Reichenbach flood retention basin (Hechingen)

Reichenbach flood retention basin
	Damm (north view), the storage area is on the left, Hohenzollern Castle in the background
Tributaries:	Reichenbach
Drain:	Reichenbach
	Baden-Wuerttemberg , Germany
Coordinates	48 ° 20 ′ 16 ″ N , 8 ° 59 ′ 19 ″ E Coordinates: 48 ° 20 ′ 16 ″ N , 8 ° 59 ′ 19 ″ E
	Data on the structure
Construction time:	2016-2019
Height of the barrier structure :	12.5 m
Height of the structure crown:	527 m
Building volume:	50,000 m³
Crown length:	292 m
Crown width:	5 m
Base width:	57 m
	Data on the reservoir
Water surface	7.6 ha
Storage space	235 700 m³

The Reichenbach flood retention basin was built between 2016 and 2019 on the boundary of the two Hechingen districts of Boll and Stetten in Zollernalbkreis , Baden-Württemberg .

construction

The flood retention basin is intended to improve flood protection in the Reichenbach area and further down the Starzel , which in turn is a tributary of the Neckar . The Zellerbach already flows into the Reichenbach in the reservoir area above the dam . The basin is usually dry and is only filled when there is high water, its discharge is controlled. It is designed for a storage volume of 235,700 m³; the storage area then reaches 7.6 hectares. The client is the Starzeltal flood protection association and the operator is the city of Hechingen.

The dam is straight and has a height of 12.5 m above the river bed. The dam is built continuously for fish. When the water level is normal, these can swim through a passage, the so-called eco - tunnel .

history

After the Starzel flood in 2008 , the Starzeltal Flood Protection Association was founded. In addition to a few smaller ones, such as the Zellerbach retention basin , the Reichenbach flood retention basin is the largest project; it was put into operation on July 3, 2019 as part of a ceremony. The construction costs amounted to 4.83 million euros, of which the state of Baden-Württemberg paid 3.2 million.