Sembach (Reuss)

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Sembach
Lindenberg, Wiggwil in the center of the picture, Auw in the foreground

Lindenberg, Wiggwil in the center of the picture, Auw in the foreground

Data
Water code CH : 11040
location Canton of Aargau , Switzerland
River system Rhine
Drain over Reuss  → Aare  → Rhine  → North Sea
source in the justice forest near Wiggwil below Horben Castle
47 ° 12 ′ 50 ″  N , 8 ° 20 ′ 2 ″  E
Source height 759  m
muzzle formerly in the Reuss near Mühlau , now in the left-hand inner canal of the Reuss plain Coordinates: 47 ° 13 '42 "  N , 8 ° 23' 40"  E ; CH1903:  672 395  /  231258 47 ° 13 '42 "  N , 8 ° 23' 40"  O
Mouth height 390  m
Height difference 369 m
Bottom slope 54 ‰
length 6.8 km
Catchment area approx. 5.3 km²
Communities Beinwil , Auw , Mühlau

The Sembach is a 7 km long stream in the canton of Aargau and a left tributary of the Reuss . It drains a narrow strip of land on the eastern slope of the Lindenberg in the communities of Beinwil (Freiamt) and Auw and reaches the Reuss plain near the village of Mühlau .

course

The six Sembach springs are located below Horben Castle in a largely wooded area of ​​the lateral moraines of the Ice Age Reuss Glacier on the Lindenberg in several small erosion channels. About one kilometer north is the source area of ​​the Wissenbach , which also slopes down to the Reuss, and less than a kilometer separates the Sembach springs in the south from the course of the Mariahaldenbach , a source tributary of the Sinserbach .

The narrow valley of the Sembach leaves the wooded moraine range at the village of Wiggwil, which belongs to the municipality of Beinwil. He used to feed a Teuchelweiher above the village . In the village letter from 1749 the duties of the residents to maintain the three footbridges and the bridge as well as the water sleepers are laid down. Until the construction of the local water supply in 1895, two well carriers in Wiggwil supplied the drinking and industrial water for the residents.

The stream crosses a flat step below the village and flows to the Eichmühle, first mentioned in 1564, a fief mill of the Muri monastery , which the new tenant Heini Bär had to build to replace an older mill closer to the village. At the new location in the Eichmatte, additional water from the northern catchment area of ​​the Mariahaldenbach and from the Krebsbach could be channeled into the Mühleweiher. According to the fiefdom of 1766, the mill on Sembach also included a house, a granary , an oil grater and the lower Wyssmühle. After the abolition of the Muri monastery in 1841, the cantonal monastery administration sold the Eichmühlegut in 1842 to Rupert, Johann and Heinrich Villiger. The historic sawmill built in 1862 below the Eichmühle am Sembach, the pond of which still exists south of the Sembach, has found its way into the federal inventory of cultural assets of regional importance as a cultural object .

The Sembach flows from the Eichmühle over the approximately one kilometer wide plain between Rustenschwil and Auw. It then crosses further, partially wooded moraines that divert the stream to the north. When the Sembach emerges into the Reuss plain, the village of Mühlau lies on the small alluvial cone created by the stream . The place name, first mentioned in the 13th century, is probably derived from an old mill on the Sembach. In the ravine above the village, to the right of the Sembach, is the mill pond.

Southeast of Mühlau crossed by the year 1881 the Aargau Southern Railway route opened, the current railway line Lenzburg - Red Cross of SBB , the valley of Sembachs on a railway bridge.

Hydraulic engineering

Since the first amelioration of the Reuss plain by the canton Aargau around 1860, the Sembach no longer flows directly into the Reuss at the bridge from Mühlau, but at the same point into the inland canal to the west of the new Reuss dam, which drains the plain from Mühlau to Rottenschwil . Around 1960 the canal in the plain north of Mühlau received a newly created river bed and now also accommodated the Landbach emerging from Chestenberg into the plain . The new piece of canal was called the intermediate canal (secondary canal) to the Reuss Canal. During the second major renovation of the Reuss plain around 1975, the canals near Mühlau were rebuilt and led around the nature reserve near Oberschoren. The water from the sloping streams and the drainage canals reaches the Reuss through pumping stations.

fishing

The lower reaches of the Sembach near Mühlau is assigned to the Aargau fishing district No. 104 Reuss Canal .

Around 2012, the canton of Aargau built small protective structures against flooding on the Sembach.

literature

  • Canton of Aargau, Landscape and Waters Department: Report on remediation of bed load budget. Aarau 2014.

Individual evidence

  1. ↑ a b c d Geoserver of the Swiss Federal Administration ( information )
  2. ↑ Heinrich Kreyerbühl-Moser (among others): Beinwil / Freiamt - Zeitbilder of a rural community. Beinwil / Freiamt 1988, p. 42.
  3. ↑ Eichmühle In: Aargauer Zeitung , January 31, 2013. Retrieved October 17, 2016
  4. ↑ Heinrich Kreyerbühl-Moser (among others): Beinwil / Freiamt - Zeitbilder of a rural community. Beinwil / Freiamt 1988, pp. 46, 58, 150.
  5. ↑ www.ortsnames.ch
  6. ^ Anne-Marie Dubler: Müller and mills in the old state of Lucerne. Lucerne 1978. page 189.
  7. ^ Reuss Valley Foundation
  8. ^ Heinrich Jäckli (inter alia): Canton Aargau. Rehabilitation of the Reuss valley level, a partnership project. Aarau 1982.
  9. ^ Karl Zünd, Hans-Jörg Frey: The basic concept of hydraulic engineering systems. In: Schweizerische Bauzeitung 1976, pp. 315–318.
  10. ↑ Canton Aargau Fisheries Inspectorate