Trebgast (White Main)

from Wikipedia, the free encyclopedia
Trebgast
The Trebgast near Harsdorf

The Trebgast near Harsdorf

Data
Water code DE : 24116
location Germany
River system Rhine
Drain over White Main  → Main  → Rhine  → North Sea
origin Confluence of Furtenbach and Flußgraben at Bindlach -Stöckig
49 ° 58 '48 "  N , 11 ° 36' 16"  O
Source height 355  m above sea level NN 
muzzle at the community of Trebgast in the White Main Coordinates: 50 ° 4 '16 "  N , 11 ° 33' 6"  E 50 ° 4 '16 "  N , 11 ° 33' 6"  E
Mouth height 322  m above sea level NN 
Height difference 33 m
Bottom slope 1.9 ‰
length 17.7 km (with Furtbach )
Catchment area 63.76 km²

The Trebgast (with Furtbach) is an almost 18 kilometers long southern and left tributary of the White Main .

geography

course

Furtbach (left) and Flussgraben (right) unite to form Trebgast
The Trebgast near Ramsenthal
The Trebgast in Trebgast
The mouth of the Trebgast (right) in the White Main

The Trebgast arises with the confluence of the Furtbach (4.0 km) and the river ditch (1.1 km) at Bindlach -Stöckig. Some see the Furtbach only as the upper reaches of the Trebgast. It flows in a north-westerly direction, its main direction of flow, which it essentially maintains up to the mouth. At Bindlach-Heinersgrund it is fed by the Bremer Mühlbach coming from the left. South of Harsdorf , the Schaitzer Bach flows from the left and the Haselbach a little further north from the right. At the height of Harsdorf, where it flows past on the left, there is also the Harsdorfer Weiher. There the Schlitterbach flows into the Trebgast. South of the small Trebgastsee it is reinforced to the left by the Kesslerbach and to the right by the Weißbach. On the southern edge of the municipality of Trebgast , the trout stream flows into it. Then it flows into the White Main.

Tributaries

  • Röthelbach (or Rödelbach ( left ), 2.0 km
  • Bremer Mühlbach ( left ), 1.9 km, 3.97 km², Bindlach- Heinersgrund, 343  m above sea level. NN
  • Haselbach ( right ), 2.4 km, 3.87 km², Harsdorf-Zoltmühle, 335  m above sea level. NN
  • Schaitzer Bach ( left ), 3.2 km, 4.15 km², Harsdorf -Schaitz, 339  m above sea level. NN
  • Zoltenbachgraben ( left ), Neudrossenfeld -Waldau, 330  m above sea level. NN
  • Schlitterbach ( left ), 2.0 km, Neudrossenfeld-Unterlaitsch, 329  m above sea level. NN
  • Kesslerbach ( Köstlerbach ) ( left ), 3.1 km, 5.32 km², Trebgast- Lindau, 325  m above sea level. NN
  • Weißbach ( right ), 2.9 km, Trebgast, 324  m above sea level. NN
  • Forellenbach ( right ), 2.8 km Trebgast, 324  m above sea level. NN

White Main river system

River history

The Trebgast did not create her wide valley herself. The Ursteinach, which had much more water, once flowed there. Its upper course, the Warme Steinach , flows today in Bayreuth - Laineck into the Red Main .

Originally the entire area drained in the direction of today's Danube , about 1.5 million years ago the direction of flow changed towards the Rhine . The water of the Steinach, the Red Main and the mistletoe (or the mistletoe creek) flowed through today's Trebgasttal to the White Main. Indefinitely ago, the rubble transported by the Steinach forced a new course on the Red Main, as a result of which the Trebgasttal lost half of its capacity. Raises and subsidence during the last Ice Age blocked the Steinach's path to the north around 20,000 years ago. The Trebgasttal was drained and the Lindau Moor was created.

In the course of the construction of the motorway in 1937, attempts were made to regulate the course of the stream between Bindlach and Crottendorf. At the end of the 1950s, the section from Lindau to the confluence with the White Main followed. Since the Trebgast regularly overflowed its banks during heavy rainfalls and during the melting of the snow, which made the soil marshy and could no longer be used for agriculture, it was decided in 1970 to regulate the remaining eight kilometers.

nature and environment

In the 1950s, the Trebgast was straightened and expanded with a standard profile. This natural state contradicts the current goals of the European Water Framework Line. In places the brook winds its way through the valley again thanks to extensive hydromorphological measures by the Hof water management authority . It was last renatured in 2014 on a length of 1.2 kilometers between Trebgast and Harsdorf.

Today beavers have settled on the Trebgast again . In the area between the bathing lake and the center of Trebgast, they regularly build dams and use them to dam the stream. If the water level at the measuring point of the water management office at Trebgast station is too high, this condition is corrected by the Bayreuth river engineer.

Remarks

  1. ↑ Sometimes also seen as the left tributary of the Trebgast

Web links

Individual evidence

  1. ↑ a b Topographic map 1: 10000 Bavaria North
  2. ↑ a b List of brook and river areas in Bavaria - Main river area, page 7 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB)
  3. ↑ Name according to the background map: Position sheets 1: 25000 (1817-1841)
  4. ↑ Background map: first recording (1808-1864) )
  5. ^ Fränkische Zeitung of April 10, 2013, p. 7.
  6. ↑ a b c The Million Years Question in: Nordbayerischer Kurier of November 29, 2018, p. 26.
  7. ↑ 50 years ago in: Nordbayerischer Kurier of March 4, 2020, p. 8.