Weilach (river)

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Weilach
The meandering Weilach between the villages of Weilach and Schiltberg

The meandering Weilach between the villages of Weilach and Schiltberg

Data
Water code EN : 1346
location Bavaria
River system Danube
Drain over Couple  → Danube  → Black Sea
source Altomünster - Wollomoos
48 ° 24 ′ 6 ″  N , 11 ° 12 ′ 0 ″  E
Source height 493  m above sea level NN
muzzle in the pair at Schrobenhausen -Mühlried coordinates: 48 ° 34 '5 "  N , 11 ° 16' 7"  O 48 ° 34 '5 "  N , 11 ° 16' 7"  O
Mouth height 407  m above sea level NN
Height difference 86 m
Bottom slope 3.9 ‰
length 21.9 km
Catchment area 112 km²
Small towns Schrobenhausen
Communities Altomünster , Schiltberg , Gachenbach , Aresing

The Weilach is a right tributary of the couple in Upper Bavaria .

River course

On its way from the source in Wollomoos (493 m above sea ​​level ) the Weilach flows through the villages of Thalhausen , Aufhausen , Holzhausen , Gundertshausen , Höfarten , Schiltberg , Ried , Weilach and Aresing before reaching Mühlried (407 m above sea level) after 21.9 km ) flows into the pair. Their entire catchment area is 112 km². On this way it runs through the districts of Dachau , Aichach-Friedberg and Neuburg-Schrobenhausen . As far as the village of the same name, Weilach, the stream meanders largely close to nature, after which the creek bed of the river is straightened.

Tributaries

Landscape and land use

The Weilach flows through the Danube-Isar hill country in a sole valley . Adjacent meadows and fields are farmed intensively, especially in the lower reaches. One consequence of this is that ecologically relevant guide values ​​for nutrient inputs such as nitrate and phosphate are exceeded . Sufficiently wide bank margins are usually missing.

fauna

After its extinction in the 19th century, the beaver ( Castor fiber ) has been populating the entire Weilach again for several years. In the unpolluted smaller tributaries there are still specimens of endangered species such as river mussels ( Unio Crassus ) and stone crabs ( Austropotamobius torrentium ).

flora

The tree population is mainly characterized by black alder ( Alnus glutinosa ) and willow species, which are just as typical for these locations as the reed (Phragmites australis) or the marsh marigold ( Caltha palustris ).