Auer Mühlbach

Auer Mühlbach, location in Munich

Template: Infobox River / BILD_fehlt

The Auer Mühlbach is approximately seven kilometers long, fed from Isar water and now mostly channeled Stadtbach in the south of Munich. He runs to the east of the main arm of the Isar River along the slope edge of the cliff and is classified as waters of the third order with a constant inflow and outflow of 10 cubic meters per second.

• 2.1 Derivation of the Isar Werkkanal
• 2.2 Outcome
• 2.3 inflows
• 2.4 feeders
• 2.5 Abandoned feeders

History

Long before the "official" city Munich was founded, the water power of the river Isar was used for the operation of mills. Since the Isar to the increasing regulation from the 19th century was a wild mountain river, often changed its course and strong level fluctuations had, they built the mill wheels in the Munich area not on unpredictable main arm, but on a regulated, artificially derived sidearm with as constant water management, the mill stream. The first written mention of the stream and a mill to Kiesingenum (now Untergiesing ) is found in a document from the year 957

In the first half of the 13th century, the first large Isar weir was built in the south of Munich at the level of Marienklause on the eastern bank of the Isar part, forcing the river to the west to meet the water needs of the emerging city. Even then mounted in a regulated weir sluice flow to the Auer Mühlbach.

In addition to the driving force for grain, hammer and fulling mills, sawmills and grinding shops of Mühlbach and the other city streams also provided drinking water for the house and garden, for dyeing and tanning and to delete the previously frequent dangerous fires. At the same time the streams were used for the disposal of sewage and waste of all kinds

Original course

The Isar had in today's city of Munich as a mountain river to the end of the 19th century, a relatively broad, its way repeatedly varying bed with plenty of gravel islands and tributaries. The Auer Mühlbach is such an old part of the Isar, which was increasingly regulated and channeled through the centuries. Since 1330 at the height of today's Marienklause a first large dam was built to force the water of the Isar for the needs of the growing city to the west, the river branched at the Auer Senkbaum compared to today's central border from through a lock from the eastern banks of the Isar.

Course

Derivation from the Isar Werkkanal

In order to meet the growing needs of the city of electric current was applied from 1905 to 1907 west parallel to the Isar Isar- work channel through which the potential of the Isar could be used for larger hydropower plants. Since the construction of the plant Isar 1 ( Südwerk ) in the year 1906, the Auer Mühlbach is near the raft landing at river kilometer 153.30 (48 ° 5 ' 31 " N, 11 ° 32' 55" O48.09185311.548702 ) to the weir which the extension of Marie Klaus web forms, discharged from this channel, direction flows in a roughly 160 meter long culvert (tunnel ), the course downriver at the edge of the barrage of Marie Klausbrücke be read, in the northeast of the Isar and enters below the Marienklause just before the southern end of the Hellabrunn Zoo on the east side of the river in the former floodplains to light.

Additionally, there is just above the Dükerendes a lock from the Isar itself, this is, however, most of the time dry and is only used for Isar water to relieve the river over the Auer Mühlbach.

This elaborate construction should guarantee to the hydraulic engineering knowledge of the respective time constant as possible water influx for the mills and water power plants on the Mühlbach at low water of the Isar.

Outcome

In the zoo, able to meet its water needs over a large number of groundwater and slope sources largely independently, offers the designed Auer Mühlbach in many networked habitats of a large number of animal and plant species a home.

After leaving the zoo the creek flows through Untersiebenbrunn between the lower edge of the slope and allotments continue north and passes it the Kraemer'sche art mill and the power plant bakers mill. In Untergiesing he was transferred for the first time under the earth.

The way of the Auer Mühlbach leads ( partially built over ) through the neighborhoods Untergiesing and Au.

Originally led the Mühlbach against the Praterinsel back into the Isar. Since an extension of 1893, he will, however, channeled parallel led to the Isar, a piece continues underground below the Maximilian work through and opens halfway between Maximiliansbrücke and Luitpold Bridge at river kilometer 146.60 ( range: 48 ° 8 ' 21 " N, 11 ° 35' 39 " O48.13913111.594091 ) just downstream of the plant Maximilian and the northern tip of Praterinsel back into the Isar.

Inflows

The only long tributary of the Auer Mühlbach is the Harlachinger source stream, which is also called Siebenbrunner Bächl. Its origin is at the edge of the slope of the mountain in Harlachinger Hellabrunn. During the Auer Mühlbach something runs from the edge of the slope, the Harlachinger source Bach remains close to the edge of the slope and is fed from several sources between the zoo and the inn Untersiebenbrunn. About 300 meters behind Untersiebenbrunn it flows into the Auer Mühlbach. Also on its further course receives the Auer Mühlbach amplification of different slope sources, eg at the source road and below the Gasteig.

Feeders

The Aubach, also called Aubächl, is a tributary of the Auer Mühlbach, which branches off to the zoo by this. It has a length of 1.4 kilometers and has a water volume of 0.4 m³ / s During the Auer Mühlbach flows near the edge of the slope of the Isar shore, the Aubächl remains near the Isar River and flows into many turns through the southern river Isar. At the height of Flaucher a part of the water was previously discharged into the river Isar. From here the river is called Freibadbächl. It expands to two split duck pond, passes under the railway line and into the nursery Bischweiler in which he since its reconstitution in 2010, is an essential element. It is then passed through the underground Schyrenbad he once supplied and that gave it its name. North of the Schyrenplatzes it flows back open by the spring plants, then continues underground in an outlet channel and flows just upstream from the Museum Island in the Little River Isar.

Shortly before the former Kraemer'schen Kunstmühle branches of Kunstmühlnebenbach or Kunstmühle tributary, also called oxidation ditch, the Auer Mühlbach from and united after about 440 m behind the mill with him again.

Slightly downstream of the Mariahilf square branches of Kegelhofbach on the Auer Mühlbach, but flows only 250 meters away back to him.

Abandoned feeders

Several earlier branches of the Auer Mühlbach have now been abandoned. These include the duck creek that still underground flowed past the children of Charles Valentin at his parents' house and was abandoned in 1901, the Auer false creek, the Falkenbächl and created for the operation of Muffatwerk as Brunnhaus Muffatbrunnhauskanal.

Use

Even today serves the Auer Mühlbach for energy. The Kraemer'sche Kunstmühle generated until its closure in 2007 with hydroelectric power about a quarter of the electrical energy required by it. Today, energy is fed into the grid. Also, the power plant bakers mill and the Maximilian factory supply electric power. Other power plants are no longer in operation, but in Muffatwerk a hydroelectric power plant is to be built again.