Borchen flood retention basin
| Borchen flood retention basin | |||||||||
|---|---|---|---|---|---|---|---|---|---|
.jpg) |
|||||||||
|
|||||||||
|
|||||||||
| Coordinates | 51 ° 39 ′ 54 " N , 8 ° 45 ′ 20" E | ||||||||
| Data on the structure | |||||||||
| Lock type: | Earthfill dam | ||||||||
| Construction time: | 1978-1980 | ||||||||
| Height above valley floor: | 16.5 m | ||||||||
| Height above foundation level : | 20 m | ||||||||
| Height above the river bed : | 20.2 | ||||||||
| Height of the structure crown: | 167.5 m above sea level NN | ||||||||
| Building volume: | 125,000 m³ | ||||||||
| Crown length: | approx. 200 m | ||||||||
| Crown width: | approx. 5 m | ||||||||
| Slope slope on the air side : | 1: 2.5 - 1: 3 | ||||||||
| Slope slope on the water side : | 1: 3 | ||||||||
| Operator: | Upper Lippe Water Association (WOL) | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 164.7 m above sea level NN | ||||||||
| Water surface | 31.4 ha | ||||||||
| Storage space | 1.94 million m³ | ||||||||
| Total storage space : | 2.64 million m³ | ||||||||
| Catchment area | 87 km² | ||||||||
| Design flood : | 121.8 m³ / s | ||||||||
The flood retention basin Borchen is a flood retention basin (HRB) of the water association Obere Lippe (WOL) at Ellerbach near Borchen in the North Rhine-Westphalian district of Paderborn and belongs to the catchment area of the Lippe .
As a "green pool", usually located where no water, it serves the flood protection of towns situated below the pelvis (as Borchen), and it protects the river basin of the lip before flood .
Geographical location
The flood retention basin is located on the Paderborn plateau on the Ellerbach. It is located west of Hamborn Castle and east of the Borchen district of Kirchborchen . His dam is about 2 km east-northeast of the Kirchborchen town center; Somewhat south-southwest of the dam is Dahlberghof, north of Kreisstraße 2 .
history
Because the Ellerbach, which is mostly dry above, in and below the flood retention basin (its water seeps into the ground further upriver), often caused strong floods , such as at the end of May 1931 and during the Heinrich flood in July 1965, and large parts of the villages downstream flooded, was built on its lower reaches above Borchens a detention basin, the excess Ellerbachwasser picks: the dam began in 1978 and ended in 1980. the commissioning took place after completion of sample storage 1,981th
Dam with outlet structure
The dam , whose crown height is 167.5 m above sea level. NN is, is at its crown about 200 m long, 16.5 m (above the valley floor) or 20 m (above the foundation floor ) high and 5 m wide. It consists of a bed of rock with a clay core, has a structure volume of around 125,000 m³ and its slope slope is 1: 2.5 to 1: 3 on the air side and 1: 3 on the water side .
An approximately 110 m long outlet structure made of reinforced concrete with a diameter of 1.6 m and a flood relief system was integrated into the dam , which can let through up to 101.0 m³ / s; the output at the bottom outlet is 15.4 m³ / s.
Flood retention basin
The dam has 2.64 million cubic meters total and flood control room m³, in a normal memory space of 1.94 million. The design flood is 121.8 m³ / s. The storage space is designed for a precipitation or catchment area of around 87 km² . The target is 164.7 m above sea level. NN and the highest storage target (a flood that occurs on average once every 1000 years) at 166.2 m above sea level. NN . The flooded area is 31.4 ha for the storage target and 36.2 ha for the highest storage target.
Work on rivers and infrastructure
During the construction of the dam, the section of the Ellerbach in the dam area was designed as an underground canal leading through the dam. In addition, small access roads to the dam and operations building and a few walking, hiking and control trails, one of which also leads over the dam, were created.
See also
Individual evidence
- ↑ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae HRB Borchen at Wasserverband Obere Lippe (WOL)
- ↑ a b List of dams in NRW (PDF; 124 kB)
Web links
- Dams directory NRW (PDF; 122 kB)
- Dams in North Rhine-Westphalia; State Environment Agency NRW (PDF; 124 kB)