In most cases, urban drainage systems have been designed as static, inflexible systems with a long service period. The results of the „SaMuWa“ project enable municipalities and wastewater companies to shift from static planning of drainage systems towards adaptive management of the urban hydrological system. Within the project, options for planning and operation have been investigated, which allow to make optimum use of the existing infrastructure under uncertainty and under changing conditions (climate, demographic and structural developments). In order to extend the space of available acting options, planning tools have been developed which combine urban and spatial planning with water management. Within SaMuWa, ifak has developed a methodology and an easy-to-use simulator which allow to estimate the control potential of urban drainage systems. These have been applied to two case studies. The methodology considers the interactions between sewer system and wastewater treatment. Some project results have found their way into document soon to be published by the German Water Association (DWA).
