Pfudabach

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Pfudabach
Pfuda; Aubach (upper course)
Data
location Innviertel , Upper Austria
River system Danube
Drain over Pram  → Inn  → Danube  → Black Sea
source below the Ameisberg in Sauwald
48 ° 28 ′ 4 ″  N , 13 ° 39 ′ 8 ″  E
Source height approx.  710  m above sea level A.
muzzle at Taufkirchen an der Pram in the Pram coordinates: 48 ° 24 '28 "  N , 13 ° 32' 49"  E 48 ° 24 '28 "  N , 13 ° 32' 49"  E
Mouth height approx.  330  m above sea level A.
Height difference approx. 380 m
Bottom slope approx. 17 ‰
length 21.8 km
Catchment area 95.6 km²
Discharge at Alfersham
A Eo gauge : 81.3 km²
Location: 3.72 km above the mouth 		NNQ (October 16, 2008)
MNQ 1976–2011
MQ 1976–2011
Mq 1976–2011
 MHQ 1976–2011
HHQ (August 12, 2002) 		2 l / s
470 l / s
1.26 m³ / s
15.5 l / (s km²)
 20.4 m³ / s
70.8 m³ / s
Left tributaries Kenadinger Bach, Hackinger Bach
Right tributaries Diersbach
Communities Kopfing im Innkreis , Diersbach , Sigharting , Taufkirchen an der Pram

The Pfudabach , also the Pfuda , is a right tributary of the Pram in the Innviertel in Upper Austria .

course

The Pfudabach rises as Aubach near Mitteredt (municipality of Kopfing in the Innkreis ) below the Ameisberg in the Sauwald . It flows roughly in a southerly direction, at Angsüß it turns to the west, shortly afterwards again to the south. It then flows in a loop around Sigharting , then north-west until it joins the Pram at Taufkirchen an der Pram .

Water flow

The mean discharge at the Alfersham gauge is 1.26 m³ / s, which corresponds to a discharge rate of 15.5 l / s · km². The Pfudabach has a winter pluvial runoff regime . The monthly mean of the month of March with the most discharge is at 1.96 m³ / s, around twice as high as that of the month of October with the least discharge, with 0.92 m³ / s.

To protect the settlements from flooding, the second largest retention basin in Upper Austria was created near Angsüß, with a volume of 1.2 million m³. In the case of a full damming, which is reached during a flood event lasting around sixty years, the damming area is around 35 ha.

ecology

The lower reaches of the Pfudabach in the communities of Diersbach and Sigharting still have numerous near-natural stretches with winding to meandering course and accompanying gallery forests . Here dominate alder , ash , birch and oak and black cherry , hazel , elder and willow . There are also extensive wet meadow complexes, which represent a habitat for rare bird, amphibian and insect species, including the common snipe , the dragonfly and the marsh insect .

In the Pfudabach and its tributaries there is the densest population of the endangered Ukrainian brook lamprey ( Eudontomyzon mariae ) in Upper Austria, which is distributed over the widest stretch of water . The rare river pearl mussel is also native to the Pfudabach.

Individual evidence

  1. ↑ a b c Digital Upper Austrian Room Information System (DORIS)
  2. ^ Office of the Upper Austrian Provincial Government (Ed.): Pram, Investigations on Water Quality, Status 1992 - 1994 . Water protection report 8/1995, Linz 1995 ( PDF; 99.5 MB )
  3. ↑ a b Federal Ministry of Agriculture, Forestry, Environment and Water Management (ed.): Hydrographisches Jahrbuch von Österreich 2011. 119th volume. Vienna 2013, p. OG 155, PDF (12.9 MB) on bmlrt.gv.at (yearbook 2011)
  4. ↑ Helmut Mader, Theo Steidl, Reinhard Wimmer: Discharge regime of Austrian rivers. Contributions to a nationwide river typology. Federal Environment Agency, monographs Volume 82, Vienna 1996, p. 99 ( PDF; 14.7 MB )
  5. ↑ Protection against flooding - Pfudabach retention basin Angsüß ready soon. nachricht.at of September 4, 2014
  6. ^ Office of Upper Austria. Provincial government (Hrsg.): Natural area mapping Upper Austria - landscape survey of the municipality of Sigharting. Final report, Kirchdorf an der Krems 2009 ( PDF; 5.8 MB )
  7. ^ Office of Upper Austria. Provincial government (ed.): Natural area mapping Upper Austria - landscape survey of the municipality of Diersbach. Final report, Kirchdorf an der Krems 2009 ( PDF; 5.9 MB )
  8. ↑ Habitat improvement on the Pfudabach. In: Natur & Landschaft, Volume 97, Issue 4, 2011, p. 17 ( PDF; 1.4 MB )
  9. ↑ Clemens Ratschan: Concept to improve the habitat for lampreys in the Pfuda area. 2010 ( PDF; 8.3 MB ( Memento of the original from October 21, 2014 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. ) @1@ 2Template: Webachiv / IABot / www.blattfisch.at
  10. ^ Clemens Gumpinger, Wolfgang Heinisch, Johannes Moser, Thomas Ofenböck, Claus Stundner: The river pearl mussel in Austria. Federal Environment Agency, Monographs Volume 159, Vienna 2002