Biglenbach
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Biglenbach commercial canal |
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 Biglenbach between Biglen and Walkringen |
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| Data | ||
| Water code | CH : 1295 | |
| location |
Mittelland
|
|
| River system | Rhine | |
| Drain over | Emme → Aare → Rhine → North Sea | |
| Headwaters | near Oberthal on the northern slope of the bladder river 46 ° 56 ′ 1 ″ N , 7 ° 41 ′ 38 ″ E |
|
| Source height | approx. 1081 m above sea level M. | |
| muzzle | near Hasle near Burgdorf in the Emme Coordinates: 47 ° 0 '55 " N , 7 ° 39' 28" E ; CH1903: 616 661 / 207153 47 ° 0 '55 " N , 7 ° 39' 28" O |
|
| Mouth height | 566 m above sea level M. | |
| Height difference | approx. 515 m | |
| Bottom slope | approx. 26 ‰ | |
| length | 19.7 km | |
| Catchment area | 51.1 km² | |
| Discharge at the estuary A Eo gauge : 51.1 km² |
MQ Mq |
980 l / s 19.2 l / (s km²) |
| Communities | Oberthal , Arni , Biglen , Walkringen , Worb , Hasle | |
The Biglenbach is a roughly 20 km long left tributary of the Emme in the Swiss canton of Bern . It drains a section of the hill country between the Aare valley and the Emmental and belongs to the catchment area of the Rhine .
geography
course
The headwaters of the stream are located at around 1080 m above sea level. M. on the parish grounds of Oberthal on the wooded north slope of the bladder river . It flows first to the west through the high valley of Arni , where it is still called Arnibach. With the Arnimoos, this has a flat valley floor about 500 m wide, which is flanked by the hills of the western foothills of the bladder river. Below Arnisäge the brook overcomes a height difference of 100 meters over a distance of 2 km.
In the village of Biglen , the Biglenbach describes an arc to the north. It flows through the wide depression of the Walkringen moss , which it leaves at Walkringen to the north. Afterwards it flows with a constant gradient of 2% through the Bigental , a mostly about 500 m wide valley that separates the heights of Mänziwilegg and Wägesse in the west from the hill country of the Blasenflue in the east. The main road and the railway line , which lead from Burgdorf via Konolfingen to Thun , run through the Bigental .
Below Schafhausen in the Emmental, the Biglenbach enters the wide valley of the Emmental. It flows into Hasle near Burgdorf at 570 m above sea level. M. in the Emme .
Catchment area
The 51.1 km² catchment area of the Biglenbach is drained to the North Sea via the Emme, the Aare and the Rhine .
It borders
- in the northeast and east to that of the Goldbach , which flows into the Emme
- in the southeast to that of the Emme tributary Nidermattgraben
- in the south to that of the Aare tributary Chise
- in the southwest to the Worble , also a tributary of the Aare
- and in the west then to that of the village stream Oberburg , which flows into the Emme.
The catchment area consists of 29.8% wooded area , 62.9% agricultural area , 7.0% settlement area and 0.3% water area.
Area distribution
The mean height of the catchment area is 796 m above sea level. M. , the minimum height is 565 m above sea level. M. and the maximum height at 1116 m above sea level. M.
Tributaries
Various short side streams flow to the Biglenbach from the hilly area with its strong relief: the most important of these are the Widimattgrabenbach (from the left) and the Talgrabenbach (from the right). The Biglenbach is characterized by a pluvial discharge regime .
- Arnibach ( right ), 0.8 km
- Chäsetelbächli ( left ), 0.7 km
- Chapfbächli ( left ), 1.1 km
- Lugibächli ( right ), 0.3 km
- Höllgrabe ( left ), 1.5 km
- Rotbächli ( left ), 0.3 km
- Haslibach ( left ), 0.7 km
- Fröschbach ( left ), 3.8 km
- Änetbächli ( right ), 1.0 km
- Änggisteibach ( left ), 4.3 km
- Erligrabe ( left ), 1.4 km
- Büelgräbli ( left ), 0.4 miles
- Sonderwasser ( right ), 1.0 km
- Zilgrabe ( left ), 0.4 km
- Matteigrabe ( right ), 0.6 km
- Chlyzilgräbli ( left ), 0.5 km
- Änetbiglegrabe ( left ), 0.3 km
- Änetbiglegrabe ( left ), 0.4 km
- Änetbiglegrabe ( left ), 0.4 km
- Seggergraben ( right ), 0.8 km
- Minzlimeegrabe ( right ), 0.5 km
- Hoschbach ( left ), 1.9 km
- Chatzbach ( left ), 0.8 km
- Eygrabe ( right ), 0.7 km
- Obermadgrabe ( right ), 0.8 km
- Stadellochgrabe ( left ), 0.6 km
- Rossweidligräbe ( left ), 0.4 km
- Hizeregrabe ( right ), 1.0 km
- Rubegrabe ( left ) 0.4 km
- Gringlechegrabe ( right ), 0.5 miles
- Leimeregrabe ( left ), 0.3 km
- Widimattgrabe ( left ), 3.7 km, 3.32 km²
- Leuegrabe ( right ), 1.1 km
- Bitterachergrabe ( right ), 0.9 km
- Toggbach ( right ), 0.8 km
- Gomerchingegrabe ( left ), 1.3 km
- Rohrigrabe ( right ), 1.7 km
- Talgrabenbach ( left ), 6.4 km, 6.51 km², 0.12 m³ / s
Hydrology
At the confluence of the Biglenbach in the Emme, its modeled mean flow rate (MQ) is 980 l / s. Its discharge regime type is pluvial supérieur and its discharge variability is 24.
The modeled monthly mean discharge (MQ) of the Biglenbach in l / s
use
As a result of the agricultural use of the valley floors, large sections of the Biglenbach have been canalized, partially straightened and the embankments reinforced. Near-natural or natural parts of the route are only a few left. There was still a small lake in Walkringenmoos in the Middle Ages . This silted up, however, and the moss was meliorated in the course of the 19th century and converted into meadow or cultivated land.
As early as the middle of the 14th century , a canal to Enggistein was created in Walkringenmoos, based on a trade. Part of the water was diverted from the Biglenbach and fed to the Enggisteinbach , a source brook of the Worblen. Due to the design of the wooden weir, almost all of the water flowed to the Enggisteinbach at low and medium water levels in the Biglenbach; the lower part of the Biglenbach therefore usually carried very little water and was only fed again by side streams. The Water Protection Act of 1992 stipulated the amount of residual water in streams and rivers. As a result, the water distribution at the weir had to be re-regulated, so that significantly less water is diverted into the canal to Enggistein today than before.
The hydropower of the Biglenbach was previously used, especially in the area of Biglen and Arni, for the operation of mills, sawmills and forges.
Web links
Individual evidence
- ↑ a b c Geoserver of the Swiss Federal Administration ( information )
- ↑ Water network in the WebGis geographic information system of the canton of Bern
- ↑ Modeled mean annual discharge. In: Topographical catchment areas of Swiss waters: area outlets. Retrieved November 2, 2015 .
- ↑ a b Topographical catchment areas of Swiss waters: Biglenbach
- ↑ "Hidden behind the mean values" - the variability of the discharge regime , p. 119
- ↑ The discharge variability describes the extent of the fluctuations in the mean discharge of individual years around the long-term mean discharge value.