Ebbinghausen flood retention basin
| Ebbinghausen flood retention basin | |||||||||
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| Coordinates | 51 ° 36 '18 " N , 8 ° 49' 4" E | ||||||||
| Data on the structure | |||||||||
| Construction time: | 1974-1976 | ||||||||
| Height above valley floor: | 12.5 m | ||||||||
| Height above foundation level : | 17 m | ||||||||
| Height of the structure crown: | 205.85 m above sea level NN | ||||||||
| Crown length: | approx. 350 m | ||||||||
| Crown width: | 5 m | ||||||||
| Slope slope on the air side : | 1: 2 - 1: 4 | ||||||||
| Slope slope on the water side : | 1: 2 - 1: 4 | ||||||||
| Operator: | Upper Lippe Water Association (WOL) | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 204 m above sea level NN | ||||||||
| Water surface | 46.4 ha | ||||||||
| Storage space | 2.38 million m³ | ||||||||
| Total storage space : | 2.61 million m³ | ||||||||
| Catchment area | 110 km² | ||||||||
| Design flood : | 120 m³ / s | ||||||||
The flood retention basin Ebbinghausen is a flood retention basin (HRB) of the water association Obere Lippe (WOL) on the Sauer between Ebbinghausen and Atteln in the North Rhine-Westphalian district of Paderborn and belongs to the catchment area of the Lippe and Rhine .
As a “green basin”, in which there is normally no water, it serves to protect the villages below the basin from flooding - such as Atteln.
Geographical location
The flood retention basin is located in the Teutoburg Forest / Eggegebirge Nature Park on the Paderborn plateau on the Sauer. It is located below the Ebbinghausen district of Lichtenau and above the Atteln district. His dam is just under 2 km southwest of the southwest village exit ( Ortbergstrasse ) of Ebbinghausen. District road 1 (in the Ebbinghausen – Atteln section) leads past directly to the west .
history
Because the Sauer often leads to strong floods , such as between July 15 and 17, 1965 during the Heinrichsflut , and flooded large parts of the neighboring and downstream villages, a flood retention basin was built on its lower reaches below Ebbinghausen, which absorbs excess sour water The dam began in 1974 and ended in 1976. The commissioning took place after completion of sample storage 1980th
In addition to the HRB Ebbinghausen, the HRB Sudheim was built on the Saueroberlauf and the HRB Husen-Dalheim at its confluence with the Altenau .
Dam with outlet structure
The dam , whose crown height is 205.85 m above sea level. NN is, is at its crown about 350 m long and 12.5 m (above the valley floor) or 17.00 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 100,000 m³ and its slope slope is 1: 2 to 1: 4 on the air and water sides .
An approximately 66 m long outlet structure made of reinforced concrete with a diameter of 1.8 m and a flood relief system was integrated into the dam , which can let through up to 120 m³ / s; the output at the bottom outlet is 2 x 22.6 m³ / s. At the southeast end of the dam, which has a combination structure for all water withdrawals, an operating building with control and control devices was built.
Flood retention basin
The dam has 2.61 million cubic meters total and flood control room m³, in a normal memory space of 2.38 million. The design flood is 120 m³ / s. The storage space is designed for a precipitation or catchment area of around 110 km² . The target is exactly 204 m above sea level. NN and the highest storage target (a flood that occurs on average once in 1000 years) at 204.5 m above sea level. NN . The flooded area is 46.4 ha for the storage target and 18.0 ha for the highest storage target.
Work on rivers and infrastructure
During the construction of the dam, the section of the river Sauer located 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 af HRB Ebbinghausen at Wasserverband Obere Lippe (WOL)
- ↑ a b c List of dams in NRW (PDF; 124 kB)
Web links
- Dams in North Rhine-Westphalia; State Environment Agency NRW ( Memento from February 26, 2009 in the Internet Archive )
- Dams in the Detmold administrative district