Pöppelsche flood retention basin
| Pöppelsche flood retention basin | |||||||||
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| Coordinates | 51 ° 34 '59 " N , 8 ° 23' 9" E | ||||||||
| Data on the structure | |||||||||
| Lock type: | Earthfill dam | ||||||||
| Construction time: | 1975-1977 | ||||||||
| Height above valley floor: | 17.5 m | ||||||||
| Height of the structure crown: | 159.5 m above sea level NN | ||||||||
| Building volume: | 125,000 m³ | ||||||||
| Crown length: | 200 m | ||||||||
| Crown width: | 5 m | ||||||||
| Slope slope on the air side : | 1: 2 - 1: 3 | ||||||||
| Slope slope on the water side : | 1: 3 | ||||||||
| Operator: | Upper Lippe Water Association (WOL) | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 157 m above sea level NN | ||||||||
| Water surface | 20.8 ha | ||||||||
| Storage space | 1.3 million m³ | ||||||||
| Total storage space : | 1.59 million m³ | ||||||||
| Catchment area | 42.2 km² | ||||||||
| Design flood : | 115.2 m³ / s | ||||||||
The Pöppelsche flood retention basin is a flood retention basin (HRB) of the Upper Lippe water association near Westereiden in the Soest district , North Rhine-Westphalia . The Pöppelsche belongs together with the Gieseler to the catchment area of the Lippe and Rhine .
Geographical location
The flood retention basin is located in the nature reserve SO-006 Pöppelsche valley system with Hoinkhauser Bach. The dam is about 1 km northwest of the village of Westereiden ( Rüthen ) and northeast of the village of Berge ( Anröchte ). The next larger city in the vicinity is Erwitte and is located approx. 3.5 km northwest.
history
The Pöppelsche led after heavy rains frequently strong flood , such as on 25 November 1890 at St. Catherine's flood and between 15 and 17 July 1965 at the Heinrich flood . As a result, the Gieseler regularly overflowed its banks west of Bökenförde and near Hellinghausen and caused floods. For this reason, the Pöppelsche flood retention basin was built between 1975 and 1977.
Dam with outlet structure
The dam , whose crown height is 159.5 m above sea level. NN is located at its crown about 200 m long, 5 m wide and 17.5 m high above the valley floor. It consists of a bed of rock with a clay core skirting seal, has a structure volume of around 125,000 m³ and its slope slope is 1: 2 to 1: 3 on the air side and 1: 3 on the water side .
A bottom outlet and flood relief were integrated into the dam .
The bottom outlet consists of an inlet structure with a rake , a baffle with a tunnel and a control unit. The intake structure with rake has a width of 2.5 m and a height of 2.75 m. The tunnel after the diving wall has a cross-section of 6.20 m². The control element consists of a cone jet valve with a nominal width of DN 1000 and a bypass with a nominal width of DN 400. The bottom outlet has a maximum permissible output of 10.00 m³ / s and a maximum output of 12.00 m³ / s.
The flood relief consists of an inlet funnel with a rounded overflow edge and a downpipe. The overflow edge has a diameter of 10 m and the downpipe has a diameter of 4 m. The overflow edge is at a height of 157 m above sea level. NN . The performance of the flood relief is at the highest storage target of 158.5 m above sea level. NN 109 m³ / s and a maximum of 115.00 m³ / s.
The bottom outlet and the flood relief lead into an outlet tunnel with a cross-section of 12.2 m², which ends in a stilling basin with a jet ripper. The further drainage is realized via a channel into the valley floor.
To the east of the dam, a little above the Krone, there is an operating building with control and control devices.
Flood retention basin
The dam has 1.59 million m³ m³ total and flood control room, in a normal memory space of 1.3 million. The design flood is 115.2 m³ / s. The storage space is designed for a rainfall or catchment area of around 42.2 km² . The target is at 157 m above sea level. NN and the highest storage target, which is assumed to have a 1000-year flood, at 158.5 m above sea level. NN . The storage area is 20.8 ha for the target and 25.4 ha for the highest target.
Picture gallery
Dam and overflow funnel
Outlet structure of the dam
Waterside of the dam
See also
Individual evidence
- ↑ a b c d e f g h i j k l m n Wasserverband Obere Lippe: HRB Pöppelsche (accessed on June 17, 2012)
- ↑ Hubert Schulte Beerbühl: Eikeloh. Ein Dorf am Hellweg 836–1986 , self-published, Münster 1985, p. 194.
- ↑ Wolfgang Marcus: Water problems between Bad Westernkotten, Bökenförde and Lippstadt: Weihe, Bökenförder Dorfgraben and Breiter Graben. In: Reinhard Laumanns (Ed.): Heimatblätter Lippstadt, Lippstadt 1990, ISBN 3-921984-13-0 , p. 114ff