Lech stage 6 - Dornau

Lech stage 6 - Dornau
Dam and power plant
Location: Weilheim-Schongau district Tributaries: Lech Larger places nearby: Schongau
Bavaria , Germany
Coordinates	47 ° 47 '52 "  N , 10 ° 53' 53"  E Coordinates: 47 ° 47 '52 "  N , 10 ° 53' 53"  E
Data on the structure
Construction time:	1958-1960
Height above valley floor:	25 m
Height above foundation level :	30.5 m
Height of the structure crown:	698.50 m
Building volume:	300,000 m³
Crown length:	423 m
Crown width:	7 m
Slope slope on the air side :	1: 2.00
Slope slope on the water side :	1: 2.00 - 1: 3.00
Power plant output:	22.2 MW
Data on the reservoir
Altitude (at congestion destination )	694.00 m
Water surface	204 ha
Storage space	20.4 million m³
Total storage space :	24 million m³
Catchment area	1880 km²
Design flood :	1352 m³ / s

The Dornautalsperre (also: Dam Dornau, Dornauer dam or Lech barrage 6 ) is Schongau in Weilheim-Schongau in Bavaria at Lech and belonged to the Bayernwerk (Bavarian hydropower plants), today Uniper Kraftwerke GmbH . The reservoir is crossed by federal highways 17 and 472 on the Lechtal bridge Schongau .

purpose

Reservoir seen from the northern high bank of the Lech

"Lido" restaurant and outdoor pool on the north bank of the northern part of the reservoir

Reservoir (southern part) with Lechtal bridge

The dam , which was built from 1958 to 1960, is used to generate electricity from hydropower, flood protection , low water elevation and local recreation. Of the total storage space (24 million m³) there are 3.6 million flood protection rooms , 6.1 million operating rooms, 12.3 million reserve rooms and 2 million dead spaces.

The expansion capacity of the hydropower plant is 22.2 MW. An average of 101.2 GWh of electricity is generated each year.

dam

The dam is a gravel embankment with a clay core seal. It was built in less than a year in 1959. That same year, the dam was no sample storage dammed up to the water level. With all the preparatory work and ancillary facilities, the construction period extended from 1958 to 1960. The Dornau Dam is also known as the bottleneck because it is only a little wider than the Lech.

Flood relief

The dam has several options for flood relief . There is a siphon system with a capacity of 287 m³ / s, depth drains with 495 m³ / s (together 782 m³ / s), bottom drains with 450 m³ / s and the turbines , through which a maximum of 120 m³ / s can be delivered. This is a total of 1352 m³ / s.

See also

• List of dams in Germany

literature

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

Web links

Commons : Lechstaustufe 6  - collection of pictures, videos and audio files