Abstract
The feasibility of a theoretical description of the urban water cycle by means of physically based models has been presented. A high-resolution three-dimensional finite-difference storm model was used to simulate convective rainfall over an urban catchment near Paris. A hydrological model described the surface processes as well as the discharge processes in the sewer system. The comparison of model results with the observational data indicated that the rainfall simulation (space-time distribution and quantity) was the most critical part of the simulations. Subsequently, the coupled system simulated well the overall discharge distribution and the dynamic response of the discharge at the principal outlets of the sewer system. Results indicated that a purely mechanical description of the water cycle is feasible and that this could be a useful tool for investigation of the urban environment in the future.
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