for my dissertation I am trying to design a drainage system using epa swmm and measure its resilience under both standard and future climate change conditions. Now the Swmm applications manual lists a number of return periods such as a 1 in 100 year storm and has a list of the time and precipitation in inches. I am trying to find a U.K equivalent of this data. However it is proving difficult. Is there anyway to calculate or find such values for rainfall return periods in the U.K.
(below is 1 in 100 year rainfall data for a 2 hour storm)
I have tried google but finding the exact information is difficult. Also couldn't find it on the Met Office website. I am trying to model runoff using EPA Swmm if that helps.
It seems that determining the appropriate rainfall data would be an integral part of your dissertation. This is a non-trivial issue. Even the choice of a 2-hour storm duration is significant.
That said, I would expect UK stormwater regulations to provide guidance on the applicable rainfall data. Otherwise try a more targeted Google search such as "uk temporal rainfall distribution" or "uk idf curves", which can be used to generate temporal rainfall distributions.
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RE: Rainfall Return Period
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Rainfall Return Period
RE: Rainfall Return Period
That said, I would expect UK stormwater regulations to provide guidance on the applicable rainfall data. Otherwise try a more targeted Google search such as "uk temporal rainfall distribution" or "uk idf curves", which can be used to generate temporal rainfall distributions.
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Rainfall Return Period
If that doesn't help, then try a local agency charged with storm drainage design.
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RE: Rainfall Return Period