Kleine Aller
Kleine Aller | |
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Location | |
Country | Germany |
State | Lower Saxony |
Physical characteristics | |
Mouth | |
• location | Aller |
• coordinates | 52°27′03″N 10°43′49″E / 52.4508°N 10.7303°E |
Length | 22.9 km (14.2 mi) [1] |
Basin size | 144 km2 (56 sq mi) [1] |
Basin features | |
Progression | Aller→ Weser→ North Sea |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/86/Vorsfelder_Werder_Skizze.png/220px-Vorsfelder_Werder_Skizze.png)
The Kleine Aller is a tributary of the
Course
The Kleine Aller rises in the Brome village of Wiswedel at 78 m above sea level. It drains the Kiebitzmoor west of Tülau, through a system of ditches that has been continually expanded over the years, and also drains the Vogelmoor north of Barwedel. In this region it is joined by the tributary of the Rhodische Aller. Finally the Kleine Aller flows southwards, past Bergfeld, Barwedel, Tiddische, Hoitlingen and Jembke. From Jembke it forms the border between the district of Gifhorn and the city of Wolfsburg. The river also passes Wolfsburg-Brackstedt and Wolfsburg-Warmenau to enter the Aller Canal south of Weyhausen at a height of 55.5 m above sea level and at a point a few hundred metres after it branches away from the River Aller itself.
The sections near Tülau, Bergefeld and Tiddische have been renaturalised and, in places, a new river channel has been dug out. The near-natural areas thus created have been planted with alder. This provides important areas of shade because much of the river is directly illuminated by the sun, something which leads to rapid weed growth and choking of the river bed.
Formation and history
The river channel was formed, like the surrounding landscape, in the penultimate
In the Middle Ages the valley of the Kleine Aller created a natural, north-south oriented border between two regions. These were the Boldecker Land in the west and the historic landscape of the Vorsfelder Werder in the east.
The Kleine Aller has been able to carve out a valley during the course of its existence which, in its middle reaches, is about 10 m deep and about 1,000 m wide in which a
Water quality
Near Warmenau there has been a water quality station since 1967, where water quality has been regularly tested since 1976. The 2004 Lower Saxon