Wehratalsperre

Wehratalsperre
Reservoir created by the dam; the dam is behind the right bend of the lake.
Location: Waldshut district Tributaries: Wehra Larger places nearby: Weir
Baden-Wuerttemberg , Germany
Coordinates	47 ° 38 '58 "  N , 7 ° 55' 18"  E Coordinates: 47 ° 38 '58 "  N , 7 ° 55' 18"  E
Data on the structure
Construction time:	1971-1974
Height above valley floor:	37 m
Height above foundation level :	50 m
Height of the structure crown:	420.5  m
Building volume:	400 000  m³
Crown length:	235 m
Crown width:	5 m
Slope slope on the air side :	1: 1.75
Slope slope on the water side :	1: 1.75
Data on the reservoir
Altitude (at congestion destination )	419 m
Water surface	0.25 km²
Reservoir length	1.6 km
Reservoir width	0.2 km
Storage space	4.10 million m³
Total storage space :	4.10 million m³
Catchment area	66.15 km²
Design flood :	160 m³ / s

The Wehratalsperre is a dam of the Wehra near Wehr in the district of Waldshut in Baden-Württemberg . As the lower basin of the Hornberg level ( Wehr power plant ), it is part of the Schluchseewerk . The upper basin of the pumped storage power plant is the Hornberg basin ; the cavern with the power plant is located in the mountain about halfway between the upper and lower basins.

Wehratalsperre.

The Wehra drains from the reservoir via an inlet structure through a tunnel in the slope to the east of the barrier structure . Initially, the hydropower was not used to generate electricity . Between 1998 and 2000 an additional small hydropower plant with an Ossberger turbine was installed. This has a maximum output of 1,135 MW. The height of fall varies between 16 and 36 meters depending on the water level in the reservoir. The average height of fall is 29 meters.

The barrier structure of the Wehratalsperre is a dam made of loose stone material with an asphalt concrete exterior seal. It was built from 1971 to 1974 and commissioned in 1975. A second tunnel west of the dam serves to relieve the flood .

There is a pre-lock at the dam root .

Wehratalsperre as a breeding ground for the rock tern

The rock tern has been breeding at the Wehra inlet structure in the Wehra dam since 2016 .

See also

• List of dams in Germany

Web links

Commons : Wehratalsperre  - collection of pictures, videos and audio files

Individual evidence

1. ↑ Technical data  ( 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. on the operator's website (PDF document, accessed on September 13, 2011)  
2. ↑ Site plan  ( 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. on the operator's website (PDF document, accessed on September 13, 2011)  
3. ↑ Bettina Maier: Population development of the rock tern Ptyonoprogne rupestris in southern Baden-Württemberg (Germany) in 2017 . The Bird World 138: 123–140.

literature

• Peter Franke, Wolfgang Frey: Dams in the Federal Republic of Germany . DNK - DVWK 1987, ISBN 3-926520-00-0 .