// HydroCAD IDF file
// Copyright (c) 2007 HydroCAD Software Solutions LLC
// To create a custom IDF definition, copy this file and
// edit the content as required.  For details see IDF.txt

// The following name should match the file name, with the
// comment used for any additional information.

name=AA-Sample County
comment=Sample County, Any State IDF data

// The following lines set default units, and may be omitted
// unless other units are required.

depthunits=inches
timeunits=hours
duratunits=minutes

// The following line defines the duration steps for all events.
// When using graphical IDF data, these are usually the durations
// that are marked on the graph.

duration=5 10 20 30 1*60 2*60 5*60 10*60 24*60

// Now define each of the events.
// This sample file shows several different techniques.

// The following 2-Year event is defined with intensity values.
// The number of intensity values must match the number of
// duration values defined above.

event=2-Year
inten=7.1 5.6 4.2 3.2 1.9 1.1 .57 .33 .18

// The following 5-year event is 110% of the initial (2-year)
// intensity values.  Use this technique only for an event that
// is an exact mutliple of the intensity values for the FIRST
// event in the file.

event=5-Year
inten=1.10x

// Now define two more events using specific intensity values.
// For 25-year and greater, also set a frequency factor.

event=10-Year
inten=8.52 6.72 5.04 3.84 2.28 1.32 .684 .396 .216

event=25-Year
cf=1.1
inten=9.23 7.28 5.46 4.16 2.47 1.42 .741 .429 .234

// Now define two events using coefficients.  See the IDF.TXT
// file for details on the coefficient options.

event=50-Year
cf=1.2
coef1= 82.29  10  0.7650

event=100-Year
cf=1.25
coef1= 93.00  10  0.7650

// Note: For demonstration purposes, this file uses several
// different types of IDF definitions in the same file.  Your
// actual file will generally use the same technique for all
// the events.