Waldaist
| Waldaist | ||
 Waldaist near the Pfahnlmühle near Pregarten |
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| Data | ||
| location | Freistadt district , Mühlviertel , Upper Austria | |
| River system | Danube | |
| Drain over | Aist → Danube → Black Sea | |
| origin | The confluence of the Black and White Aist at Weitersfelden 48 ° 28 ′ 14 ″ N , 14 ° 43 ′ 20 ″ E |
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| Source height | approx. 680 m above sea level A. | |
| confluence | with the Feldaist to Aist in Hohensteg (Gem. Tragwein ) Coordinates: 48 ° 19 ′ 12 ″ N , 14 ° 33 ′ 55 ″ E 48 ° 19 ′ 12 ″ N , 14 ° 33 ′ 55 ″ E |
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| Mouth height | approx. 310 m above sea level A. | |
| Height difference | approx. 370 m | |
| Bottom slope | approx. 6.3 ‰ | |
| length | 58.5 km | |
| Catchment area | 350 km² | |
| Discharge at the Pfahnlmühle A Eo gauge: 266.1 km² Location: 2.41 km above the mouth |
NNQ (08.11.1983) MNQ 1976–2010 MQ 1976–2010 Mq 1976–2010 MHQ 1976–2010 HHQ (13.08.2002) |
80 l / s 860 l / s 3.25 m³ / s 12.2 l / (s km²) 33.8 m³ / s 195 m³ / s |
 Left the lighter White Aist and right the darker Black Aist at the confluence with the Waldaist south of Weitersfelden |
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The Waldaist (Slav. Aist / Agasta "quickly") is a river in the eastern (lower) Mühlviertel of Upper Austria .
Run and landscape
It is formed by the union of Schwarzer Aist and Weißer Aist south of Weitersfelden . The source rivers arise near the border with the Czech Republic between the Freiwald and the Weinsberger Wald . The Waldaist flows in a southerly direction and joins after about 50 km at Schwertberg with the Feldaist to the Aist , which flows into the Danube near Mauthausen .
The catchment area of the Waldaist covers about 350 km², that of the (west) parallel Feldaist about 265 km².
Source rivers: Black and White Aist
Both source rivers arise just next to each other in the municipality of Liebenau at an altitude of about 1,020 meters. While the White Aist flows in a fairly straight direction to the south, the Black Aist collects some streams on its much longer path, first north, then west and south, including the Harbe Aist (near Harrachstal ), which is in the southern municipality area rises from Sandl. When it joins the White Aist south of Weitersfelden , the Black Aist carries considerably more water; it is also the longest headwaters of the Aist.
The boggy character of the area around the Schwarzen Aist causes the river's typical brown color. The White Aist, on the other hand, hardly flows through bog areas, which makes the color of the river much lighter.
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Places on the Waldaist
Important places on the Waldaist are Sandl (near the northwestern headwaters of the Schwarzen Aist), Weitersfelden , Reichenstein (south of Gutau ) and - after the union to the Aist - the industrial city of Schwertberg . Well-suited bathing spots can be found on the Waldaist in Reichenstein and Hohensteg.
Flora and fauna
The Waldaist valley is part of the protected Natura 2000 area Waldaist-Naarn . The river pearl mussels and the head are worth protecting . The river pearl mussel occurrence in the Waldaist is the largest in all of Central Europe.
The main fish species found in the Waldaist are: brown trout , brook trout , grayling and rainbow trout .
literature
- Josef Zötl: Large formation and valley history in the Waldaist area. In: Yearbook of the Upper Austrian Museum Association. 96th Volume, Linz 1951 ( online (PDF) in the forum OoeGeschichte.at as well as PDF on ZOBODAT ).
- Gerhard Pils: The Waldaist valley in the lower Mühlviertel - a natural area worth protecting. Linz 1982 ( PDF (1 MB) on ZOBODAT ).
- Gerhard Pils and Franz Berger: The Waldaist Valley as reflected in its flora. Festschrift opening u. Inauguration ceremony of the Reichenstein elementary school. ( PDF ; 57 kB).
- Klaus Berg, Clemens Gumpinger, Simonetta Siligato: Defense register of the Aist and its tributaries. Water protection report 41st Office of the Upper Austrian Provincial Government, Directorate Environment and Water Management, Department Surface Water Management, Linz 2009, pp. 41–46 ( PDF; 5,844 kB on land-oberoesterreich.gv.at).
Web links
- Territories & waters. Free City. In: lfvooe.at.
- Bibliography on Waldaist in the forum OoeGeschichte.at.
Individual evidence
- ↑ Digital Upper Austrian Room Information System (DORIS)
- ↑ Federal Ministry of Agriculture, Forestry, Environment and Water Management (ed.): Hydrographisches Jahrbuch von Österreich 2010. 118th volume. Vienna 2012, p. OG 209, PDF (12.6 MB) on bmlrt.gv.at (yearbook 2010)
- ↑ Water Protection Report 41 , pp. 41–46.
- ↑ See: Province of Upper Austria: Waldaist (measuring points: Hohensteg and Reichenstein) (to the Waldaist bathing water)
- ↑ See: Homepage of the Upper Austrian State Fisheries Association: Waldaist near Gutau ( memento of the original from October 26, 2007 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.
