Perf reservoir
| Perfstausee flood retention basin Breidenstein |
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| Coordinates | 50 ° 54 '27 " N , 8 ° 27' 25" E | ||||||||||
| Data on the structure | |||||||||||
| Construction time: | 1984-1993 | ||||||||||
| Height of the barrier structure : | > 10 m | ||||||||||
| Height above valley floor: | 12 m | ||||||||||
| Height above foundation level : | 12.8 m | ||||||||||
| Crown length: | 500 | ||||||||||
| Crown width: | 5 m | ||||||||||
| Base width: | 85 m | ||||||||||
| Data on the reservoir | |||||||||||
| Altitude (at congestion destination ) | 301 m above sea level NHN | ||||||||||
| Water surface | Permanent traffic jam: approx. 13 (0.13 km²) Full traffic jam (max.) : Approx. 18 ha (0.18 km²) |
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| Reservoir length | 1400 m | ||||||||||
| Reservoir width | 25-225 m | ||||||||||
| Storage space | 0.6 million m³ | ||||||||||
| Catchment area | 112.5 km² | ||||||||||
The Perfstausee , also called the Breidenstein flood retention basin , between Breidenbach and Breidenstein is a flood retention basin in the Hessian district of Marburg-Biedenkopf . The operator is the district committee or the water association "Upper Lahngebiet". The dam , consisting of a main and pre- dam , is mainly used for flood protection for Perf and Lahn and thus also relieves the Rhine .
The catchment area of the 18 hectare reservoir is 112.5 km².
Geographical location
The Perfstausee is located in the north of the Gladenbacher Bergland . It spreads between the core town of Breidenbach and the Biedenkopfer district of Breidenstein on the lower reaches of the Perf, a right-hand tributary of the Lahn. The pre-barrier upstream of the main barrier is located in the Im Wehr nature reserve near Breidenstein ( CDDA no. 163891; designated in 1990; 14.17 hectares in size).
Federal road 253 runs west past the reservoir in the section between Breidenbach and Breidenstein . From here, a little to the west of the inlet of the Perf in the Vorsperre, the district road 108 branches off , which leads west to the Breidenbacher district Wiesenbach . The route of the disused Schelden Valley Railway runs parallel to the B 108 .
Dam and hydropower
The dam was raised from 1984 to 1993 and put into operation in 1995. It is 5 m wide at its crown and 85 m wide at the bottom. The dam, which surrounds the northeast end of the reservoir in a semicircle, is about 500 m long.
A hydropower plant with a Kaplan turbine has been running on the Perfstausee since December 15, 2011 . It generates electricity for the Biedenkopfer public utilities.
Reservoir
The reservoir is fed by the Perf and its tributaries and normally has a storage volume of 600,000 m³ . In the event of a flood, the lake can cover a maximum area of around 18 ha; then its water level is 307.4 m above sea level. NHN , and the lake volume would then amount to 2.215 million m³. In permanent traffic it is around 13 hectares in size, and then its water level is 301 m above sea level. NHN - around 4 m above the bottom of the dam. Its average flow rate is around 1,700 liters / second. During floods, the reservoir can hold up to 2.035 million cubic meters. The water depth of the main dam then rises to up to 10.40 m. The pre-lock has water depths of up to 8 m.
Freetime activities
The main barrier of the Perf reservoir is approved for swimming and is monitored by the Deutsche Lebens-Rettungs-Gesellschaft ( DLRG ) during swimming ; the bathing area is 2.5 to 3.5 m deep. In 2015, the water quality of the lake was rated as “poor” by the European Environment Agency, so the lake was closed during this bathing season.
In addition to a restaurant, there is a mobile kiosk right on the shore during the summer months. The lake is integrated into the cycle path network of the Lahn-Dill-Bergland via the lake cycle path . The cycle path begins in Wallau at the railway stop of the Upper Lahn Valley Railway and leads over the Perfstausee to the Aartalsee .
See also
Individual evidence
- ↑ a b c d e f g h i j Hessian State Office for Nature Conservation, Environment and Geology: Gießen Regional Council. Environment department: Breidenstein flood retention basin. (PDF; 7.22 MB) hlnug.de, July 2014, p. 67 , accessed on November 8, 2016 .
- ↑ a b c d The Perfstausee - a diverse excursion destination ( memento from October 24, 2016 in the Internet Archive ), on marburg-biedenkopf-tourismus.de
- ↑ a b Length information using the Measure distance function on Google Maps
- ↑ Map services of the Federal Agency for Nature Conservation ( information )
- ↑ Biedenkopf relies on electricity from hydropower. op-marburg.de, accessed on December 31, 2015 .
Web links
- Breidenstein Perf reservoir. Hessian State Office for Environment and Geology, archived from the original on August 21, 2012 ; accessed on December 31, 2015 .
- Measuring point standing water s75a Perf reservoir, in front of the dam ( Memento from March 11, 2007 in the Internet Archive )