Rohrach (Eyb)
| Rohrach | ||
 Rohrach waterfall |
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| Data | ||
| Water code | DE : 238226 | |
| location | Baden-Württemberg ; Germany | |
| River system | Rhine | |
| Drain over | Eyb → Fils → Neckar → Rhine → North Sea | |
| source | At the Steigmühle in the upper area of the Geislinger Steige north of Amstetten 48 ° 35 '22 " N , 9 ° 51' 42" E |
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| Source height | 517 m above sea level NN | |
| Spring discharge |
MQ MHQ |
250 l / s 3.4 m³ / s |
| muzzle | In Geislingen in the Eyb coordinates: 48 ° 37 '32 " N , 9 ° 50' 10" E 48 ° 37 '32 " N , 9 ° 50' 10" E |
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| Mouth height | approx. 435 m above sea level NN | |
| Height difference | approx. 82 m
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| Catchment area | 57 km² | |
The Rohrach is a left tributary of the Eyb in Geislingen in the district of Göppingen , Baden-Württemberg . Your valley is one of the five namesake of the "fifth valley town" Geislingen. The Geislinger Steige railway line runs along the eastern slope of the valley , below the B 10 trail .
Rohrachquelle
The Rohrach spring is at 517 m above sea level. NN between the Geislinger residential areas Ziegelhütte and Steigmühle, about 1,500 m north of Amstetten . It rises from the limestones of the well-layered limestone formation in a karst spring pouring up to 3,400 l / s, on average approx. 250 l / s . When there is heavy rainfall, a dry trench above the Rohrach spring also carries water. In places the water can almost dry out.
geography
The above-ground catchment area of the Rohrach covers around 57 square kilometers, the southern limit of its catchment area is the European watershed, Atlantic-Black Sea .
The Rohrachtal lies on the route of the Ur- Lone , which drained a wide region before today's Alb eaves in the opposite direction to the southeast at an even higher level.
The bottom of the Rohrachtal valley is characterized by Jura slope debris and numerous limestone deposits .
In the past twelve mills used the hydropower of the approximately six kilometers long Rohrach to grind grain and generate electricity. In the 8th century, the former mill town of Rorgensteig, which is still remembered by a street name in Geislingen, was established.
From the source of the Rohrach to the waterfall, the Rohrachtal has been a nature reserve since 1982. The 13 hectare protected area is a nationally significant wetland with a particularly high ornithological importance. Since September 2009, a two-kilometer-long, handicapped accessible nature trail has been leading through the Rohrachtal.
The Rohrach is partially overturned in the Geislingen urban area before it flows into the Eyb below the municipal sports field. The natural course of the river was changed in the Middle Ages. It was led along the western section of the city wall for better defense.