Moreover you can simulate the urban flooding and can view it, may be in Animator.I found the above four in papers, I get confused, 1 are they all models or software whats their relationship with ArcGIS 2 Which is most suitable for urban flooding modelling and what should I consider when choosing a model Flood Modelling ESRI ArcGIS SWMM Flood Forecasting Share Facebook Twitter LinkedIn Reddit Most recent answer 11th Mar, 2017 Amjad Albayati University of Baghdad i agree with Rafael Anleu Cite Popular Answers (1) 3rd Dec, 2015 Rafael Anleu I would differ from the afirmation stating that a software with a set of Data is called Model.
A model is a representation of reality more or less simplified and for your case it is the representation of the processes that leed to floods and its end result, namely the flood extension, depth and any other physical parameter describing the flood wich will always be a simplified representation of reality. Based on these, MIKE URBAN,SWMM, HEC-HMS or TUFLOW are software wich have a collection of models, that allow you to simulate the real thing. A unique matemathical model covering all the processes leading to the ocurrence of floods does not exist. Pcswmm Software Series Of SubTo put it in some other terms, you have a series of sub-models. For example one sub-model for rainfall wich can be something very simple as assuming uniform rainfall throught out your catchment, but it is still a modell and one sub-model to determine the ammount of runoff produced, again it can be very simple or very complex and so on. For any single process there are different models available. ![]() ![]() Finally you end up with a model ensemble (although some people may differ with this term); that is a collection of sub-models chained to each other wich describe your system. For your purposes it is common to separate flood modelling into two parts, the hydrology and the hydraulics. Simply stated the hydrology gives you the ammount of water (runoff) and the hydraulics how it flows in your system. Following these, there is a relatively large number of softwares dealing with hydrology and hydraulics separetely and less that deal with both. Now what does each one of these models do SWMM -- Hydrology and 1D hydraulics. MIKE URBAN -- Hydrology and 1D2D hydraulics (1D for pipes wich is enough and 2D for overland) HEC-HMS -- Just hydrology. You can use its output to feed a hydraulic model like TUFLOW. TUFLOW -- Just 1D2D hydraulics (1D for pipes and 2D for overland) In very general terms urban flood assesment tends to concentrate more on the hydraulics, because it is the most complex part; you have the streets and the drainage system to model and its interaction. ![]() What to choose In terms of modelling possibilities I would say either URBAN MIKE or coupling HEC-HMS and TUFLOW. My judgement has only to do with the possibilities to do 2D hydraulic modelling for overland flow wich is of outmost importance for floods. In terms of costs, then SWMM is the best alternative and it is also quite simple to learn and manipulate. How they may interact with ArcGIS URBAN MIKE, HEC-HMS and TUFLOW they can all communicate well with ArcGIS. For all of them you use ArcGIS to prepare data and to present results. Cite 6 Recommendations All Answers (5) 20th Mar, 2014 Deepak Singh Bisht National Institute of Hydrology Hey Chen, Technically, a software with a set of Data is called Model. Now as you are asking for urban flooding model, you must know that MIKE Urban is a NOT FREE model, infact its a costly one but is very capable for Urban flooding studies. It comprises of SWMM and MIKE Flood and needless to say can work in a GIS platform i.e. Shape files, DEM can be imported to MIKE Urban.
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