World Rainfall Pattern Painter

Generate and visualize synthetic design rainfall patterns for stormwater modeling. Create EPA SWMM, HEC-HMS and InfoWorks ICM ready timeseries from 564 international storm patterns with custom depth, duration and time step.

• 564 design storm patterns (SCS/NRCS, Chicago, Huff, NOAA Atlas 14, FEH, ARR, DWA-A 118 and more)
• IDF and DDF lookups for 190+ countries and thousands of cities
• 9 export formats including SWMM5 .inp, HEC-HMS, InfoWorks ICM, CSV and PDF reports
• Real data hub for importing, editing and matching observed rainfall events

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