Husen-Dalheim flood retention basin
| Husen-Dalheim flood retention basin | |||||||||
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| Coordinates | 51 ° 34 '56 " N , 8 ° 50' 54" E | ||||||||
| Data on the structure | |||||||||
| Construction time: | 1982-1984 | ||||||||
| Height above valley floor: | 24.00 m | ||||||||
| Height above foundation level : | 27.00 m | ||||||||
| Height of the structure crown: | 248.91 m above sea level NN | ||||||||
| Crown length: | approx. 420 m | ||||||||
| Crown width: | 12.5 m | ||||||||
| Slope slope on the air side : | 1: 2; 1: 2.5; 1: 3 | ||||||||
| Slope slope on the water side : | 1: 1.5; 1: 2; 1: 2.5; 1: 3 | ||||||||
| Operator: | Upper Lippe Water Association (WOL) | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 245.5 m above sea level NN | ||||||||
| Water surface | 46.5 ha | ||||||||
| Storage space | 3.55 million m³ | ||||||||
| Total storage space : | 4.155 million m³ | ||||||||
| Catchment area | 55 km² | ||||||||
| Design flood : | 111.9 m³ / s | ||||||||
The flood retention basin Husen-Dalheim is a flood retention basin (HRB) of the water association Obere Lippe (WOL) on the Altenau between Husen and Dalheim in the North Rhine-Westphalian district of Paderborn and belongs to the catchment area of the Lippe and Rhine .
The dam with part of permanent traffic jams usually serves the flood protection of towns situated below the pelvis - as Husen.
Geographical location
The flood retention basin is located in the Teutoburg Forest / Eggegebirge Nature Park on the Paderborn plateau at the confluence of the Piepenbach and Altenau. It is located between the Lichtenau districts of Husen and Dalheim ; Parts of it are in the 19.47 km² nature reserve Marschallshagen and Nonnenholz with the upper Altenautal (NSG no. 318767), which has existed since 2002 . His dam is about 675 m southeast of the southeastern exit of the village ( Lichtenauer Straße ) of Husen, at the southern end of the state road 754, which meets the L 817 (in the Dalheim – Lichtenau section) directly northeast of the dam.
history
Because the Altenau 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 created on its upper course between Dalheim and Husen below built to absorb excess Altenau water: The construction of the dam began in 1982 and ended in 1984. Commissioning took place in 1986.
In addition to the HRB Husen-Dalheim, the HRB Sudheim and the HRB Ebbinghausen were built on the Altenau tributary of the Sauer .
Dam with outlet structure
The dam , whose crown height rises to 248.91 m above sea level. NN is located at its crown about 420 m long and 24.0 m (above the valley floor) or 27.00 m (above the foundation floor ) high and 12.5 m wide. It consists of a bed of rock with a clay core (structured dam with a seal made of cohesive clay), has around 336,000 m³ structure volume and its slope slope is 1: 2 to 1: 3 on the air side and 1: 1.5 to 1: 3 on the water side .
An approximately 115 m long outlet structure made of reinforced concrete with a diameter of 1.2 m and a flood relief system was integrated into the dam , which can let through up to 112 m³ / s; the output at the bottom outlet is 12 m³ / s. An operating building with monitoring and control devices was erected to the north-west below the dam.
Flood retention basin
The dam has 4,155,000 m³ congestion and flood control room m³, in a normal memory space of 3.55 million. The design flood is 111.9 m³ / s. The storage space is designed for an approximately 55 km² large precipitation or catchment area . The target is 245.5 m above sea level. NN and the highest storage target (a flood that occurs on average once every 1000 years) at 246.7 m above sea level. NN . The flooded area comprises 46.5 hectares at the destination of the dam. The basin is operated in partial permanent accumulation, so normally forms a 4.27 hectare reservoir; the water surface is then a little more than 230 m above sea level. NN .
The main reservoir has a pre- dam ( ⊙ ), which is also operated in a partially permanent way , the northern secondary dam of which, like the main basin, serves as a road embankment for the L 817 and the maximum 6.8 m high main dam as such serves the district road 69, which branches off from this road towards Blankenrode . The foothills are fed by the Altenau and by the Holtheimer Bach (also called Holtheimer Wasser ) flowing from the northeast . The Annenkapelle in Husen is located on the L 817 on the northern edge of the pool .
Because of the partial duration jams both pelvis, thus conditional retention of sediments are offered below the main basin problems with the water supply from Altenau ( see the article "Altenau (Alme)" section water management ).
Work on rivers and infrastructure
During the construction of the dam, the section of the Altenau watercourse in the dam area was designed as a canal leading underground through the dam. In addition, a small access road to the dam and the operations building and a few walking, hiking and control trails, one of which also leads over the north flank of the dam, were created and a section of the L 817 was led over the dam.
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 Husen-Dalheim ( Memento of the original from January 4, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. at the Upper Lippe Water Association (WOL)
- ↑ a b c List of dams in NRW (PDF; 124 kB)
- ↑ Map services of the Federal Agency for Nature Conservation ( information )
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