Suhre

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Suhre
Suhre between Suhr and Oberentfelden

Suhre between Suhr and Oberentfelden

Data
Water code CH : 495
location Switzerland
River system Rhine
Drain over Aare  → Rhine  → North Sea
origin near Oberkirch LU from Lake Sempach
47 ° 9 ′ 44 ″  N , 8 ° 7 ′ 17 ″  E
Source height 504  m above sea level M.
muzzle flows east of Aarau into the Aare Coordinates: 47 ° 24 '22 "  N , 8 ° 3' 58"  E ; CH1903:  647 363  /  250764 47 ° 24 '22 "  N , 8 ° 3' 58"  O
Mouth height 360  m above sea level M.
Height difference 144 m
Bottom slope 4.2 ‰
length 34 km
Catchment area 368.29 km² 
(2.6 km above the mouth)
Outflow
location: 2.6 km above the mouth 		MQ
 6.45 m³ / s
Left tributaries Uerke
Right tributaries Ruederche and Wyna
Suhre (Switzerland)
source
source
muzzle
muzzle
Source and mouth of the Suhre

The Suhre (also Sure ) is a 34 km long tributary of the Aare . It flows through the Suhrental in the Swiss cantons of Lucerne and Aargau .

Names

In medieval documents the river had different names: Suron (1036), Suranum flumen (1210), Sure (1241). Since the 20th century, Suhre has been written mostly , and Sure is rare in the canton of Lucerne .

geography

course

The Suhre rises in the Sempachersee in the municipality of Oberkirch (altitude 504 meters) and flows into the Aare east of Aarau at an altitude of 360 meters.

The most important side valley is the Ruedertal , which branches off in a south-easterly direction near Schöftland .

Catchment area

The catchment area of ​​the Suhre is 368.29 km² and consists of 28.3% wooded area , 54.7% agricultural area , 4.0% water surface and 12.9% settlement area .

The mean height of the catchment area is 580  m above sea level. M. , the minimum height is 360  m above sea level. M. and the maximum height at 871  m above sea level. M.

Tributaries

  • Hofbach ( left )
  • Oberchilerwaldbach ( left )
  • Chommlibach ( right )
  • Zollbach ( right )
  • Dorfbach ( right )
  • Schoenebuehlbaechle ( right )
  • Erlenstudbaechlein ( right )
  • Schlegruetigrabenbach ( Obermoosgrab ) ( right )
  • Weiherbach ( Dorfbach ) ( right )
  • Engelgrabe ( Ängelgrabe ) ( right )
  • Hexenbach ( Häxebächli ) ( right )
  • Dorfbach ( left )
  • Dorfbach ( right )
  • Fischbach ( Dorfbach ) ( left )
  • Steinbaerenbach ( right )
  • Dorfbach ( left )
  • Gründelbach ( Teuffegrabe ) ( right )
  • Sägetgrabebach ( left )
  • (Bach vom) Rütiberg 4 ( right )
  • Dorfbach Attelwil ( Hölibach ) ( left )
  • Dorfbach ( right )
  • Seeblibächli ( left )
  • Eigraben ( left fork )
  • Rostbrunnenbächli ( left )
  • Dorfbach Kirchleerau ( right )
  • Ruederchen ( right )
  • Haselbach ( right )
  • Talbach ( right )
  • Talbach ( right )
  • Tannacherbach ( right )
  • Uerke ( left )
  • Schifflibach ( left )
  • Talbächlein ( right )
  • Stadtbach Rathaus ( left split )
  • Wyna ( right )
Terminal moraine near Staffelbach

Moraines

At the height of Staffelbach , the 30-meter-high terminal moraine from the Würme Ice Age , which was formed when the Reuss Glacier retreated , runs across the Suhrental . Up the valley are the lateral moraines on both sides of the valley on the ridges.

Corrections

Sursee / LU: Suhre and houses on Surengasse

The Suhre has been flowing through Sursee as a canalised city stream since the 13th century . The main tributaries are the Wyna and the Uerke .

In 1760 and from 1806 to 1814 the outflow from the Sempachersee was lowered. Up to the 19th century the river in the Suhrental was strongly meandering ; the valley floor was mostly swampy. Since then, several river straightenings have been carried out:

  • 1856–59 from Sursee to the canton border
  • 1893–98 in Knutwilermoos
  • 1923–26 partial correction in the canton of Aargau
  • 1943–45 partial correction in the canton of Aargau
  • 1945–56 renewed correction in the canton of Lucerne
  • 1973-75 in Sursee (with deeper lowering and straightening of the river)

Web links

Commons : Suhre  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b Geoserver of the Swiss Federal Administration ( information )
  2. ↑ Evaluations of the water network. (XLSX) FOEN , December 2013, accessed on August 9, 2017 (listing of Swiss rivers> 30km).
  3. ↑ a b c Topographical catchment areas of the Swiss waters: Suhre (2.6 km above the mouth)
  4. ↑ Height at the mouth
  5. ↑ Schoenebuehlbaeche, probably wrongly on the geoportal
  6. ↑ Name after Dorfbachstrasse
  7. ↑ Right branch from the little thumb