection area " Lake District and Hügelland south of the Argen and Nonnenbachtal " (SG number 4.35.034, total 968 hectares) designated by ordinance of June 19, 1986 of the Tübingen regional council. In the estuary area, the Nonnenbach is part of the 35.3 hectare protected landscape area " Württembergisches Bodenseeufer " (SG-No. 4.35.001) , which was designated on April 13, 1940 .

Biotopes

Explanation

• SG no. : Protected area number according to the State Institute for the Environment, Measurements and Nature Conservation Baden-Württemberg (LUBW) and Environmental Object Catalog Bavaria (UOK)
• Name : official name of the biotope according to LUBW and UOK
• Location : City, municipality or district that is closest to the respective biotope
• Location : "Gm." = District ; "Gw." = Won ; "Fs." = Parcel
• Ko. : Indication of the geographical coordinates of the respective biotope; linked, opens card
• Natural area : "WA" = West Allgäu hill country ; "BB" = Lake Constance basin
• Size : Area in hectares (1 hectare = 10,000 m²) of the respective biotope
• Recording : Date of the respective recording
• Comments : Descriptions etc. of the respective biotope
• Image : Photo of the respective biotope

Achberg and Tettnang

The following biotopes are identified along the Nonnenbach in the Achberg municipality and Tettnang urban area from the source to the state border to Bavaria :

SG no.	Surname	place	location	Ko.	Natural space	Size [ha]	Capture	Remarks	image
183244360356	Wetland south of Duznau	Duznau	Gm. Achberg		WA	0.5029	05/24/1995	Wet meadow, pipe grass litter meadow and land reed beds
183244360440	Humid bushes northeast of Siggenreute	Siggenreute	Gm. Achberg		WA	0.0420	06/23/1995	Ash willow and ear willow damp bushes
183244360423	Field trees south of Duznau	Duznau	Gm. Achberg		WA	0.0700	05/23/1995	Field wood with black alder and purple willow
183244360358	Wetland at Königsbühl	Siberatsweiler	Gm. Achberg		WA	0.1495	05/15/1995	Land reed and Steifseggen reed
183244360425	Field trees east of Siberatsweiler	Siberatsweiler	Gm. Achberg		WA	0.2171	05/24/1995	Field wood with silver birch and single hawthorn
183244360422	Reeds southwest of Siberatsweiler	Siberatsweiler	Gm. Achberg		WA	0.2516	05/22/1995	two sub-areas with land reeds and bushes in damp locations
183244360458	Reed stocks southwest of Siberatsweiler	Siberatsweiler	Gm. Achberg		WA	0.0500	08/10/1995	two sub-areas with reed beds and bank reed beds
183244356595	Wetland complex 'Graben' northeast of Rudenweiler	Rudenweiler	Gm. Langnau		WA	1.8439	05/24/1995	Pipe grass litter and wet meadow, land reeds, reeds and bank reeds
183244356586	Alluvial forest on the Butzenbach west of Dentenweiler	Dentenweiler	Gm. Langnau		WA	0.1308	05/23/1995	A riparian forest strip that accompanies the water and is six meters wide on average

Lindau

The following biotopes are identified along the Nonnenbach in Lindau's urban area in the area of ​​the villages of Rengersweiler , Hörbolz and Bechtersweiler up to the state border to Baden-Württemberg:

SG no.	Surname	place	location	Ko.	Natural space	Size [ha]	Capture	Remarks	image
8324-0004-001	Nonnenbach sections near Rengersweiler	Rengersweiler	Gm. Unterreitnau		WA	0.5373	07/16/1997	two partial areas; Bank trees and forests on natural and near-natural flowing water
8324-0003-002	Larger and smaller residual moisture areas east and north of Rengersweiler	Rengersweiler	Gm. Unterreitnau		WA	0.7905	07/16/1997	four partial areas; Sedge and rushed meadows, wet meadows, tall herbaceous meadows and Großseggenried
8324-0124-001	Straightened section of the “Nonnenbach” south-east of Rengersweiler	Rengersweiler	Gm. Unterreitnau		WA	0.1497	07/16/1997	Large reed, accompanying wood, tall herbaceous meadow and wet meadow
8323-0011-002 or 001	Edges of wood on the Nonnenbach east of Hörbolz	Drought Hörbolz	Gm. Unterreitnau		WA	0.0281	07/16/1997	two partial areas; Shore wood with gray and black alder on natural flowing water
8323-0010-001	Straightened Nonnenbach sections southeast and south of Hörbolz	Hörbolz	Gm. Unterreitnau		WA	0.2653	07/16/1997	two partial areas; Large reed beds and silted up vegetation on a ditch up to two meters wide with rapid water flow averaging 80 centimeters deep
8423-0006-001	Moist complex on the Nonnenbach east of Bechtersweiler	Bechtersweiler	Gm. Unterreitnau		WA	0.2542	07/18/1997	Seggenried and Nasswiese on the Nonnenbach, which was laid here because of a Mühlgraben junction on the west side of a narrow passage between two drumlins
8423-0007-001	Nonnenbach sections near Martinsmühle southeast of Bechtersweiler	Bechtersweiler	Gm. Unterreitnau		WA	0.6626	07/18/1997	one of two sub-areas with riparian wood, tall herbaceous vegetation and sedge meadows on near-natural flowing water
8423-0007-002	Nonnenbach sections near Martinsmühle southeast of Bechtersweiler	Bechtersweiler	Gm. Unterreitnau		WA	0.2190	07/18/1997	one of two sub-areas with riparian wood, tall herbaceous vegetation and sedge meadows on near-natural flowing water
8423-0011-001	Nonnenbach sections from Bechtersweiler to southwest Rickatshofen	Bechtersweiler Rickatshofen	Gm. Unterreitnau		WA	0.2768	07/18/1997	one of two sub-areas with riparian wood, underwater and floating leaf vegetation on near-natural flowing water
8323-0006-001	Section of the Nonnenbach west of Bechtersweiler	Bechtersweiler	Gm. Unterreitnau		WA	0.4517	07/22/1997	Wood on the banks of the near-natural stream
8423-0011-001	Nonnenbach sections from Bechtersweiler to southwest Rickatshofen	Bechtersweiler Rickatshofen	Gm. Unterreitnau		WA	1.4995	07/18/1997	one of two sub-areas with riparian wood, underwater and floating leaf vegetation on near-natural flowing water

Kressbronn

The following biotopes have been identified along the Nonnenbach in the Kressbronn municipality up to the confluence with Lake Constance:

SG no.	Surname	place	location	Ko.	Natural space	Size [ha]	Capture	Remarks	image
184234353030	Wetland 'Ellenhalde' east of Kümmertsweiler	Kümmertsweiler	Gm. Kressbronn Gw. Ellenhalde		WA	0.3529	06/20/1996	Wetland in the floodplain of the Nonnenbach with wet meadows and reed beds
184234353023	Nonnenbach with riparian forest strips southeast of Kümmertsweiler	Kümmertsweiler	Gm. Kressbronn Gw. Wiesenreute		WA	0.5532	06/20/1996	two partial areas; Near-natural brook over a length of around 1.5 kilometers
184234353029	Wet meadow 'Ellenhalde' east of Kümmertsweiler	Kümmertsweiler	Gm. Kressbronn Gw. Ellenhalde		WA	0.4429	08/13/1996	two partial areas; waterlogging wet meadow and bushes in damp locations
184234353028	Wetland complex 'Ellenhalde' southwest. Kümmertsweiler	Kümmertsweiler	Gm. Kressbronn Gw. Ellenhalde		WA	0.9344	06/20/1996	Large wetland in the floodplain of the Nonnenbach with land reeds, reed cane, field trees and wet meadow
184234353027	Reeds 'Wiesenreute' southeast of Kümmertsweiler	Kümmertsweiler	Gm. Kressbronn Gw. Wiesenreute		WA	0.1909	06/20/1996	three parts of land with reed stands in the floodplain area of ​​the Nonnenbach
184234353024	Wet meadow complex 'Wiesenreute' southeast of Kümmertsweiler	Kümmertsweiler	Gm. Kressbronn Gw.Wiesenreute Fs. 4818-4821		WA	1.4078	06/20/1996	three partial areas; Low moor with swamp and bladder sedge, wet meadow, field hedge, land reeds and reeds
284234350233	Eastern Nonnenbach	Crooked bridge	Gm. Kressbronn Gw. Eggisholz		WA	2.1000	08/02/1989	Forest biotope; three partial areas with a near-natural section of a lowland brook and black alder - ash forest
184234353020	Nonnenbach with riparian forest strips southeast of Krummensteg	Crooked bridge	Gm. Kressbronn Gw.Krummensteg Fs. 6051		WA	0.2768	06/21/1996	Close-to-nature stream section, about 750 m long, with riparian forest strips and tall herbaceous meadows accompanying the water
184234353022	'Eggisholz' wetland south-east of Krummensteg	Crooked bridge	Gm. Kressbronn Gw.Krummensteg Fs. 4770		WA	0.5429	06/21/1996	Wetland with wet meadow, land reeds and reed beds
184234353021	Wet meadow on Nonnenbach southeast of Krummensteg	Crooked bridge	Gm. Kressbronn Gw.Krummensteg Fs. 4770		WA	0.2393	08/13/1996	Species-poor wet meadow in the floodplain of the Nonnenbach, which is sometimes used as pasture in some areas
184234353019	Wetland 'Unter dem Häldele' south of Poppis	Crooked bridge	Gm. Kressbronn Gm. Under the Häldele Fs. 4768 and 4770		WA	0.5168	06/20/1996	two partial areas with reed beds, seepage spring, swamp sedge reed and wet meadow
184234353018	Nonnenbachschleife 'Unter dem Häldele' south of Poppis	Arensweiler , Krummensteg	Gm. Kressbronn Gw. Unter dem Häldele		WA	0.1962	08/13/1996	Natural creek, cut around a meter deep
184234353015	Field trees on the Nonnenbach near Obermühle	Obermühle	Gm. Kressbronn Gw.Butzenegert Fs. 5892/1		BB	0.1230	08/15/1996	Linear forest along the left, north-facing embankment of the straightened Nonnenbach
184234353014	Alluvial forest on the Nonnenbach west of Obermühle	Obermühle	Gm. Kressbronn Gw. Obermühle Fs. 1140		BB	0.0284	08/15/1996	Old woody stock in the riparian forest strip
184234353013	Near-natural Nonnenbach with wooded border west of Obermühle	Obermühle	Gm. Kressbronn Gm. Obermühle		BB	0.0200	08/15/1996	Near-natural stream section with riparian forest strip that accompanies the water
284234350232	Western Nonnenbach	Obermühle	Gm. Kressbronn Gw. Obermühle		BB	1.7000	08/02/1989	Forest biotope; two partial areas with ravine , blade and near-natural section of a lowland brook
284234350231	Bacheschenwald Nonnenbach	Middle mill	Gm. Kressbronn Gw. Mittelmühle and Gw. Mühlhalde		BB	1.7000	08/02/1989	Forest biotope with a near-natural section of a lowland stream, reed beds and black alder - ash forest
184234353010	Wetland 'Mittelmühle' east of Kressbronn	Middle mill	Gm. Kressbronn Gw. Mittelmühle Fs. 1126		BB	0.4307	08/15/1996	two partial areas; Wetland with wet meadow, land reed beds, swamp forest and swamp sedge reed
184234353011	Alluvial forest strip on Mittelmühlenbach east of Kressbronn	Middle mill	Gm. Kressbronn Gw. Mittelmühle Fs. 1125 and 1126		BB	0.0732	08/15/1996	Riparian forest strip with sycamore maple and black alder
184234352997	Nonnenbach with riparian forest in Kressbronn Ost	Kressbronn	Gm. Kressbronn Gw. Bochenloch		BB	0.7713	08/16/1996	Near-natural section of the Nonnenbach with old trees in the riparian forest strip
184234352998	Field wood 'Bochenloch' on the Nonnenbach near Kressbronn Ost	Kressbronn	Gm. Kressbronn Gw.Bochenloch Fs. 1114 and 1115		BB	0.1473	08/15/1996	Field trees on a steep south-facing slope with old, tall and dense trees
184234352999	The 'Bochenloch' pond near Kressbronn	Kressbronn	Gm. Kressbronn Gw. Bochenloch		BB	0.0837	08/16/1996	Silting area of ​​a pond or the dammed canal to the former 'Untermühle' with diving / floating leaf vegetation and cane grass - reeds
184234352996	Alluvial forest on the straightened Nonnenbach in Kressbronn	Kressbronn	Gm. Kressbronn Gw. Untermühle Fs. 458/1 and 907		BB	0.0846	08/16/1996	two sub-areas; Riparian forest strips shaped by ash along the river on both sides of the Nonnenbach, which has been straightened and fortified on the bank
184234352976	Alluvial forest on the Nonnenbach south of Kressbronn	Kressbronn	Gm. Kressbronn Gw. Brühl and Gw. Reid Fs. 1847		BB	0.3390	08/28/1996	ten sub-areas; tall, narrow strip of alluvial forest on both sides of the straightened Nonnenbach stream, which is fortified on the banks
184234352975	Silver willow border on the Nonnenbach near the Bodan shipyard	Kressbronn	Gm. Kressbronn Fs. 1847		BB	0.0213	08/29/1996	Accompanying waters riparian forest strips along the left embankment of the strap on the banks nuns Bach with silver and break pastures
184234352969	Wetland complex 'Boschach' west of the Kressbronn bathing area	Kressbronn	Gm. Kressbronn Gw. Boschach		BB	6.1779	06/18/1996	Large wetland with marsh grass litter, field trees, reed beds, field hedge and wet bushes
184234352970	Trees on the Nonnenbach near the Kressbronn lido	Kressbronn	Gm. Kressbronn Fs. 1765/1 and 1847		BB	0.0613	08/29/1996	Field hedge along the Nonnenbach with Norway and sycamore maple , silver , broken and purple willow
184234352966	Natural shores of Lake Constance west of the Kressbronn lido	Kressbronn	Gm. Kressbronn Gw. Boschach		BB	1.7958	08/29/1996	Flat shore zone of Lake Constance near the Nonnenbach estuary

Renaturation

In the winter and spring of 1996, work began in Kressbronn to renature the Nonnenbach, which had been partially built as a canal over thirty years earlier . Between Bodanstrasse and the confluence with Lake Constance, the solid brook bottom and the solid side walls were first removed. The subsequent dredging gave the stream more space and a slightly curved course. Small trees, bushes and reeds were planted. In the second section, the area above Bodanstrasse along Irisstrasse was renatured in 1998 . As a result of the work, the stream now has pools again , small gravel banks at low tide and an increased fish population.

bad luck

On July 21, 2004 a disaster occurred on the upper reaches of the Nonnenbach: When liquid manure was being pumped over, a pipe connection burst and many liters spilled into the creek and ultimately into Lake Constance. Due to the late arrival after 6 p.m. there was no need to issue a bathing ban. Numerous dead fish remained in the Nonnenbach: streams , minnows and brown trout - the former were on the red list of fish species in Baden-Württemberg - were wiped out, grayling , bullheads and other fish species were severely decimated.

The Nonnenbach in literature

The German writer Martin Walser (* 1927 in Wasserburg on Lake Constance) mentions the Nonnenbach both in his 1979 novel Seelenarbeit :

“He saw bends in the Nonnenbach, deep under the corner wood, litter meadows, alder trees. What dark resting places are created by the fact that the brook eats away the bank in places, but then has to leave it behind at the next group of alders. Pure dark mirrors emerge behind the root associations of such alder pulpits. (...) As a child, Xaver was often down by the Nonnenbach for days and preferred to bend over the quiet, dark spots in the bends in the brook. I reached in my arm and let it break from the water level. "

as well as in the 1998 novel Ein springender Brunnen

“... and from Hengnau to Kümmertsweiler it's a maximum of three kilometers. Beeline. In reality it goes uphill behind Hengnau, then through the Atzenbohl forest deep down to the Nonnenbach, over the Krummen Steg and immediately up again very steeply to the hamlet called Kümmertsweiler. "

and in his 1966 novel Das Einhorn :

"... Tough, said Anselm, as you can see, punctuated by too many alders, the Nonnenbach winds its silent tale down through the valley."

Others

• In today's Kressbronn, both the Nonnenbach School and the footpath " Am Nonnenbach " from the train station to Seestrasse are named after the Nonnenbach.
• The municipality of Kressbronn emerged in 1934 from the previously independent offices of Hemigkofen and Nonnenbach .

literature

• Helmuth Voith: In Walser's footsteps - literary walks in the Kressbronn hinterland . Article in the Kressbronner Jahrbuch, p. 49., Kressbronn am Bodensee 2002.

Web links

Commons : Nonnenbach  - Collection of images, videos and audio files

• Weblink of the State Institute for the Environment, Measurements and Nature Conservation Baden-Württemberg (LUBW)
• Weblink Environmental Object Catalog Bavaria (UOK)

Individual evidence

1. ↑ ^{a b} State Institute for the Environment Baden-Württemberg (LUBW) ( information )
2. ↑ Okularriss the parish Gattnau, 1820
3. ↑ Fishing club Kressbronn e. V. in the Kressbronn yearbook 2004.