Hochwasserrückhaltebecken Hölltal, Flood detention basin in Giengen an der Brenz, Germany.
The Hölltal detention basin controls water flow through a 4.5-kilometer valley section, with a storage capacity of 110,000 cubic meters of water.
This flood control structure was constructed in 1958 to protect residential areas west of Schießberg and south of Läutenberg within the Giengen municipality.
The name derives from the German word 'Hölle', referring to the deep gorge formation where the structure stands near the Höllbach stream.
The facility manages stormwater from a catchment area of 16.8 square kilometers on the karstic Weißjurahochfläche plateau of the Swabian Jura.
The basin operates on an intermittent stream that flows permanently only in its upper course, becoming discontinuous before entering the first valley gorge.
GPS coordinates: 48.63278,10.25000
Latest update: March 7, 2025 20:08
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