A method for rapidly developing a rainfall intensity-duration equation for durations less than one hour and recurrence intervals between 2 and 100 years for any location in the conterminous United States is presented. Optimal parameters of a general rainfall-intensity duration equation are determined using precipitation depths for durations of 5, 10, 15, 30 and 60 minutes obtained from commonly available isopluvial maps. A single set of parameters applies to the entire western U.S. For the central and eastern U.S, a graphical means of determining the parameters is provided.
Additional publication details
Rainfall intensity-duration equations
Publ by ASCE
New York, NY, United States
Hydraulic Engineering: Proceedings of the 1988 National Conference on Hydraulic Engineering