Reiss valley source

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Reiss valley source
Moated castle of the Reiss Valley spring

Moated castle of the Reiss Valley spring

Data
place Hinternaßwald , Schwarzau in the mountains
Client City vienna
Construction year 1890s
Coordinates 47 ° 44 '7.94 "  N , 15 ° 39' 58.32"  O coordinates: 47 ° 44 '7.94 "  N , 15 ° 39' 58.32"  O
Reiss Valley Spring (Lower Austria)
Reiss valley source
particularities
Source ; Monument protection
Site plan of the Vienna high spring pipelines (not far from the Wasseralm spring, lower center)

Site plan of the Vienna high spring pipelines
(not far from the Wasseralm spring , lower center)

The Reisstalquelle (older Reissthal- or Reistal- spelled, also Wahnquelle ) is a spring on the Rax in Lower Austria , which was taken for the first Viennese high spring water pipeline .

location

The source is located in the valley from Hinternaßwald am Nassbach , in the municipality of Schwarzau im Gebirge , at the entrance to the Reiss valley below the Scheibwald wall and Kahlmäuer , the northwestern abyss of the Rax massif.

history

The Reiss Valley spring is located in the Naßwald - Wasseralm area , a source area that was planned from the beginning as the main source of the high spring pipeline built in the course of the 1860s and opened in 1873. However, through the Reich Water Act of 1869 and the Lower Austrian State Water Act of 1870, the legal position of all those lying below, plant owners and municipalities, was significantly improved. Therefore, the City of Vienna had to fight their respective water law applications through all instances up to the Administrative Court. The spring was not connected to the water supply system until the mid-1890s.

Hydrology, construction and water protection

The source belongs to the hydrogeological barrier layer of the Werfen formation , underlain by the Grauwackenzone , which borders the Wetterstein limestone of the Rax-Schneeberg group to the west and south. The damming increases from 700 m at Naßwald to 1300 m at the Naßkamm . It arises from the debris backfill in the crack valley.

The spring catchment is a small, shaft-like water lock that leads down to the underlying clay layer at a depth of about 7 m. In addition, a suction channel was dug across the entire width of the valley to capture the tributaries occurring at the valley floor. This slab channel, slotted upstream, solid wall downstream, is 74 m long and has a 1.7 × 0.7 m cross-section. The Brunnhaus, like the whole of the first high spring pipeline , is a listed building .

The Reiss Valley spring pours around 70–200 liters per second, that is 6,000–17,000 cubic meters per day, which would make up a maximum of almost a tenth of the total output of the I. High Spring Line. But it gives a relatively constant 7–8,000 m³ / d. The temperature is fairly constant at 6.7 ° C. The water hardness is 9.9 ° dH, by far the most calcareous water in the pipe, which has an overall average of 7.3.

The large Rax – Schneeberg – Schneealpe water reserve has existed here since 1965 , and there is a strict water protection area within 500 meters . The grounds around Wasseralmquelle and Reisstalquelle belong to the City of Vienna to an extent of 2166.5 hectares. The water protection is entrusted by the Vienna MA 31 (Vienna Water) and MA 49 (Forestry Office) . In addition, there is the extensive nature reserve Rax – Schneeberg .

literature

  • [City of Vienna:] The water supply as well as the systems of the municipal electricity works, the Vienna river regulation, the main collecting canals, the city railway and the regulation of the Danube canal in Vienna. On behalf of the Mayor Dr. Karl Lueger edited the Stadtbauamt, self-published by the Vienna City Council, Vienna 1901, especially the version of the Reissthal Spring. P. 52 ff ( archive.org , in pdf p. 57 ff).
  • Hermann Stadler, Ralf Benischke, Elmar Strobl: Hydrogeology Schneeberg / Rax. Final report. Study by the Institute for Water Resource Management Hydrogeology and Geophysics, on behalf of the City of Vienna MA31 (as part of KATER  II), Graz, March 2008, esp. 4.3.4.3. Reisstalquelle , p. 69 f (source characterization); 4.10.5.3. Reisstalquelle , p. 155 f (detailed investigations); 4.11.4. The sources investigated in the Naßbachtal , p. 163 (catchment areas), and 4.7.3. Marking experiment Reißtal 1951 , p. 93 and 4.7.6. Färeversuch Reißtal 1967 , p. 99; Fig. 9: Reiss valley source, collecting shaft, p. 33 ( pdf , on ccwaters.eu, accessed May 7, 2015).

Individual evidence

  1. ↑ So also the entry in the Lower Austrian water book: Reiss valley spring or Wahn spring NK-001000
  2. ↑ Lit. Stadler, Benischke, Strobl: 2008, 3.1.6. Interpretation of the hydrogeological conditions, p. 11 ff.
  3. ↑ a b c lit. The water supply… 1901, p. 59 f.
  4. ↑ a b c Andreas Thurner: Hydrogeology. Springer-Verlag, 2013, ISBN 978-3-7091-7594-1 , table p. 249 ( limited preview in Google book search).
  5. ↑ Richard Artner: Hazard potential of spring protection areas as a result of tourist use - illustrated using the example of Rax . Diploma thesis, University of Vienna, Vienna, November 2002, Reißtalquelle , p. 69 (after Drenning, 1973; pdf , ccwaters.eu).
  6. ↑ Lit. The water supply ... 1901, p. 125.