Mohrbach (Seebach)

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Mohrbach
Moorbach
Oberlauf: Strichweiherbach
Data
Water code DE : 242422
location Middle Franconian basin

Germany

River system Rhine
Drain over Seebach  → Main-Danube Canal  → Regnitz  → Main  → Rhine  → North Sea
source between Weisendorf - Boxbrunn and adAisch Höchstadt - Mechelwind
49 ° 39 '13 "  N , 10 ° 48' 55"  O
Source height 312  m
muzzle near Erlangen - Großdechsendorf Coordinates: 49 ° 37 ′ 40 ″  N , 10 ° 56 ′ 19 ″  E 49 ° 37 ′ 40 ″  N , 10 ° 56 ′ 19 ″  E
Mouth height 280  m above sea level NHN
Height difference 32 m
Bottom slope 2.4 ‰
length 13.1 km
Catchment area 37.61 km²

The Mohrbach , or Moorbach , is a good 13 kilometers long, northwest and left tributary of the Seebach in Middle Franconia .

geography

course

The Mohrbach rises as Strichweiherbach at the northeastern foot of the 336  m above sea level. NHN high Heuberg at an altitude of 312  m above sea level. NHN between the Weisendorf district of Boxbrunn and the Höchstadter district of Mechelwind a small pond.

In an east-northeast direction, the stream first flows through the chain of ox ponds , then the Vockweiher and then the Kleiner Strichweiher . It then runs along the Großer Strichweiher , bends sharply to the north-northwest at the quarter ponds , and then resumes its old direction at the third pond . It then continues between the Blätterweiher in the north and the Großer Weiher in the south and then makes a small curve to the left and flows south first past the Weinbert - and then past the Steigsee . At the Großer Anger corridor , he walks in an east-southeast direction past the Last Weiher and leaves the pond area.

It now moves south through fields, then flows from the west around the village of Hesselberg, which is part of the municipality of Heßdorf . Then it flows southwards on the wooded 300  m above sea level on its left . NHN high Altenberg past. On the other side there is the little Lauterweiher . It now runs eastwards through fields to the north of the village of Niederlindach , which is part of Heßdorf as a district. There it crosses under the St 2240 , curves north and then crosses the E 45 / A 3 .

It now moves in a south-southeast direction, first west of the Vorderen Tiefweiher , then the Röhracher Weiher and then the village of Röhrach , which also belongs to Heßdorf . It now flows in a narrow green strip lying to the right and left between forests to the west at 307  m above sea level. NHN high Eichelberg over. There it is fed by the Lindach on the right by the Kronersweiher .

He then passed the county border to Erlangen , then draws between the wooded corridor Grunau on his right side and the hallway agricultural Moorau on the left to a smaller Weiherkette over and then reached the eastern edge of belonging to the Erlangen district of North West district Dechsendorf .

It now runs along the western edge of the village, crosses under Hemhofener-Straße and finally flows out at an altitude of 280  m above sea level. NHN near Dechsendorf from the left and from the northwest into the Seebach approaching from the west .

Its 13.1 km long run ends 32 meters below its source, so it has an average bed gradient of 2.4 ‰.

Catchment area

The 37.61 km² catchment area of ​​the Mohrbach is naturally part of the Aischgrund , but it is not drained via the Aisch, but via the Seebach, the Main-Danube Canal , the Regnitz , the Main and the Rhine to the North Sea. The Seebach has a slightly smaller catchment area than this before the Mohrbach.

The Mohrbach catchment area borders

  • in the northeast and east to that of the forest trench , a later tributary of the Seebach;
  • in the south to the Seebach itself;
  • to the west of that of the Aschenbach , which flows to the Aisch , which only feeds the Regnitz below the Seebach;
  • in the north to that of the other Aisch tributaries Schwarzenbach and Staffelbach .

The highest elevation is 350  m above sea level. NHN high Dachsberg in the west of the catchment area.

There are a large number of ponds in the catchment area of ​​the Mohrbach. Otherwise it is used for agriculture, with forests mainly in the peripheral areas. A larger forest island also in the center is the Hegnichtswald . The further estuary area is forested and the estuary itself is in the village of Dechsendorf.

Tributaries

  • Lindach ( right ), 5.1 km (with upper course 10.3 km)

geology

The catchment area is characterized by sandstone - claystone alternation with dolomite rock layers of the Löwenstein formation of the Middle Keuper . To the south-east there are increasingly sandstones with chalcedony layers .

Quaternary gravel and sandstone dominate the floodplain and the estuary .

nature and environment

In the source area in the area of ​​the ox ponds, large sedge beds , sedges and wet meadows rich in rushes grow and are swamps with underwater and floating leaf vegetation .

In the area of ​​the ponds near Mohrhof , part of the town of Höchstadt, there is a fauna and flora habitat with biologically valuable wet meadows.

On the western outskirts of Hesselberg near the Salted Wiesen-Weiher there is species-rich wet grassland and north of the Altenberg rush-rich wet meadows.

North of Niederlindbach there are Großseggenriede, wet meadows rich in rushes, swamps and reed beds , in the Röhrach area there are also dwarf shrub and gorse heaths .

There are also valuable wet meadow areas with great biodiversity along the further course of the stream.

Web links

Individual evidence

  1. ↑ a b List of stream and river areas in Bavaria - Main river area, page 48 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB)