NOAA Precipitation Frequency Storm using Hydrocad
NOAA Precipitation Frequency Storm using Hydrocad
(OP)
I'm modeling a watersheet using Hydrocad software to determine the increase outflow due to a development. The local regulation require the use of precipitation frequency data obtained from NOAA. How I model 24h storm using frequency storm data?





RE: NOAA Precipitation Frequency Storm using Hydrocad
Most studies continue to use the standard SCS Type I, II, or III rainfall distributions. In these situations, all you need to do with the NOAA data is to enter the 24-hour rainfall depth for each event.
In rare cases, you may need to develop a custom rainfall distribution based on the NOAA data. Check your regulations to to see if this is required.
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: NOAA Precipitation Frequency Storm using Hydrocad
Attached are the local regulation that describe the guidelines to prepare H-H study
RE: NOAA Precipitation Frequency Storm using Hydrocad
Please note that if you already have a mass curve from another another program, you may prefer to convert this to a HydroCAD format, rather than re-generate the curve. For details please see www.hydrocad.net/rainfall.htm
Peter Smart
HydroCAD Software
www.hydrocad.net