Beverbach (Aller)

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Beverbach
Data
Water code DE : 45374
location Gifhorn district
River system Weser
Drain over Aller  → Weser  → North Sea
source North of Bokensdorf
52 ° 31 ′ 23 ″  N , 10 ° 42 ′ 46 ″  E
muzzle Southeast of Dannenbüttel Coordinates: 52 ° 28 '49 "  N , 10 ° 38' 11"  E 52 ° 28 '49 "  N , 10 ° 38' 11"  E

length approx. 10.1 km
Catchment area approx. 25.69 km²
Left tributaries Black pond ditch,
Right tributaries Bokensdorfer Bach

The Beverbach is a 10.1 km long right tributary of the Aller , located in the Südheide in the Gifhorn district .

course

The Bever Bach rises south of the village Grußendorf , a district of the unified community Sassenburg , on the border with joint community Boldecker country . The further course goes southwest through the Derenmoor nature reserve to the Elbe-Seiten Canal and along it on the eastern side. At the level of the Dagebrück estate, the Beverbach crosses the canal through a tunnel. The stream then continues in a south-westerly direction past the Beversee, under the B188 and meets the Aller south-east of Dannenbüttel , a district of the municipality of Sassenburg .

Tributaries

right tributaries Black pond ditch
left tributaries Bokensdorfer Bach, Derenberg Graben
Communities Sassenburg , Boldecker Land

Hydrology

The Beverbach has been straightened and in many places looks quite remote from nature. The upper course in the forest is more like a wide ditch than a heather stream flowing through a forest. The stretch of water running parallel to the Elbe Lateral Canal is extremely remote from nature . There are numerous falls in the narrow river bed, which make it difficult for the organisms to migrate upwards in the water. To the west of the Elbe Side Canal, the Beverbach offers a more natural view. The bank here is more irregular and structures have developed on the gravelly sandy bottom that provide a habitat for numerous types of flowing water. In places knee-deep mud banks have deposited here. Often trees shade this stretch of water. In front of the mouth, the stream is clearly developed and remote from nature. In summers with little rain, the stream has no continuous water flow. The water of the upper course is quite acidic due to the catchment area shaped by the moor. Here pH values ​​<6 or even <5 near the source were measured. The community of the brook could be assessed relatively favorably, although here too, especially with regard to the caddis flies, there are major deficits. Mention should be made of two stonefly species of the genus Leuctra, which are very rare in the Aller catchment area. The very demanding larvae of the dragonfly Cordulegaster boltonii could also be detected in the brook, although the water, as already mentioned, has temporarily no continuous water flow. However, these dragonfly larvae can endure their living water falling dry for about two months if they find shelter and moisture on the bottom under dead wood or accumulations of detritus.

Water quality

The saprobic index marks the brook in all places as a moderately polluted water body of quality class II. In dry summers, however, a quality determination is not always possible.

fauna

Order / Art category

of the Red Lists
Plain

Stoneflies
Leuctra digitata 2
Leuctra hippopus 2
Caddis flies
Oligotricha striata 3
Potamophylax rotundipennis V
Dragonflies
Calopteryx splendens 3
Cordulegaster boltonii 2
Gomphus vulgatissimus 1
Beetle
Hydraena riparia 3
Lampreys
Lampetra planeri 2

Water maintenance

The Beverbach is maintained by the Aller-Ohre Association , which also includes the Beverbach Water and Soil Association.

Individual evidence

  • NLWKN: Aboveground Waters Volume 38, detailed structure mapping of selected rivers in Lower Saxony and Bremen, results 2010 and 2014, Appendix 1 edition 12/2015
  • All ears bandage
  • Geographic data from Open Street Map (OSM)

Web links