You can find the install for the Design Storm Wizard on this openswmm thread https://www.openswmm.org/Topic/32275/dstorm-a-design-storm-wizard. A very adaptable rainfall tool for SWMM5, that generates rainfall distributions based on user IDF, NOAA Atlas 14 IDF for Chicago, nested or composite choices. If IDF is not used, the user can save triangular, SCS, NRCS Regional, Huff, or custom distributions to an SWMM5 file. The SWMM5 data can be imported into an InfoWorks or SWMM ICM network as a Rainfall event. This is how the DSTORM program works in conjunction with ICM.

Once imported, ALL of the time series are different rainfall columns in the rainfall event. We see Chicago, IDF, Huff, and NOAA. The rainfall event can be used in ICM SWMM or ICM InfoWorks Networks. Our goal is to generate the rainfall distribution in DSTORM, copy it, paste it to SWMM5 and then import the rain gages later to ICM. Inside SWMM5, create a new Time Series and paste the generated rainfall distribution from the clipboard. Next, assign the time series to an SWMM5 Rain Gage.

DSTORM can export SI or USA units to the SWMM5 file.

IDF Curves from NOAS Atlas 14 or User-Defined IDF Table.

Our goal is to generate the rainfall distribution in DSTORM, copy it, paste it to SWMM5 and then import the rain gages later to ICM. Inside SWMM5, create a new Time Series and paste the generated rainfall distribution from the clipboard. Next, assign the time series to an SWMM5 Rain Gage.

Once imported, ALL of the time series are different rainfall columns in the rainfall event. We see Chicago, IDF, Huff, and NOAA. The rainfall event can be used in ICM SWMM or ICM InfoWorks Networks.