Trattnach in the municipality of Wallern an der Trattnach
|Drain over||Innbach → Danube → Black Sea|
|muzzle||at Scharten in the Innbach
|Height difference||approx. 330 m|
|Bottom slope||approx. 7.9 ‰|
|Catchment area||196.4 km²|
| Discharge at the Bad Schallerbach
A Eo gauge : 184 km²
Location: 5.12 km above the mouth
|100 l / s
600 l / s
50.1 m³ / s
272.3 l / (s km²)
115 m³ / s
12.08 m³ / s
|Left tributaries||Rottenbach, Stillbach|
|Right tributaries||Steinbach, Leitnerbach|
|Reservoirs flowed through||Trattnachspeicher Leithen|
|Residents in the catchment area||approx. 29,000|
The Trattnach is a river in Upper Austria with a length of about 40 km. Together with the Innbach and Aschach, it is part of the water system that drains the northern Hausruckviertel to the east towards the Danube .
The Trattnach rises at about 620 m above sea level in the Grubwald on the northeast slope of the Hausruck in the municipality of Geboltskirchen . It is fed from pit water from former lignite mines. It initially runs northeast. At the municipal boundary between Geboltskirchen and Weibern , it is dammed to regulate floods in the Trattnach reservoir Leithen. The Trattnach then passes Weibern, Hofkirchen an der Trattnach and Taufkirchen an der Trattnach , where it turns to the southeast. It flows on through Grieskirchen , Schlüßlberg and Bad Schallerbach and flows into the Innbach below Wallern an der Trattnach , near Oberndorf in the community of Scharten at 290 m above sea level. The mouth and a few hundred meters are in the Eferding district , otherwise the Trattnach runs entirely in the Grieskirchen district .
In the first three kilometers, the Trattnach has a gradient of 3.3%. This flattens out quickly, in the middle reaches 7.3 ‰ and in the lower reaches only 3.6 ‰. The mean gradient over the entire route is 7.7 ‰.
The Trattnach has three larger feeders with catchment areas of more than 10 km²: the Rottenbach flows from the left at Hofkirchen, the Stillbach just one kilometer below from the left and the Leitnerbach at Grieskirchen from the right.
The name is derived from the Middle High German draete ('fast, hasty') and ahe (flowing water, stream / river), similar to Trattenbach. The first "h" of Dratihaha in the handwriting is apparently a typo ; The correct name should be Dratinaha - pronounced "Dratin-acha", the 'Drat (i) n-bach'.
The fact that the town of Trattnach is not at the mouth, as is usually the case, but in the headwaters (near women ) shows that the very old relationship to a [h] a, aue is at work here, in 1368 people still say " located [... ] on the Drætnach ”in the sense of a hallway.
The mean discharge (MQ) at the Bad Schallerbach gauge, 5.1 km before the mouth, is 2.3 m³ / s, which corresponds to a discharge of only 12.5 l / s · km². The winter pluvial discharge regime shows a moderately strong amplitude. The March maximum is roughly three times the September minimum.
Use of the water
The Trattnach has been used to operate mills and generate electricity for several centuries. Of the 21 hydropower plants that once existed in 1930, only 5 are left today. Meadow irrigation was often carried out in connection with the reservoirs required for this.
The Trattnach has a relatively natural state only in the upper reaches and on the last kilometers below Wallern to the mouth. From Hofkirchen onwards, it was massively straightened and strictly regulated. The course of the river, which used to meander , has become a canal-like channel, which is only accompanied by a strip of wood in a few places.
The catchment area of the Trattnach is used intensively for agriculture: 45% of the catchment area is arable land, livestock farming also plays a major role (88 LU / km²). As a result, as well as industrial companies in the Grieskirchen area, the Trattnach is significantly polluted. It has water quality class II over long stretches , in the Grieskirchen area II to III (status 2007).
The Trattnach has relatively high water temperatures (around 16 ° C in summer), which are also due to human influence. The causes of the anthropogenically caused warming are probably the Leithen retention basin and the heavy construction with a lack of shade. The warming affects the fish population, especially the salmonids are negatively affected.
Especially after heavy rains, there were repeated floods through the Trattnach. For protection, a flood retention system was built in Leithen on the municipal boundary between Weibern and Geboltskirchen, which was put into operation in 1985. A swimming lake is separated from the actual flood retention basin by an intermediate dam. The lake has an area of 3 ha and a maximum depth of 4.5 m, the north bank is covered with reeds. In addition to bathing, it is also used for fishing and, in winter, if it is frozen over, for ice skating and curling. Despite nutrient input, especially during floods and the strong warming in summer, the water quality is classified as good.
Trattnachtal educational trail
The 2 km long Trattnachtal educational trail is located in Wallern an der Trattnach . Ecological contexts are explained on 22 display boards and the flora and fauna of the region are presented.
- Office of the Upper Austrian Provincial Government (ed.): Trattnach and Innbach, Investigations on Water Quality. Status 1992 - 1994. Water protection report 11/1995, Linz 1995 ( PDF (268.7 MB) on ZOBODAT ).
- Federal Ministry for Agriculture, Forestry, Environment and Water Management (Ed.): Hydrographisches Jahrbuch von Österreich 2009. 117th Volume. Vienna 2011, PDF (12.1 MB) on bmlrt.gv.at (yearbook 2009)
- K. Schiffmann: Historical place names lexicon of the state of Upper Austria. Volume 3, Linz 1940; quoted in: Herbert Erich Baumert: The coats of arms of the cities, markets and communities of Upper Austria (4th supplement 1973-1976) In: Upper Austrian homeland sheets. Issue 1/2, 1977, p. 27 ( online (PDF) in the forum OoeGeschichte.at)
- Documentary d. L. whether d. Enns 8, 381 No. 385; Information from Richard Müller: New preparatory work on old Austrian place-names. In: Association for regional studies of Lower Austria and Vienna: Blätter , Volume 20, 1887, Chapter V. Singular names. 1.A.1. Parz bei Weibern and Trattnach im Innviertel , p. 153 (about the toponym Parz ; whole article 70–196; eReader archive.org ).
- Office of the Upper Austrian Provincial Government (ed.): Pollinger Ache and Enknach and summary of the results of the Inn and Hausruck districts and their comparison with the central area, investigations on water quality. Status 1992-1995. Water protection report 12/1995, Linz 1995 ( PDF (177.4 MB) on ZOBODAT ).
- Office of Upper Austria. State government: water quality maps
- H. Prinz et al .: Reaction of selected fish species to different water temperatures in Upper Austrian rivers , project report 2009 ( lfvooe.at PDF; 8.9 MB).
- C. Gumpinger, K. Berg & S. Höfler: Investigations into the temperature regime of the Trattnach (Upper Austria). Annual report on the first year of the study, March 1, 2008 to February 28, 2009. Wels 2009 ( Blattfisch.at ( memento of the original from April 8, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original - and archive link according to the instructions and then remove this note. PDF; 4.3 MB).
- Province of Upper Austria: Trattnachspeicher