Emschergenossenschaft, the largest water management association in Germany, is responsible for the Emscher river basin (865 km²). Its restoration is a project of enormous proportions that will extend across generations, with a total investment of € 4.5 billion. Pöyry has supported this extraordinary undertaking since 2006. BACKGROUND The Emscher, a tributary of the Rhine, was straightened between 1906-1914 in the course of the industrializa

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