Saar (Rhine)

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Saar
upper course: Great Saar
Data
Water code CH : 2384
location Canton of St. Gallen
River system Rhine
Drain over Vilterser-Wangser Canal  → Rhine  → North Sea
source in the Mitteläss, Bad Ragaz
46 ° 59 ′ 0 ″  N , 9 ° 26 ′ 30 ″  E
Source height 2087  m above sea level M.
muzzle in the Vilterser-Wangser Canal coordinates: 47 ° 3 '42 "  N , 9 ° 27' 48"  E ; CH1903:  753797  /  214 279 47 ° 3 '42 "  N , 9 ° 27' 48"  O
Mouth height 477  m above sea level M.
Height difference 1610 m
Bottom slope 15%
length 10.7 km
Catchment area 24.2 km²
Discharge at the A Eo estuary gauge : 24.2 km²
MQ
Mq
 		690 l / s
28.5 l / (s km²)
Communities Bad Ragaz , Vilters-Wangs , Mels , Sargans

The Saar is an almost eleven kilometer long stream that flows east by Vilters in the Swiss canton of St. Gallen and in the St. Gallen Oberland. It rises in the Mitteläss, which belongs to the municipality of Bad Ragaz .

geography

course

The Saartobel extends north-west and crosses the 380 kV Bonaduz-Breite line . The stream changes its direction to the northeast, forms the Saarfall and flows through a pond . In front of this pond it has been followed by the 380 kV Sils – Fällanden line for about a kilometer since the 1990s . In the Rhine plain it is canalised and flows to the northwest and then to the north. On its right side it takes up the Saschielbach and touches the motorway junction of the A3 and the A13 at 491  m above sea level. M. On its last section, it crosses the Sarganser Au and flows into the Vilterser-Wangser Canal , which is fed with water by the Grossbach and the Vilterserbach .

Tributaries

  • Small Saar ( left ), 3.1 km
  • Vadanabach ( left ), 1.5 miles
  • Saschielbach ( right ), 6.8 km
  • Silbergiessen ( right ), 1.4 km
  • Chrome casting ( right ), 3.2 km
  • Kaltgiessen ( right ), 1.2 km

River history

At the beginning of the 19th century, the Saar still ran in a winding shape through the Rhine plain and only gradually merged with other torrents. Since the bottom of the Rhine by the deposition of sediment swampy fields and meadows raised increasingly. The Saar was corrected for the first time between 1855 and 1862; the excavation resulting from the construction of waterways was used to erect the dams for the Chur – Rorschach railway line . In the course of the correction, the mouth of the Saar was relocated 700 meters down the Rhine to the mouth of the Trübbach. At the same time, gravel traps were built on the torrents, other streams were straightened and numerous drainage ditches were built in the plain. Attempts were made to counteract further river bed elevations between 1898 and 1908 by widening and deepening the lower course of the Saar. In 1927 and 1954, floods in the Rhine led to a backwater in the Saar and flooding of large areas. After the floods of 1954, the mouth of the Saar was relocated again 2.5 kilometers down the Rhine. This lower part of the Saar is now part of the Vilterser-Wangser Canal.

Individual evidence

  1. ↑ a b c d Geoserver of the Swiss Federal Administration ( information )
  2. ↑ General catchment area number 168893. In: Topographical catchment areas of Swiss waters: area outlets . Retrieved October 23, 2015 .
  3. ^ Hans Rohner: The inland water correction in the St. Gallen Rhine Valley. In: Internationale Rheinregulierung (Ed.): The Alpine Rhine and its regulation. International Rhine Regulation 1892–1992. 2nd edition, BuchsDruck, Rorschach 1993, ISBN 3-905222-65-5 , pp. 294-300, here pp. 294, 296.