Dear researcher,
I would like to understand better which are the most suitable tools to carry out pluvial flood simulation.
In particular, the interest is focused on the ones able to implement dual drainage models (coupling 1D drainage network and 2D overland flow).
Multiple commercial software can satisfy these requirements, such as Infoworks ICM or Mike+, but what about freeware/open source?
Any comment, suggestion or shared documentation is really precious.
All the best
I don’t know if this might be helpful. I would search the available rain and stream gauge network available for your area of interest. You might stratify by physiographic area, years of data, elevation or topographic position, watershed size, etc. In most cases, the annual flood series is probably already in a spreadsheet, easy to order and plot the flood frequency for each station, evaluating skew, etc. The US Geological Survey and perhaps your water resource agency has already developed this flood frequency analysis, which could be used to extend forecasting to ungauged streams within the network. Equations for the flood of various frequencies may have been developed for ungauged drainages. In mountainous terrain, such as Italy, these equations may have limits due to the orographic effect on rainfall complexity, so if rainfall frequency data and maps are available, this may further help adjust flooding when applying the forecasting equations.
Consulting with the local water agency hydrologists or researchers would be would be best if they have specifically defloped or validated any models for your area of interest. Perhaps they might show examples of how well the model compares to some of the existing gauging station data.
Dear William F. Hansen thanks for your answer.
My question was more related to the numerical models available to carry out pluvial flood risk assessments, meaning software able to implement dual-drainage models.
Regards
PT
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