Green brook

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Green brook
Grüner Bach source northwest of Evingsen.

Grüner Bach source northwest of Evingsen.

Data
Water code DE : 276696
location North Rhine-Westphalia , Germany
River system Rhine
Drain over Lenne  → Ruhr  → Rhine  → North Sea
source Northwest of Altena - Evingsen
51 ° 19 ′ 5 ″  N , 7 ° 42 ′ 58 ″  E
Source height approx.  457  m above sea level NN
muzzle West of Iserlohn - Untergrüne in the Lenne Coordinates: 51 ° 21 ′ 43 "  N , 7 ° 38 ′ 5"  E 51 ° 21 ′ 43 "  N , 7 ° 38 ′ 5"  E
Mouth height approx.  129  m above sea level NN
Height difference approx. 328 m
Bottom slope approx. 28 ‰
length 11.6 km
Catchment area 25,183 km²

The Grüner Bach is an 11.6 km long orographically right tributary of the Lenne in North Rhine-Westphalia , Germany .

geography

The stream has its source at the Grünequelle about 1.3 km northwest of Evingsen . The source is north of the saddle between Rüssenberg (493.9 m) and Rimberg (500.4 m) at an altitude of 457  m above sea level. NN . From here it initially flows in a north-westerly direction through sparsely populated area. At Attern in the south of Iserlohn the course turns north.

Accompanied by the L 888, the brook flows through Bräke and Dannenhöfer and then reaches the Iserlohn district of Obergrüne . Here the brook turns to the west, passes Iserlohn- Untergrüne and flows there at 129  m above sea level. NN in the Lenne . The valley floor between the Dannenhöfer and the mouth is almost completely built up.

On its 11.6 km long path, the stream overcomes a height difference of 328 m, which corresponds to a mean bed gradient of 28.3 ‰. It drains a 25.183 km² catchment area via the Lenne, Ruhr and Rhine to the North Sea .

Tributaries

The most important tributary of the Grüner Bach is the 2.9 km long Lösseler Bach . It is the longest tributary and has the largest catchment area with 2.348 km². In the following, the tributaries of the Grüner Bach with their mouth location, length, size of the catchment area, mouth height and river code number (DGKZ) are named.

Surname
 location
 Length
[km]
 Catchment area
[km²]
 Mouth height
[m. ü. NN]
 DGKZ
Pillingser Bach Left 2.6 1,500 140 276696 92
Lösseler Bach Left 2.9 2,348 152 276696 8
Dröscheder Bach right     154
Selbergbach Left 1.5 0.724 175 276696 6
Asbecke right 1.3 1.433 228 276696 4
Bräker Bach right 1.1 279 276696 32
Schlaabach Left 1.2 0.975 293 276696 2
Siepenbach Left 1.5 347 276696 12

caves

There are many caves in the Green Valley, the most famous of which is the Dechen Cave . Some researchers suspect them as a contiguous cave system.

Individual evidence

  1. ↑ a b c d German basic map 1: 5,000
  2. ↑ a b c d Topographical Information Management, Cologne District Government, Department GEObasis NRW
  3. ↑ Witold Grebe: The caves in the Green Valley - one giant cave? In: Speleological yearbook, Speleological group Letmathe - Association for Speleology in Westphalia, conference proceedings 2007