Windach (river)

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Windach
right main line upper course: Hasenschorngraben
The Windach between Obermühlhausen and the Windachspeicher.

The Windach between Obermühlhausen and the Windachspeicher.

Data
Water code DE : 16432
location Landsberg am Lech district , Upper Bavaria , Bavaria , Germany
River system Danube
Drain over Amper  → Isar  → Danube  → Black Sea
source of Hasenschorngraben about 2.9 km east-northeast of Rott
47 ° 55 ′ 7 ″  N , 11 ° 0 ′ 17 ″  E
Source height approx.  709  m
muzzle east of Eching am Ammersee from the left into the Amper coordinates: 48 ° 4 ′ 51 ″  N , 11 ° 7 ′ 58 ″  E 48 ° 4 ′ 51 ″  N , 11 ° 7 ′ 58 ″  E
Mouth height approx.  532  m
Height difference approx. 177 m
Bottom slope approx. 4.9 ‰
length 35.8 km 
with the upper reaches of Hasenschorngraben
Catchment area 129.12 km²
Discharge at the Greifenberg
A Eo gauge : 124 km²
Location: 4 km above the mouth 		NNQ (23.08.1947)
MNQ 1964–2006
MQ 1964–2006
Mq 1964–2006
 MHQ 1964–2006
HHQ (27.06.1960) 		50 l / s
303 l / s
1.35 m³ / s
10.9 l / (s km²)
 20.2 m³ / s
70.5 m³ / s
Reservoirs flowed through Windachspeicher
Navigable on the Windachspeicher
The Windach near its mouth below Eching.

The Windach near its mouth below Eching.

The Windach is a 35 km long left tributary of the Amper near Eching am Ammersee in the Landsberg am Lech district in Upper Bavaria .

Headwaters

The Windach rises from the hilly moraine landscape west of the Ammersee . The right main strand upper course Hasenschorngraben is created about 2.9 km northeast of Rott at about 709  m above sea level. NHN in the damp Vilgertshofener forest , runs westward out of this and then touches the Hasenschorn on the left bank, crossed by drainage ditches, in its right turn to the north-northwestern course. It is about 2.8 km long.

The left upper course arises in a swampy wood in the municipality of Reichling between the village Gimmenhausen in the north and the parish village Ludenhausen in the west at about 695  m above sea level. NHN and flows about 1.8 km south-east to the junction with Hasenschorngraben at about 684  m above sea level. NHN , which is a little north of the municipality boundary to Rott.

course

The Windach that was created in this way initially runs northeast and through a northern foothill of the Vilgertshofener forest, in which it soon crosses into the municipality of Markt Dießen am Ammersee near its hamlet Wolfgrub . From here on, it flows for the greater part of its course parallel to the alignment of the Ammersee north to north-northeast, past Wolfsgrub and Dettenschwang , then between the small residential areas Weidhausen and Pauleberg and, after the tributary of the Hauser Bach from the left, at a distance to the east past Obermühlhausen . Then the Beurerbach flows from the right and near the triangle of the municipalities of Dießen, Hofstetten and Finning it reaches a swamp around the inlet of the Schlöglbach from the left, through which it runs into the Windachspeicher ( 625  m above sea level ).

After the reservoir it flows further north, takes on the Roßbach from the right and runs through the central districts of Finning that have grown together, after which it crosses the municipality boundary to Windach in a forest area north-northeast . In the village of Windach it turns to the east and then changes to the municipality of Greifenberg , in whose settlement Neugreifenberg the Fischbach flows from the left . Greifenberg itself passes it on its southern edge and then reaches the last municipality of Eching am Ammersee on its course. After the hamlet of Gießübl on the right bank, it crosses the route of the A 96 and then passes through the main town. East of this it flows a little north of the Ammersee from the left to about 532  m above sea level. NHN in the only 600-meter-long Amper , which has just leaked out of the lake at the opposite hamlet of Stegen from Inning am Ammersee .

The Hasenschorngraben, which is 35.8 km long with its main right upper course, flows about 177 meters below its origin and thus has an average bottom gradient of about 5 ‰.

Tributaries

From the source to the mouth. Lengths with upper reaches if necessary. Selection.

Further data

The mean annual precipitation is 1,100 mm.

Character & environment

Due to the local geological, geographical and meteorological conditions, the Windach has a pronounced torrent character. That is, it swells a lot after rainfall. In the lower reaches of the river from Finning, this behavior led to floods almost every year, with flooding of the lower lying corridors and damage to the edges of the too narrow river bed.

In order to prevent further damage, a flood retention basin called the Windach reservoir was built in 1961–1964 south of Finning in a glacial breakthrough valley with a kettle-shaped extension. Nevertheless, floods occurred again in the lower reaches of the Windach in the municipality of Eching in 1999 and 2000, which is why the Windach river bed was partially relocated and a new flood basin was built there in the years 2008-2009.

Origin of name

Windach is first recorded as a river name in 1346 as "pei der Windah", the place of the same name in 1158 as "Windaha". The name is made up of the Old High German basic word aha “water, river, stream” and a defining word that is likely to go back to a participle of Old High German wintan “wind, turn, whirl”, Middle High German wind “wind, turn”. The name therefore probably means "winding river", which perhaps expresses the fact that the windings of this watercourse often change greatly.

Web links

Commons : Windach (Amper)  - Collection of images

Individual evidence

  1. ↑ a b Height queried on: BayernAtlas of the Bavarian State Government ( information ) (right-click).
  2. ↑ Length according to: Directory of stream and river areas in Bavaria - Isar river area, page 52 of the Bavarian State Office for the Environment, as of 2016 (PDF; 2.5 MB)
  3. ↑ Catchment area according to: Directory of brook and river areas in Bavaria - Isar river area, page 52 of the Bavarian State Office for the Environment, as of 2016 (PDF; 2.5 MB)
  4. ^ German Hydrological Yearbook Danube Region 2006 Bavarian State Office for the Environment, p. 208, accessed on October 4, 2017, at: bestellen.bayern.de (PDF, German, 24.2 MB).
  5. ↑ Water Management Office Weilheim: Windachspeicher. URL: Archive link ( Memento from September 16, 2009 in the Internet Archive ), accessed on June 6, 2010
  6. ↑ "Our Windach got a bypass". Retrieved November 4, 2019 .
  7. ↑ Wolf-Armin Frhr. v. Reitzenstein : Lexicon of Bavarian place names. Origin and meaning . CH Beck, Munich 2006, ISBN 3-406-55206-4 , p. 305 . - Gerhard Köbler: Old High German Dictionary. 4th edition. 1993. Online ( Memento from January 1, 2008 in the Internet Archive ). - Matthias Lexer: Middle High German concise dictionary. Reprint of the edition Leipzig 1872–1878 (3 vols), S. Hirzel, Stuttgart 1992.