// HydroCAD IDF file // Copyright (c) 2008 HydroCAD Software Solutions LLC // The following name should match the file name, with the // comment used for any additional information. name=FL-DOT Zone 2 comment=Florida DOT Hydrology Handbook, January 2004 // Set parameter units depthunits=inches timeunits=hours duratunits=minutes // Set allowed duration range duration=8 180 // Now define coefficients for each event: // Coef3= a b c d 2 3 // Intensity is given by: I = a + bx + cx + dx // where: x = ln( duration ) event=2-Year coef3= 10.57745 -2.10106 -0.08181 0.02557 event=3-Year coef3= 10.89437 -1.83103 -0.19244 0.03537 event=5-Year coef3= 10.85901 -1.50267 -0.27902 0.04121 event=10-Year coef3= 12.30743 -1.94991 -0.22855 0.03903 event=25-Year coef3= 12.81040 -1.40033 -0.43207 0.05602 event=50-Year coef3= 14.17099 -1.56750 -0.47317 0.06168