Rainfall Distribution Calculator

Generate SCS/NRCS 24-hour rainfall distributions (Type I, IA, II, III) for design storms. Creates hyetographs showing rainfall intensity over time per TR-55 methodology.

Input Parameters

Storm Parameters

24-hour design storm characteristics

in

Design storm precipitation depth

SCS rainfall distribution pattern

Most of the continental United States. Characterized by high-intensity, short-duration storms.

Peak at 12 hours (50% of storm duration)

Output Settings

Time step and extraction options

hours

Output interval (0.1 = 6 minutes)

hours

Extract portion starting at this hour

hours

Extract portion ending at this hour

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