Ulmbach (Lahn)

from Wikipedia, the free encyclopedia
Ulmbach in the center of Beilstein (municipality of Greifenstein)

Ulmbach in the center of Beilstein (municipality of Greifenstein)

Water code DE : 25856
location Westerwald (natural area)

Giessen-Koblenz Lahntal


River system Rhine
Drain over Lahn  → Rhine  → North Sea
source south of Mademühlen
50 ° 36 ′ 27 ″  N , 8 ° 8 ′ 54 ″  E
Source height approx.  532  m above sea level NN
muzzle near Biskirchen in the Lahn coordinates: 50 ° 31 ′ 36 "  N , 8 ° 18 ′ 43"  E 50 ° 31 ′ 36 "  N , 8 ° 18 ′ 43"  E
Mouth height approx.  146  m above sea level NN
Height difference approx. 386 m
Bottom slope approx. 17 ‰
length 22.9 km
Catchment area 60.9 km²
Drain MNQ
50 l / s
741 l / s
Reservoirs flowed through Ulmbach dam
Small towns Leun
Communities Driedorf , Greifenstein

The Ulmbach is an approximately 23 kilometers long right-hand or north-western tributary of the Lahn, which runs completely in the area of ​​the Hessian Lahn-Dill district .



The Ulmbach rises in the Westerwald at an altitude of about 532  m above sea level. NN in the mixed forest Lehnstruth south of Mademühlen . The Krombachtalsperre is only about a kilometer further northwest of its headwaters .

The stream initially flows in a north-easterly direction for almost 300 m through the forest and then changes to a grassland zone. Shortly before it reaches the Münchhausen district of Driedorf , the Königswieser Bach coming from the southwest flows into it on its right . The Ulmbach passes the village and then turns to the east. Almost a kilometer down the stream, it is fed on its right by the cart raft , shortly afterwards it flows past the Pfalzmühle , where it says goodbye to Driedorf and enters the Greifenstein area . To the southeast of the Rodenberg district of Greifenstein , it turns to the southeast and then moves through a small strip of deciduous forest towards Beilstein . It now runs through this village until it has almost reached the southern edge, but changes its direction to the east north of Schlossstrasse , then flows past Beilstein Castle and leaves the village on its eastern edge. His path now leads north past the Galgenstein , where he is accompanied by grassland on his left and mixed forest on the right. At the hamlet of Lichtenstein, it makes a curve to the right, then flows further south and is dammed up a little later by the Ulmbach dam to a small lake. About 150 m south of the dam it takes on the right side of the Ballersbach , which rises in the Liebriger Heide , then directs its course to the east and then flows through the Greifenstein district of Holzhausen . We continue through fields and meadows, now south-east, south past the Mückenberg . On the northern edge of Ulm , it is strengthened on the left by the Wehrbach . Flowing along Ulmbacher Straße , it crosses the northeast part of the village and then joins the Lohrbach coming from the northeast . It now moves through a green area on the western edge of a mixed forest, then touches the eastern part of Allendorf , where it first flows into the Haferbach on the right and then further south at the Ruppertsberg the Dobergsbach . To the south of the Galgenberg it takes on the Weltersbach , then runs over a wide area from the west to the Leuner district of Bissenberg , then passes Biskirchen , crosses the tracks of the Lahntalbahn and then the E44 and finally flows out at a height of about 146  m above sea level. NN in the Lahn .


The tributaries are listed downstream with orographic directions and their length:

  • Königswieser Bach ( right ), 2.6 km
  • The cart raft ( right ), 1.3 km
  • Ballersbach ( right ), 2.2 km
  • Wehrbach ( left ), 0.9 km
  • Lohrbach ( left ), 2.6 km
  • Haferbach ( right ), 1.8 km
  • Dobergs-Bach ( right ), 1.7 km
  • Welters-Bach ( right ), 1.2 km
The Ulmbach dam

Ulmbach dam

Due to the annual flood, the Ulmbach dam was built between the Greifenstein districts of Beilstein and Holzhausen in the 1960s . The resulting reservoir serves not only as flood protection but also as a local recreation area .

Dates and character

The Ulmbach is a coarse material rich, silicate low mountain range. Its catchment area is 60.9 km² and its mean discharge (MQ) is 741 liters per second. Its ecological status is classified as moderate, with its water structure data in particular being assessed negatively.


The brown trout

The dominant fish region of the Ulmbach is the upper trout region and, according to the local fishing club , it has a good population of crabs and brown trout . The brook lamprey , minnow , Mühlkoppe , loach and signal crab are also listed .

Individual evidence

  1. a b Topographic map 1: 25,000
  2. a b c Water map service of the Hessian Ministry for the Environment, Climate Protection, Agriculture and Consumer Protection ( information )
  3. Page no longer available , search in web archives: Type 5: Coarse material rich, silicate low mountain range streams (PDF; 141 kB)@1@ 2Template: Toter Link / www.umweltbundesamt.de
  4. ^ ASV Ulmtal eV Greifenstein: The Ulmbach
  5. ASV Ulmtal eV Greifenstein: That swims in Ulmbach!

Web links