Zenn

This article covers the flow; on the desert near Siersleben see Zenn (desert) ; further meanings under Zen (disambiguation) .

Zenn
Zenn at Atzenhof
Data
Water code	DE : 24232
location	Bavaria Neustadt an der Aisch-Bad Windsheim district Obernzenn market Gde. Trautskirchen Market Neuhof Fürth district Wilhermsdorf market City of Langenzenn Gde. Veitsbronn District-free Fürth Fürth district Gde. Obermichelbach District-free Fürth
River system	Rhine
Drain over	Regnitz  → Main  → Rhine  → North Sea
source	in the extreme north of the Frankenhöhe 49 ° 26 ′ 19 ″  N , 10 ° 25 ′ 30 ″  E
Source height	approx.  404  m above sea level NHN
muzzle	near Fürth - Vach from the left and southwest into the Regnitz coordinates: 49 ° 31 ′ 21 ″  N , 10 ° 58 ′ 14 ″  E 49 ° 31 ′ 21 ″  N , 10 ° 58 ′ 14 ″  E
Mouth height	approx.  280  m above sea level NHN
Height difference	approx. 124 m
Bottom slope	approx. 2.5 ‰
length	49.1 km
Catchment area	257.48 km²
Discharge at the Kreppendorf gauge (96.0% of the catchment area) A Eo : 248 km² Location: 7.8 km above the mouth	NNQ (04.07.1976) MNQ 1971–2006 MQ 1971–2006 Mq 1971–2006 MHQ 1971–2006 HHQ (21.03.2002)	3 l / s 434 l / s 1.38 m³ / s 5.6 l / (s km²) 24 m³ / s 63.3 m³ / s
Reservoirs flowed through	Obernzenner See
Zenn near Retzelfembach

The Zenn is a 49 km long, left and western tributary of the Regnitz in Middle Franconia .

Surname

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The name " Zenn " comes from the Anglo-Saxon word dānian , which means moist . The river gave their names to the Obernzenn market , the Unterzenn district and the town of Langenzenn .

geography

course

The Zenn rises in the extreme north of the Frankenhöhe , flows east to east-northeast through Obernzenn , Trautskirchen , Neuhof an der Zenn , Wilhermsdorf , Langenzenn , Veitsbronn , Rothenberg and Ritzmannshof (Fürth) and flows into the Regnitz at Fürth - Vach from the left and south-west .

Like most of the western tributaries of the Regnitz, the Zenn has a low gradient and a low discharge as well as sand structures in the bank area and in the river bed .

Catchment area

The 257.5 km² catchment area stretches in a slim spindle contour of around 43 km in length and a maximum of around 10 km in width from the Hohe Steig forest plateau between Marktbergel and Obernzenn in the west, a little above the source to the mouth at Fürth-Vach in the east. The northern watershed borders in the far west on the drainage area of ​​the Aisch , on the larger part then on that of the Middle Aurach . Beyond the southern one, the Farrnbach , the Bibert and finally the Franconian Rezat compete from east back to west , whose headwaters at Oberdachstetten are close to that of the Zenn. Here, near the western tip of the Zenn catchment area, this watershed also runs over the 506  m above sea level. NN highest point in the entire catchment area, which is on the Illesheimer Kopf between Urphertshofen on this side and Oberdachstetten on the other. Aisch, Aurach and Farrnbach run like the Zenn further below from the left into the Regnitz, Bibert and Fränkische Rezat also drain into the Regnitz via the main upper reaches of the Rednitz .

Tributaries

diagram

Tributaries over five kilometers in length

List of tributaries

From the source to the mouth. Direct tributaries only. Selection.

• Weiherbach ( left ), 391  m above sea level NHN , (west of Obernzenn in Obernzenner See ), ( coordinate )
• Mölbenbächl ( right ), 377  m above sea level NHN (west of Obernzenn in Obernzenner See), ( coordinate )
• Eisenbach ( right ), 377  m above sea level. NHN (west of Obernzenn in Obernzenner See), ( coordinate )
• Irlbach ( left ), 357  m above sea level NHN (Hölzleinsmühle east of Obernzenn-Unternzenn), ( coordinate )
• Brachbach ( right ), 355  m above sea level. NHN (west of Obernzenn-Oberaltenbernheim), ( coordinate )
• Seebach ( left ), 353  m above sea level NHN (in Obernzenn-Oberaltenbernheim), ( coordinate )
• Kemmathbach ( right ), (4.38 km), 345  m above sea level. NHN (south of Obernzenn-Unteraltenbernheim), ( coordinate )
• Holzbrunngraben ( left ), (in Obernzenn-Unteraltenbernheim)
• Wimmelbach ( right ), 342  m above sea level NHN (east of Obernzenn-Unteraltenbernheim), ( coordinate )
• Hechelbach ( left ), 342  m above sea level NHN (east of Obernzenn-Unteraltenbernheim), ( coordinate )
• Steinbach ( left ), (5.23 km), 337  m above sea level. NHN (east of Trautskirchen- Buch in the short tributary Mühlbach ), ( coordinate )
• Hörbach ( right ), 336  m above sea level NHN (east of Trautskirchen- Buch), ( coordinate )
• Merzbach ( left ), 333  m above sea level NHN (near Trautskirchen), ( coordinate )
• Taubenlohebach ( right ), 329  m above sea level NHN (near Trautskirchen-Stöckach), ( coordinate )
• Mögelheubach ( right ), 326  m above sea level. NHN , ( coordinate )
• Weiherbach ( right ), 323  m above sea level. NHN (north of Neuhof an der Zenn ), ( coordinate )
• Neuselingsbach ( left ), (7.46 km), 323  m above sea level. NHN (southeast of Neuhof an der Zenn- Neuselingsbach ), ( coordinate )
• Eschenbach ( left ), 319  m above sea level NHN (north of Neuhof an der Zenn-Adelsdorf), ( coordinate )
• Katterbach ( right ), 318  m above sea level NHN (north of Neuhof an der Zenn-Adelsdorf), ( coordinate )
• Stelzenbach ( left ), (with longer upper reaches compared to the Stelzenbach, Ulsenbach on the left, 8.26 km, and Erlenbach on the right), 314  m above sea level. NHN (in Wilhermsdorf ), ( coordinate )
• Gansangergraben ( right ), 313  m above sea level NHN (west of Langenzenn- Heinersdorf), ( coordinate )
• Altbuchbach ( left ), 310  m above sea level NHN (south of Langenzenn-Laubendorf), ( coordinate )
• Kettenbach ( left ), 307  m above sea level NHN (north of Langenzenn-Gauchsmühle), ( coordinate )
• Hardgraben ( left ), 307  m above sea level NHN (in Langenzenn), ( coordinate )
• Lohmühlbach ( right ), 305  m above sea level NHN (in Langenzenn), ( coordinate )
• Fembach ( left ), (10.42 km), 296  m above sea level. NHN (near Veitsbronn- Retzelfembach), ( coordinate )
• Tuchenbach ( left ), 294  m above sea level NHN (near Veitsbronn), ( coordinate )
• Eichwasser ( left ), 294  m above sea level NHN (near Veitsbronn), ( coordinate )
• Reihgraben ( left ), 289  m above sea level NHN (near Fürth - Ritzmannshof ), ( coordinate )

nature and environment

Water quality

The Zenn has water quality class II-III throughout .

Chemical-physical parameters (mean values), observation period 2000–2005:

Measuring point	WT (location) ° C	pH	O 2 ( mg / l )	NH 4 - N ( mg / l )	NO 3 - N ( mg / l )	P tot. ( mg / l )	Cl ( mg / l )
above the mouth	11.9	8.1	9.2	0.29	8.9	0.278	44

biosphere

Seventeen different fish species are found in the Zenn u. a. Eels , carp , tench , pike and trout . In 2007, two thousand crayfish were released in the Zenn.

literature

• Johann Kaspar Bundschuh : Zenn . In: Geographical Statistical-Topographical Lexicon of Franconia . tape 6 : V-Z . Verlag der Stettinische Buchhandlung, Ulm 1804, DNB  790364328 , OCLC 833753116 , Sp. 523 ( digitized version ).

Web links

Commons : Zenn  - collection of images, videos and audio files

• Map of the course and catchment area of ​​the Zenn on: Overall table of the Bavarian water directory of the Bavarian State Office for the Environment (XLS, 10.3 MB)
• Map of the catchment area in the basic data for flowing waters of Bavaria, Bavarian State Office for the Environment
• Level near Stöckach and Laubendorf , HND Bavaria

Individual evidence

1. ↑ ^{a b} Topographic map 1: 10,000 North Bavaria
2. ↑ ^{a b} List of brook and river areas in Bavaria - Main river area, page 46 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB)
3. ^ Deutsches Gewässerkundliches Jahrbuch Rheingebiet, Part II 2006 Bavarian State Office for the Environment, p. 97, accessed on October 4, 2017, at: bestellen.bayern.de (PDF, German, 23.6 MB).
4. ^ Wolf-Armin von Reitzenstein : Lexicon of Franconian place names. Origin and meaning . Upper Franconia, Middle Franconia, Lower Franconia. CH Beck, Munich 2009, ISBN 978-3-406-59131-0 , p. 127–128 ( limited preview in Google Book search).
5. ↑ Wießner: Fürth No. 329 .
6. ↑ ^{a b} Summary of the reports on the 2004 inventory in Bavaria. (PDF; 760 kB) Bavarian State Office for the Environment: Reports to the European Commission according to Art. 5, Annex II and Annex III, as well as Art. 6, Annex IV, of the Water Framework Directive , 1st version, Augsburg 2006, p. 27
7. ↑ Page no longer available , search in web archives: River Middle Franconia chemical-physical parameters observation period 2000-2005 (PDF)
8. ↑ Oxygen content in the water ( Memento of the original from March 11, 2008 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. 
9. ↑ Ammonium nitrogen ( Memento of the original from March 12, 2008 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
10. ↑ Nitrate and ammonium nitrogen
11. ↑ ^{a b} Crayfish returns to the Zenn May 8, 2007, nordbayern.de
12. ↑ Waters 2014: Zenn Fischereiverein Fürth e. V. founded in 1881