The assessment of the overflow and flooding behaviour of the Dresden sewer system is based on model results from ITWH with numerous boundary conditions. For the precipitation a defined block rain (“land rain” with an annuality of 20 a, 12 h duration and approx. 68 mm intensity) was used. Assuming the foreclosure of all channels along the Elbe at Elbe floods up to 6 m and the maximum flow rate of all pumping plants, the shown channel shafts with at least 5 m³ volume and generate the overflow ranges.
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