Abstract for: Potential Diffusion Trajectories of Low Impact Development (LID) solutions for Urban Storm Water Management in Built-Up Areas

The presented application utilizes a system dynamics model for exploring potential diffusion trajectories of Low Impact Development (LID) solutions to manage urban stormwater in built-up areas. The case of Grefsen-Kjelsås in the city of Oslo, Norway is used. The application is a part of Work Package 3: Integrated Assessment of Urban Water Management of the New Water Ways project. The system dynamics model is designed to represent/formalize “social” aspect of the issue (adoption, human behavior), to integrate hydrological and “social” sub-systems, to integrate the results of reverse auctions studies conducted within the NWW project, to explore possibilities of utilizing intrinsic value that the residents of a built-up area might place on LIDs and potential “co-joint” effects of policies. The model is built to be flexible enough to simulate a variety of assumptions behind the adoption potential and simple in representation to be explained to various stakeholders. The simulation results provide the insights on the relative importance of two incentive policies - subsidies and storm water fee - particularly in the short and long term horizons.