Zwenkau harbour, Germany

References | hydraulic engineering

dams, weirs
and hydropower

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harbour
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locks and water-
ways engineering

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river engineering
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Flood control reservoir Dietenbach near the city of Umkirch / Germany

Flood control reservoir DESCPRIPTION OF PROJECT The flood control reservoir Dietenbach protects the municipalities of Umkirch and Gottenheim against flood events. Because of the deficient flood protection level of downstream riparian areas, covering only flood events < Q₅₀, a safety adjustment has become necessary. In a first phase, a safety report was prepared and a detailed safety assessment was realised. Within the scope of a study of variants, different scenarios for the rehabilitation of the reservoir were investigated. During these investigations, the Consultant had to ensure the hydraulic and geotechnical upgrade of the reservoir and had to keep in mind the plans of the German Railways Company to lead the new line of the Rhine Valley Line in a way that challenges the existing design for the flood discharge. The study of variants showed that a modified approach consisting in the construction of a new structure assuring both, operating discharge and flood evacuation, is preferable. PROJECT COMPONENTS AND TECHNICAL DATA Catchment area : 28.4 km² Dimensioned for a centennial flood Q₁₀₀ = 25 m³/s Design flow at Q1 = 34 m³/s (Q₅₀₀) Design flow at Q2 = 67 m³/s (Q₅₀₀₀) Flood control reservoir ~ 420,000 m³ Height of flood defence structure: 7.55 m Type of flood defence structure: earth dam The area around the reservoir is covered by trees		BRIEF DESCRIPTION Rehabilitation planning for the flood control reservoir Dietenbach CLIENT Entwässerungsverband Moos FINANCING Entwässerungsverband Moos SCOPE OF SERVICES Safety report and detailed safety assessment in accordance with DIN standard 19700 Rehabilitation planning Hydraulic modelling Geotechnical investigation Surveying 112