Rossau quarry pond

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Rossau quarry pond
Rossau quarry pond (Innsbruck) .jpg
East bank
Geographical location Tyrol , Austria
Places on the shore innsbruck
Data
Coordinates 47 ° 15 '56.4 "  N , 11 ° 26' 47.9"  E Coordinates: 47 ° 15 '56.4 "  N , 11 ° 26' 47.9"  E
Baggersee Rossau (Tyrol)
Rossau quarry pond
Altitude above sea level 561  m above sea level A.
surface 3.6 ha
Maximum depth 14.3 m
Catchment area 43 hectares
Template: Infobox See / Maintenance / EVIDENCE AREA
The quarry pond from the northwest with the Inn

The Baggersee , officially Badesee Rossau , is located on the eastern outskirts of Innsbruck near the Inn in the Rossau . With an area of ​​3.6  hectares , it is the largest lake in the city.

history

Gravel has been mined by a construction company on the site of today's quarry since 1960. Over time, the pit filled with groundwater and was used for bathing. After the lease expired in 1975, the city of Innsbruck wanted to level the gravel pit and build a district heating power station in its place . Instead, a citizens' initiative called for it to continue to exist as a bathing lake. After testing the water quality, the local council decided in 1977 to adapt it accordingly. From 1978 to 1979 the lake was redesigned, the banks were flattened, the area was planted and an initial infrastructure was set up.

After acts of vandalism, the area was fenced in in 1986 and cordoned off overnight. From autumn 1991, the area was expanded by 15.6 million schillings, the water area was enlarged from 2.8 to 3.6 hectares and the facility from 6.4 to 9 hectares. Children's playgrounds and sports facilities have been set up and reeds and water plants have been planted on the bank areas. The newly designed facility was opened in the summer of 1992 and entry has to be paid for since then.

ecology

The quarry pond is fed by groundwater and has no natural inflow or outflow. Nutrient- rich deep water is drained through an Olszewski pipe . With the groundwater level, the lake level fluctuates by several meters over the course of the year. The quarry pond shows a stable eutrophic ground state. A high density of floating algae indicates a significant nutrient load. In 2017, visual depths between 1.5 and 2 m were measured. In 2016, the microbiological bathing water quality was rated as excellent in the western area and good in the eastern area. The water temperature reaches around 19 to 24 ° C in summer.

Various species of fish such as perch and arbor were used in the quarry pond. In 1983, twelve different fish species were counted in the lake, including ornamental fish and exotic fish not native to Tyrol such as the American sunfish . Other animal species that occur are red-eared tortoises , crayfish and the New Zealand pygmy snail .

use

Since its opening, the quarry pond has developed into a popular local recreation area, especially for the residents of Reichenau and the Olympic Village , which has been connected to the New Orleans Bridge over the Inn since 1983. In 2013, 128,000 bathers were counted. In addition to the bathing lake, there are facilities for beach volleyball , table tennis , badminton , basketball , streetball , boccia and chess on the premises . Competitions such as triathlons also take place here.

Web links

Individual evidence

  1. ↑ a b State survey service: Depth map Baggersee Innsbruck (PDF; 1.2 MB)
  2. ↑ a b c d Federal Ministry for Health and Women and Office of the Tyrolean Provincial Government (ed.): Bathing water profile Badesee Rossau, West. Vienna 2017 ( PDF; 4.6 MB )
  3. ↑ a b c d Natalie Pedevilla: The quarry pond in Rossau. In: Innsbruck informs, August 2002, p. 26 ( digitized version )
  4. ↑ Roßau Baggersee is getting bigger and more beautiful. In: Innsbrucker Stadtnachrichten, No. 9, September 18, 1991, p. 1 ( digitized version )
  5. ↑ State of Tyrol: Bathing water monitoring 2017 (PDF; 291 kB)
  6. ↑ Federal Ministry for Health and Women and Office of the Tyrolean Provincial Government (ed.): Badegewässerprofil Badesee Rossau, Ost. Vienna 2017 ( PDF; 4.4 MB )
  7. ↑ a b B. Klausnitzer, R. Rauch: A place of discovery of the New Zealand dwarf snail Potamopyrgus antipodarum (GRAY 1843) in North Tyrol (Gastropoda: Prosobranchia: Hydrobiidae). In: Newsletter of the First Vorarlberger Malacological Society, Volume 4 (1996), pp. 9–11 ( PDF; 3.1 MB )
  8. ↑ IKB: The swimming season starts in Innsbruck. meinviertel.at of April 29, 2014
  9. ↑ In May over the pioneer bridge to the quarry pond. In: Innsbrucker Stadtnachrichten, No. 3, March 16, 1983, p. 1 ( digitized version )
  10. ↑ The history of the quarry pond. meinviertel.at from May 20, 2014