Bachtobelgraben (Schäflibach)
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Bachtobelgraben Riedmattenbach, Rietmattenbach (ML) |
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 Bachtobelgraben in the lower part of the ravine |
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| Data | ||
| Water code | CH : ZH100403 | |
| location |
Switzerland
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| River system | Rhine | |
| Drain over | Schäflibach → Limmat → Aare → Rhine → North Sea | |
| source | Eastern slope of Honeret 47 ° 22 ′ 39 ″ N , 8 ° 24 ′ 29 ″ E |
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| Source height | approx. 529 m above sea level M. | |
| muzzle | in Niederurdorf in the Husacher area in the Schäflibach Coordinates: 47 ° 23 ′ 30 ″ N , 8 ° 24 ′ 59 ″ E ; CH1903: 673 811 / 249 441 47 ° 23 '30 " N , 8 ° 24' 59" O |
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| Mouth height | 402 m above sea level M. | |
| Height difference | approx. 127 m | |
| Bottom slope | approx. 55 ‰ | |
| length | 2.3 km | |
| Catchment area | 1.4 km² | |
| Left tributaries | Moosacherbach | |
 Bachtobelgraben at the exit of the ravine with a sediment barrier in the background |
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The Bachtobelgraben (in the middle course also Riedmattenbach ) is a 2.3 kilometer long left tributary of the Schäflibach in the municipality of Urdorf in the canton of Zurich . The stream, which until 1931 formed a section of the municipal boundary between Oberurdorf and Niederurdorf , drains the eastern part of the Honeret forest area .
geography
course
The longest source arm of the Bachtobelgraben rises at about 529 m above sea level. M. in the Honeretsrain on the eastern slope of the Honeret hill. It flows to the east and immediately passes under a nameless forest road which branches off a little further north from Allmendlistrasse . After a short run to the southeast in the direction of the edge of the forest and Reppischtal , it turns to the northeast and reaches Allmendlistrasse , where immediately after crossing it at 515 m above sea level. M. the source of the longest source brook is shown.
The Bachtobelgraben crosses the forest area first in a northeastern direction, then in a northwestern direction, receiving four unnamed tributaries. After the confluence of the last tributary, it turns again to the northeast in the direction of the Urdorfer Senke. The brook crosses under the Roman grave road , where there is a small forest hut, and from the left takes its longest tributary in the Honeret. From here it forms a small ravine and at the same time overcomes several wooden structures. After around 110 meters, it crosses under the base road and reaches the Rain corridor , where it directly overcomes three concrete barriers.
After a bed load barrier, the stream now reaches the edge of the forest, where there is another bed load barrier before crossing under a field road. It now flows through the fields at Flur Rain on a north-easterly course, slightly deepened and accompanied by a forest edge , before briefly following the western bypass Zurich and finally crossing under it.
The stream reappears in a small wood and is now also called Riedmattenbach. After a short stream to the north, it is overtaken . First running under the edge of the wood, it is only a little later directed to the east and crosses under the fields of the Riedmatten corridor . After a dirt road, it runs into the Zwüschenbächen corridor , where it is also directed to the northwest. The brook crosses under the family gardens at Zwygarten and takes on the Moosacherbach (also Stampfelbach ), which is also overturned, from the left .
The stream is now called Bachtobelgraben again and immediately reaches the Vordere Rüti area . Shortly afterwards, after the Dorfstrasse near Husacher in Niederurdorf, the brook comes back to the surface after a 940 meter long run. After another 130 meters, the Bachtobelgraben finally flows out at 402 m above sea level. M. from the left and southwest into the lower reaches of the Schäflibach.
Catchment area
The catchment area of the Bachtobelgraben measures 1.4 km², of which 52.5% is wooded area , 34.7% is agricultural area and 12.8% is settlement area. The highest point is 580 m above sea level. M. about 10 meters north of the Honeret hill, the average height is 460 m above sea level. M. It extends mostly over the community Urdorf, small parts belong to the community Dietikon.
In the west lies the catchment area of the Aegertenbach , the Tobelbach and the Stoffelbach , all of which drain into the Reppisch . In the southeast it borders on that of the Allmendbach , which also flows into the Schäflibach.
photos
Concrete structures in the rain
Construction made of wood at the Römergrabstrasse
Bachtobelgraben when there is little water in November
Web links
- Course of the Bachtobelgraben on GIS Zurich
- Course of the Bachtobel trench on the geoserver of the Swiss federal administration
swell
Individual evidence
- ↑ a b Measured on the longest source branch geographic information system of the Canton of Zurich
- ↑ Geoserver of the Swiss Federal Administration ( information )
- ↑ a b c catchment area of the Bachtobel trench. In: Topographical catchment areas of Swiss waters: sub-catchment areas 2 km². Retrieved September 28, 2017 .