Lüssel
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Lüssel upper course name: Vogelbergbach |
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 The Lüssel at Erschwil |
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| Data | ||
| Water code | CH : 2938 | |
| location | Canton of Basel-Country , Canton of Solothurn ; Switzerland | |
| River system | Rhine | |
| Drain over | Birs → Rhine → North Sea | |
| source | a little below the Berghaus Vogelberg in the area of the Passwangs 47 ° 22 ′ 16 ″ N , 7 ° 41 ′ 0 ″ E |
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| Source height | approx. 1077 m above sea level M. | |
| muzzle | at Zwingen at the southern foot of the Blauenkette in the Birs coordinates: 47 ° 26 '12 " N , 7 ° 31' 35" E ; CH1903: 606 623 / 253991 47 ° 26 '12 " N , 7 ° 31' 35" O |
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| Mouth height | 337 m above sea level M. | |
| Height difference | approx. 740 m | |
| Bottom slope | approx. 39 ‰ | |
| length | 19 km | |
| Catchment area | 53.72 km² | |
| Discharge at the mouth A Eo : 53.72 km² |
MQ Mq |
750 l / s 14 l / (s km²) |
| Left tributaries | Chessilochbach, Schwangbach, Wingengraben, Schlettgraben | |
| Right tributaries | Bogentalbach, Hinter Birtisgraben, Häxengraben, Möschbach, Rütenenbach | |
The Lüssel is an approximately 20 km long right tributary of the Birs in the Swiss cantons of Basel-Landschaft and Solothurn . It drains a 54 km² section of the northern Jura folds and belongs to the catchment area of the Rhine .
The headwaters of the Lüssel are located on the municipality of Lauwil in the canton of Baselland at around 1000 m above sea level. M. in the area of the Passwang . In its upper reaches, the Lüssel flows west through the Bogental , which is flanked in the south by the Passwang and in the north by the Geitenberg . It forms a pond near the Bogental estate. Soon afterwards it flows through a narrow gorge ( Chessiloch ) and crosses over to the Solothurn canton area. Now the Lüssel flows through the narrow valley of Beinwil , cut deep into the Jura chains . It receives water from both sides through various short tributaries, which give the area a strongly chambered structure. Narrow breakthroughs through the hard limestone alternate in rapid succession with valley widths created by clearing the softer clay and marl layers.
Shortly before Erschwil , the Lüssel makes a sharp curve and turns north. It crosses the Erschwil basin before another narrow valley follows between the heights of Chienberg and Lingenberg , which is dominated by the Neu-Thierstein ruins . The Lüssel then enters the Laufen basin, which it crosses from south to north in a wide valley basin. Below Breitenbach it reaches the area of the canton of Baselland again. At Zwingen at the southern foot of the Blauenkette it flows out at 335 m above sea level. M. in the Birs.
The Lüssel is characterized by a pluvial runoff regime . The lower course of the Lüssel has been corrected and partially straightened on some stretches. Large parts of the middle and upper reaches have been preserved in a near-natural or natural state. By Lüsseltal the Passwangstrasse that an important link between the runs Laufental and Swiss plateau produces.
Web links
Individual evidence
- ↑ a b c Geoserver of the Swiss Federal Administration ( information )
- ↑ a b Modeled mean annual discharge. In: Topographical catchment areas of Swiss waters: sub-catchment areas 2 km². Retrieved August 10, 2017 .