Knotzenbach

	Knotzenbach
	Upper course of the Knotzenbach
	Data
location	Vienna , Austria
River system	Schwechat
Drain over	Left Liesingtal collecting canal → Liesingbach → Schwechat → Danube → Black Sea
source	in wall ; 48 ° 9 ′ 6 ″ N , 16 ° 15 ′ 2 ″ E
muzzle	In Atzgersdorf underground in the left Liesingtal collecting canal coordinates: 48 ° 8 '44 " N , 16 ° 17' 35" E 48 ° 8 '44 " N , 16 ° 17' 35" E;
length	3.2 km (length of the Bach Canal)
Left tributaries	Lindgrabenbach

The Knotzenbach is a brook in the 23rd district of Liesing in Vienna . It is a feeder of the left Liesingtal collecting canal and is mostly managed as a brook canal .

course

Source of the Knotzenbach in the Maurer Forest

The Knotzenbach rises near the Minichlacke in the Maurer Forest , in the Schwarzgraben between the Kroissberg and the Georgenberg . From Kroißberggasse it is run as a 3164 m long brook canal. This runs at a depth of 4 to 6 m and has a gradient of 30 to 55 ‰ in its upper section and from 5.7 to 19 ‰ in its lower section. To the east of the center of Mauer , it takes up the Lindgrabenbach canal . At the intersection of Knotzenbachgasse and Canavesegasse in Atzgersdorf , the Knotzenbach flows underground into the left Liesingtal collecting canal.

At the Knotzenbach there is no risk of flooding. In the event of a flood of the century , neither the infrastructure nor the resident population are affected.

history

As a result of a heavy flood of the Knotzenbach, the Atzgersdorfer school was moved to another location in 1824. The Bach Canal was built from 1949 to 1957. It replaced previous inadequate covers of the stream. Its course was partially changed.

ecology

A well-preserved maple - hornbeam ditch forest with a high proportion of dead wood is located on the upper reaches of the stream . Old pointed maples , field maples , Zerr oaks , hornbeams and ash trees as well as younger mountain maples grow here .

Web links

Commons : Knotzenbach - Collection of images, videos and audio files

Knotzenbach in the Vienna History Wiki of the City of Vienna

Individual evidence

↑ ^a ^b ^c Hans Stadler: The drainage systems of the city of Vienna . Municipal Department 30, Municipal Authority of the City of Vienna, Vienna 1960, p. 56–57 ( digital.wienbibliothek.at [PDF; accessed on January 3, 2020]).
↑ MA 45, review of the discharge capacity of various torrents in connection with flood protection. Activity report 2014. (PDF) City Audit Office Vienna, April 2014, p. 8 , accessed on January 3, 2020 .
↑ Julia Tanzer: Historical morphological changes in the southern Vienna Danube feeder 1755-2010 . Master thesis. University of Natural Resources and Life Sciences, Vienna 2016, p. 50 ( boku.ac.at [PDF; accessed January 3, 2020]).
↑ Johanna Scheiblhofer, Wolfgang Schranz: Diverse Nature in Liesing. (PDF) Biosphärenpark Wienerwald Management GmbH, October 2019, p. 86 , accessed on January 3, 2020 .

[Stadler_56_57-1] Hans Stadler: The drainage systems of the city of Vienna . Municipal Department 30, Municipal Authority of the City of Vienna, Vienna 1960, p. 56–57 ( digital.wienbibliothek.at [PDF; accessed on January 3, 2020]).

[2] MA 45, review of the discharge capacity of various torrents in connection with flood protection. Activity report 2014. (PDF) City Audit Office Vienna, April 2014, p. 8 , accessed on January 3, 2020 .

[3] Julia Tanzer: Historical morphological changes in the southern Vienna Danube feeder 1755-2010 . Master thesis. University of Natural Resources and Life Sciences, Vienna 2016, p. 50 ( boku.ac.at [PDF; accessed January 3, 2020]).

[4] Johanna Scheiblhofer, Wolfgang Schranz: Diverse Nature in Liesing. (PDF) Biosphärenpark Wienerwald Management GmbH, October 2019, p. 86 , accessed on January 3, 2020 .