Roth (Rednitz)

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Roth
The Roth in Roth. View downstream to the northwest from under the bridge of Friedrich-Wambsganz-Straße, about 0.5 km before the mouth.

The Roth in Roth .
View downstream to the northwest from under the bridge of Friedrich-Wambsganz-Straße, about 0.5 km before the mouth.

Data
Water code DE : 24214
location Bavaria
River system Rhine
Drain over Rednitz  → Regnitz  → Main  → Rhine  → North Sea
source in a forest area on the northeast slope of the Altenberg near Thalmässing - Stauf
49 ° 7 ′ 10 ″  N , 11 ° 13 ′ 15 ″  E
Source height approx.  499  m above sea level NHN
muzzle at the city center of Roth from the right and from the southeast in the Rednitz coordinates: 49 ° 14 '53 "  N , 11 ° 5' 15"  E 49 ° 14 '53 "  N , 11 ° 5' 15"  E
Mouth height approx.  325  m above sea level NHN
Height difference approx. 174 m
Bottom slope approx. 7.4 ‰
length 23.6 km
Catchment area 172.52 km² 
180.8 km² 
Discharge at the Roth Bleiche
A Eo gauge: 172.17 km² 		NNQ
MNQ
MQ
Mq
 MHQ
HHQ (1970) 		420 l / s
890 l / s
3.15 m³ / s
18.3 l / (s km²)
 16.1 m³ / s
56.1 m³ / s

The Roth is a year-round flowing water body of 1,2 and 3rd order in the Central Franconian district of Roth in Bavaria , which flows into the Rednitz from the right after a nearly 24 km long run in approximately northwest direction in the urban area of Roth .

geography

course

The Roth rises in a forest area east of the Altenberg ( 553  m above sea level ) near the village of Stauf von Markt Thalmässing at about 499  m above sea level. NHN . On its first one and a half kilometers it runs through the Gewann Tännig in a north-easterly direction down the northeast slope of the Altenberg. At the foot of the mountain at about 440  m above sea level. NHN it leaves the forest at a small pond and soon turns to the west to and through the Thalmässing district of Eysölden . Behind the village, near the Ziegelhütte and shortly before a sewage treatment plant, it is fed from the left by the Altbach , which drains the northwestern slope and the foreland of the Altenberg. At this tributary, it quickly changes to its north-westerly course, now almost to the mouth, on which it changes to the urban area of Hilpoltstein soon after Neumühle .

Here it first passes through a landscape made up of hillside forests and open corridors, passing the parish village of Zell on the left bank, through which the Höllachgraben a somewhat longer stream flows for the first time. Further down at the Lochmühle, the 9 km long Kleine Roth flows from the left and southwest, which more than doubles its current catchment area. An outgoing mill ditch drives the mill. The Weihersmühle soon follows on the right bank, below it the Roth crosses the village of Unterrödel, at the northern end of which a side ditch feeds water to the Rothenmühle. Above the narrow, open valley floor, forests now cover the accompanying hills, almost uninterrupted on the left.

Shortly before the Fuchsmühle, the Hardgraben runs towards you from the left , which previously ran through several ponds, some in a closed chain. At the mill, the river bends northeast for about a kilometer and in this direction passes the group of Kühweiher . Then it is at 366  m above sea level. NHN on the southern edge of the Hilpoltstein district of Hofstetten reinforced by the more than 8 km long Minbach from the south-east, it turns again to the left on the western run and flows past the church village on the right slope, behind the opposite a larger pond on the left edge of the meadow promptly on the right Slope again sets in forest.

Between the Paulusmühle and the Knabenmühle the almost 10 km long Gänsbach flows to the right , which previously ran through Hilpoltstein itself on the middle course and whose sources are still beyond the Rhine-Main-Danube Canal , which is now approaching the Roth more and more on the right. Below the following Stephansmühle, the urban area of Roth borders on the left bank. A little after the bridge of the Greding – Roth railway over both bodies of water flows across from the Lösmühle at 352  m above sea level. NHN from the left the Wallersbach with its longer upper course about 6 km long from the wide left forest area, it feeds the Wallersbachteiche and then runs for a good part in meanders through the floodplain of the Roth. After that, it completely enters the area of ​​the city of Roth.

On the south-eastern edge of the settlement of Eckersmühlen , it passes the Brückleinsmühle and shortly before the Leonhardsmühle , this time from the right and northeast, another Kleine Roth , with a length of almost 12 km and a catchment area of ​​around 39 km², is its most important tributary. It arises northeast of Markt Allersberg in the Pyrbaumer Forest and runs between the Marktdorf and the Rhine-Main-Danube Canal at 354  m above sea level. NHN the large Rothsee , which among other things serves to feed the top of the canal closest to the Roth in this area.

Down from Eckersmühlen, the Roth passes the historic Kupferhammer and then the Eisenhammer an der Roth , in the area of ​​which the short Rötelgraben runs from the left. Down from the village of Hofstetten in the town of Roth, which is divided by the Roth, the river is still fed by the Röthelbach flowing in from the east . Thereafter, Roth, which had previously meandered northwest, turned more and more to the west. It flows directly on the outskirts under the B 2 , then through a park strip in the city, touches the old town center in the north and finally flows out at about 325  m above sea level. NHN below the Rednitz bridge on Bahnhofstrasse from the right and finally east into an east loop of the Rednitz .

The Roth has a length of 23.6 km from the source on Altenberg to the mouth and falls by about 174 meters on this route, its mean bed gradient is about 7.4 ‰. The water of the Roth is considered to be critically polluted for most of its course and only moderately polluted in the lower reaches from Hofstetten .

Catchment area

Depending on the source, the Roth drains a catchment area of ​​172.5 km² or 180.8 km² northwest of the Rednitz. If one disregards the partially artificially changed discharge conditions due to the construction of the Main-Danube Canal, then the catchment area of ​​the nearby downstream Rednitz tributary Brunnbach borders in the north and that of the Finsterbach, which flows below it, in the northeast near Allersbach . Beyond the entire eastern watershed, the Schwarzach receives its often short tributaries. Behind the marginal elevations in the south, its rather long tributary Thalach flows eastwards to Schwarzach. On these two sections, because the Schwarzach drains into the Danube via the Altmühl , while the Rednitzwasser reaches the Rhine via the Main , the catchment area border is also part of the European main watershed between the Rhine and the Danube. Finally, the western watershed runs in front of the Felchbach , Röttenbach and Maukbach tributaries of the Rednitz upper reaches of the Franconian Rezat , and further north then also in front of smaller ones of the Rednitz outflow stream itself.

The greatest heights are on the southern edge at the southeastern tip near Stauf auf dem Altenberg ( 553  m above sea level ), a little above the Roth origin, but above all at the southwest tip near Heideck- Rambach on the Schloßberg ( 606.7  m above sea level ) where the source brooks of the (upper, left) Kleine Roth spring. Both isolated elevations are witness mountains in front of the northern edge of the Franconian Jura , the Schloßberg with a ceiling in the Brown Jura , the Schloßberg even with one in the White Jura .

About half of the catchment area is forested.

Individual evidence

  1. ↑ a b Height queried on the BayernAtlas (right click). See the →  web links .
  2. ↑ a b c Length according to the list of creek and river areas in Bavaria - Main river area, page 38 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB).
  3. ↑ a b c catchment area according to the list of brook and river areas in Bavaria - Main river area, page 38 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB).
  4. ↑ a b catchment area according to the Main flood action plan
  5. ↑ Bavarian flood news service (as of September 7, 2011)
  6. ↑ The flood intelligence service names a catchment area of ​​180.38 km² at the level 0.51 km above the estuary, which would exceed the total catchment area according to the list of creek and river areas ... by more than 4%.
  7. ↑ 'Waters in the district of Roth' water cadastre of the government of Middle Franconia, accessed on April 18, 2015
  8. ↑ a b c Height according to black lettering on the BayernAtlas.
  9. ↑ a b c Height according to the blue lettering on the BayernAtlas.
  10. ↑ a b c Length according to the list of brook and river areas in Bavaria - Main river area, page 39 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB).
  11. ↑ Length measured on the BayernAtlas.
  12. ^ Museum Historischer Eisenhammer Eckersmühlen ( Memento from March 20, 2008 in the Internet Archive )
  13. ↑ Water quality in the district of Roth
  14. ↑ The layers of Schloßberg and Altenberg can be seen on the BayernAtlas map listed in the →  web links , on which a layer geological map of Bavaria 1: 500,000 can be switched on. ( Change topic → Inspire → Appendix 2 → Geology )

Web links

Commons : Roth (Rednitz)  - Collection of images, videos and audio files