Affoltern am Albis Flood Protection Scheme Switzerland Project Description The Jonenbach river in the residential area of Affoltern am Albis was flooded several times in the past, causing damage of some million Swiss Francs, due to its insufficient carrying capacity. The flood control reservoir on the Jonenbach river reduces the maximum outflow on the lower river to 17 m 3 /s, a discharge which can be passed by the e

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