Maag
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Maag Weeser Linth |
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 The Maag west of Weesen |
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| Data | ||
| Water code | CH : 492867 | |
| location | Switzerland | |
| River system | Rhine | |
| Drain over | Linth → Limmat → Aare → Rhine → North Sea | |
| source | at Under Ruestel above Weesen 47 ° 8 ′ 38 ″ N , 9 ° 5 ′ 17 ″ E |
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| Source height | approx. 830 m above sea level M. | |
| muzzle | in front of the Biberlichopf in the Linth Canal Coordinates: 47 ° 7 '48 " N , 9 ° 4' 8" E ; CH1903: 723 678 / 221183 47 ° 7 '48 " N , 9 ° 4' 8" O |
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| Mouth height | 419 m above sea level M. | |
| Height difference | approx. 411 m | |
| Bottom slope | approx. 13% | |
| length | approx. 3.1 km | |
| Catchment area | 2.34 km² | |
The Maag , also called Weeser Linth , is a stream in Switzerland near Weesen in the canton of St. Gallen . The Maag used to divert the water from the Walensee into the Linth . This limnological task was taken over by the Linth Canal in connection with the Linth correction (from 1807 to 1822). The remaining part of the Maag flows in the north of the then newly created canal and flows into the Linth Canal below the Biberlichopf .
Maag correction
In the 18th century, extensive deforestation in the Glarnerland led to increased erosion and debris flows , and the debris was deposited by the Linth in the Linth plain . As a result, the Maag was dammed so heavily that the water from the Walensee could no longer flow away and the lake level began to rise. So it came in the Lin plateau and around the Walensee to backwater-related floods; the population fell ill with malaria and tuberculosis and became impoverished.
In order to remedy this homemade natural disaster, a water body correction was carried out under the direction of Hans Conrad Escher : With the Linthwerk, the Linth near Mollis was diverted through the Escherkanal into Lake Walen and the Maag was led through the Linth Canal into Lake Zurich . The Maag flowed into the Linth at Ziegelbrücke . This is also the reason for the somewhat confusing naming: The Linth flows through the Escherkanal into the Walensee; this drains through the Linth Canal into Lake Zurich.
Web links
- Linth correction
- Peter Ziegler: Linth (river). In: Historical Lexicon of Switzerland .
Individual evidence
- ↑ a b c Geoserver of the Swiss Federal Administration ( information )
- ↑ Topographical catchment areas of Swiss waters: sub-catchment areas 2 km². Retrieved September 24, 2017 .
- ↑ Whether this discharge actually bore the name «Maag» is a matter of dispute in name research; see Limmat # Origin of the name . Hans Jacob Leu calls the discharge in his General Helvetic or Swiss Lexicon (XIX. Theil, Zurich 1764, p. 98, article Wallenstadter- or Wallen-See ) like the upper course “ Seez ”.