We've been asked by one of our clients to look at using FEH13 rainfall.
As far as I can see, FEH13 isn't directly supported by ICM. The output from the FEH web site is a table of rainfall depths for a range of durations.
The approach would therefore seem to be to take a FSR/FEH rainfall event of the required duration and scale it to match the total depth required.

Is there any easier way to do this? Could future versions of ICM support scaling to a specified rainfall total?