Chirel
|
Chirel Kirel |
||
 Chirel in the Diemtigtal |
||
| Data | ||
| Water code | CH : 1695 | |
| location |
Bernese Oberland
|
|
| River system | Rhine | |
| Drain over | Simme → Kander → Aare → Rhine → North Sea | |
| source | at the hut Hinderste Chirel 46 ° 33 ′ 57 ″ N , 7 ° 33 ′ 38 ″ E |
|
| Source height | 1515.1 m above sea level M. | |
| muzzle | at Oey in die Simme coordinates: 46 ° 39 '37 " N , 7 ° 34' 35" E ; CH1903: 610 543 / 167681 46 ° 39 '37 " N , 7 ° 34' 35" O |
|
| Mouth height | 670 m above sea level M. | |
| Height difference | 845.1 m | |
| Bottom slope | 69 ‰ | |
| length | 12.2 km | |
| Catchment area | 128.7 km² | |
| Discharge A Eo : 128.7 km² at the mouth |
MQ Mq |
3.75 m³ / s 29.1 l / (s km²) |
| Left tributaries | Fildrich | |
| Right tributaries | Goldbach | |
The Chirel , also known as Kirel , is a twelve kilometer long mountain stream in the Diemtigtal and in the canton of Bern . It is a southern and right tributary of the Simme .
geography
course
The Chirel rises at an altitude of 1400 m above sea level. M. at a shooting range in the Hintersten Chirel between the 1734 m above sea level. M. high Chirelschafberg in the west and the 2357 m above sea level. M. Wyssi Flue in the east.
It flows north through the largely wooded Diemtigtal, initially at the eastern foot of 1708 m above sea level. M. high Schwarzeberg and is fed there on its right by the Pletschebächli coming from the southeast . In Horboden him then flows the water-rich there from left Fildrich to.
The Chirel now squeezes between the Soumewald on the left and the Wattfluewald through a narrow valley and takes up the Goldbach from the right and finally flows into Oey- Diemtigen at an altitude of 670 m above sea level. M. from the right into the Simme .
Its approximately 12.2 km long run ends approximately 845 meters below its source, so it has an average bed gradient of 69 ‰.
Catchment area
The 128.7 km² catchment area of the Chirel lies in the Diemtigtal and is drained to the North Sea via the Simme, the Kander , the Aare and the Rhine .
It borders
- in the east to that of the Kander , which flows into the Aare over Lake Thun
- in the southeast to that of the Engstlige tributary of the Kander
- in the south to that of the Färmelbach , which flows into the Simme
- in the southwest of the catchment areas of the two Simme tributaries Betelriedgraben and Mariedgraben
- in the west to that of the Goldbach , also a tributary of the Simme
- and in the northwest to the catchment areas of the Eigraben , the Chlosterbach and the Steinibach , all of which flow into the Simme.
The catchment area consists of 29.0% wooded area , 49.0% agricultural area , 1.4% settlement area , 0.2% water area and 20.4% unproductive areas.
The mean height of the catchment area is 1636 m above sea level. M. , the minimum height is 667 m above sea level. M. and the maximum height at 2647 m above sea level. M.
Tributaries
Inflows of the Chirel are listed from the source to the mouth with length in km, catchment area in km² and mean discharge (MQ) in m³ / s. The names of the tributaries come from the Geoportal Kanton Bern and the data come from the Swisstopo geosystem .
- Ramsegräbli ( left ), 2.4 km, 2.99 km²
- Schryendgrabe ( right ), 2.8 km, 2.93 km²
- Zigerbodebächli ( right ), 1.1 km
- Pletschebächli ( right ), 3.5 km, 2.19 km²
- Jungsgrabe ( right ), 0.5 km
- Portbächli ( right ), 0.2 km
- Chlosebächli ( right ), 3.3 km, 3.12 km²
- Fildrich ( left ), 17.4 km, 86.77 km², 2.54 m³ / s
- Teuffebach ( right ), 3.8 km, 3.06 km²
- Rütigrabe ( right ), 1.1 km, 1.75 km²
- Schmittegräbli ( right ), 0.3 km
- Brüggbach ( right ), 1.0 km
- Wattfluegräbli ( right ), 0.2 km
- Goldbach ( right ), 3.3 km, 3.75 km², 0.11 m³ / s
- Rossgrabe ( right ), 0.4 km
Hydrology
Main hydrological strand
Direct comparison of the two upper reaches at the confluence:
| Surname | length
[in km] |
EZG
[in km²] |
MQ
[in m³ / s] |
|---|---|---|---|
| Chirel | 8.0 | 28.61 | 0.88 |
| Fildrich | 17.4 | 86.77 | 2.54 |
The longer Fildrich also has the larger intake system and is richer in water. It is thus the main hydrological branch of the Chirel river system . The total length of the Chirel-Fildrich line is 21.3 km.
Discharge data
At the confluence of the Chirel in the Simme, its modeled mean flow rate (MQ) is 3.75 m³ / s. Its discharge regime type is nival alpine and its discharge variability is 18.
The modeled monthly mean discharge (MQ) of the Chirels in m³ / s
2005 flood
In August 2005, what was actually a harmless mountain stream became a destructive river: after 48 hours of continuous rain, the level of the mountain stream rose so high that the village of Oey was destroyed. It was flooded for four and a half days as the course of the stream was clogged with driftwood and debris along the entire length of the village. Most of the connecting road to the rear Diemtigtal was washed away. After this event, the stream was rebuilt, new dams were built and the course of the stream widened. Exactly 100 days after the event, the connecting road between Oey and Horboden was reopened, but in 2009 a bridge in Oey was renewed. Damage of around three billion Swiss francs was caused .
ecology
The river has a largely natural or near-natural eco-morphology, only in the last kilometer before it flows into the Simme are larger barriers to prevent flooding in the cultivated land and the village of Oey. The water quality is largely very good, the Chirel is considered unpolluted.
As a representative of the fish fauna , mainly brown trout live in the Chirel ; rarely also rainbow trout and other salmonids , isolated bullheads in the lower reaches .
use
Like many Swiss bodies of water, the Chirel is also used to generate energy; In its course there are two water extraction points, at one of which more than 50% of the average amount of water is withdrawn: This extraction point is located in the upper reaches of Riedere at 1,077 meters above sea level. , from there the water is led through a tunnel system into the Simme near Wimmis . The drainage of the water creates a so-called residual water section , which covers over half of the course of the river. A smaller extraction point is located below Horbode at around 780 m. ü. M. in the lower course.
In addition, the Chirel is used for fishing .
Web links
Individual evidence
- ↑ a b Geoserver of the Swiss Federal Administration ( information )
- ↑ a b c Topographical catchment areas of Swiss waters: Kirel
- ↑ Topographic catchment areas of the Swiss waters: Kirel (upper reaches)
- ↑ Topographic catchment areas of Swiss waters: Fildrich
- ↑ "Hidden behind the mean values" - the variability of the discharge regime , p. 7
- ↑ The discharge variability describes the extent of the fluctuations in the mean discharge of individual years around the long-term mean discharge value.
- ↑ Flood information from Oey-Diemtigen and the Diemtigtal ( Memento from January 27, 2007 in the Internet Archive )
- ↑ Archived copy ( memento of the original from January 19, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. When Switzerland held its breath: The flood of the century in the Bernese Oberland - SRF. Retrieved December 21, 2014.
- ↑ bve.be.ch: Renovation report Chirel / Fildrich ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
