Beverbach (Aller)
Beverbach | ||
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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 |
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muzzle | Southeast of Dannenbüttel Coordinates: 52 ° 28 '49 " N , 10 ° 38' 11" E 52 ° 28 '49 " N , 10 ° 38' 11" E
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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 |
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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
- All ears bandage
- NLKWN: Water Management Mapping
- Sassenburg / Beverbach renaturation near Dannenbüttel. Tons of gravel helps fish when hiking on March 11, 2018 on waz-online.de