ICUD 2014

13th IAHR/IWA International Conference on Urban Drainage 2014

Importance Of Urban Development Scenarios For Urban Water Infrastructure Plannning And Management

Christian Mikovits, Wolfgang Rauch, Manfred Kleidorfer


Sealing of surfaces and land use change induced by population change together with aging infrastructure puts pressure on urban water networks. Changes in areas changes also the riskregarding flooding at places which have not been endangered before. For an anticipatory planning and adaptation of the existing water infrastructure to a dynamic and evolving system like a city a comprehensive urban development scenario analysis is essential. Results show that an analysis of different scenarios is absolutely necessary as the future risk for problems with the network can only be conjectured if using a traditional one scenario analysis. Hence it is crucial to simulate a variety of scenarios to cover as many future outcomes of city development as possible for a systematic and rigorous inquiry for problematic situations in the future. This work presents an urban development model designed especially for simplistic simulation of multiple predefined population and spatial scenarios and allowing for an integration with successive urban water network models.

How Relevant Is Climate Change For Sewer System Design? A Projection Based On A Review Of 30 Years

Thomas Einfalt, Manfred Kleidorfer, Christian Mikovits, Wolfgang Rauch


Climate change is a fact. Its implication on urban hydrology is regionally variable, and climate models frequently give diverging projections for the end of the century. Therefore, adaptation of flow systems to potential climate change effects is required but not clearly defined. Apart from climate change, there are other drivers for the modification of urban drainage systems, primarily urban development (e.g. due to population growth) and new legislation. This paper is trying to provide a look ahead into the coming decades in analysing the changes which have occurred in the last 30 years of urban drainage history, and in collecting the opinion of international professionals. With this background, the weights of different drivers for change of sewer system design will be discussed and set into a relation. The conclusion shows that it is important to consider also other drivers than only climate change when projecting for the situation in three decades from now.

Moving Urban Water Management Modelling Towards Web-service Based Technologies

Michael Mair, Christian Mikovits, Markus Sengthaler, Martin Schöpf, Heiko Kinzel, Christian Urich, Manfred Kleidorfer, Robert Sitzenfrei, Wolfgang Rauch


Research in urban water management experienced a transition from traditional model applications to modelling water cycles as integrated part of urban areas. This includes the interlinking of models of many research areas (e.g. urban development, socio economy, urban water management). The integration and simulation is realized in newly developed frameworks (e.g. DynaMind and OpenMI) and often assumes a high knowledge in programming. This work presents a web based urban water management modelling platform which simplifies the setup and usage of complex integrated models. The platform is demonstrated with a small application example on a case study within the Alpine region. The used model is a DynaMind model benchmarking the impact of newly connected catchments on the flooding behaviour of an existing combined sewer system. As result the workflow of the user within a web browser is demonstrated and benchmark results are shown. The presented platform hides implementation specific aspects behind web services based technologies such that the user can focus on his main aim which is urban water management modelling and benchmarking. Moreover, this platform offers a centralized data management, automatic software updates and access to high performance computers accessible with desktop computers and mobile devices.