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Calculate the Cumulative Rainfall (P), Stormwater Runoff (Q) and Runoff Volume For an SCS Design Storm: *Referencing TR-55, this calculation is to be used for calculating the cumulative rainfall, cumulative stormwater runoff (Q) and runoff volume for SCS design storms. Includes all SCS Type I, IA, II, and III storms, FDOT storms, SJRWMD 96 hour storm and SFWMD 72 hour storm.   Calculation: Designer/Checker:     Input:           Metric Units   Select the SCS Synthetic Design Storm: ?? Type I - 24hr Type I - 18hr Type I - 12hr Type I - 6hr Type IA - 24hr Type IA - 18hr Type IA - 12hr Type IA - 6hr Type II - 96hr SJRWMD Florida Type II - 24hr Type II - 24hr Florida Modified Type II - 18hr Type II - 12hr Type II - 6hr Type III - 24hr Type III - 18hr Type III - 12hr Type III - 6hr 72hr SFWMD Florida FDOT - 10day FDOT - 7day FDOT - 3day FDOT - 24hr FDOT - 8hr FDOT - 4hr FDOT - 2hr FDOT - 1hr Rainfall (P - in or mm) Enter SCS curve number (CN) for the drainage area Drainage area (Am - sq mi or sq km)         Output:   Login to enable the Formulas! Not a Member? Join Now!   Start Using The Calculations >>> Become A Member Now!

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