Flood Frequency Analysis – Part 3: Log Pearson III Distribution

This video is part 3 of the 3-part series on flood frequency analysis.
Flood-frequency analysis provides information about the magnitude and frequency of flood discharges based on records of annual maximum instantaneous peak discharges collected at stream gages. In essence, flood-frequency analysis is used to estimate the probability of flooding at specific river locations.

[Ryan-pc]

@ 14:22, do you mean you multiply by 100, not divide by 100 - to get from a percentage to the actual value?

[LeonardoUV]

Where may I find the USGS publication with the source of the lower and upper limit coefficients?

[UpeakshikaBandara]

Thanks! very informative. It would also be useful if you could provide reference to these equations.

[CarbonTaxLOL]

Hey mate, where is your video on interpolation that you reference?

[shabnammajnooni]

Thanks; It was a clear and useful series. I wonder whether you can share the excel file wth us.

[Kazu-don]

Hello, how would you do the Kolmogorov-Smirnov test? I've been having problems finding how to calculate the CDF for the Log Pearson III distribution

[MuhammadAdnan-qx]

Greetings. Very informative. I was inserting the formulas but getting errors. Could you please paste the formulas for "z", "K", "Klb", "Kub". Thanks

[pankajsarkar]

Can you provide the references used for this design example? Any books or research article.

[nadierupasinghe]

Thank you! this is a really good tutorial

[crayzygamer]

Can frequency factor K for log Pearson Type III be used for frequency factor K for Pearson Type III? Thanks.

[CarbonTaxLOL]

So if I calculate x bar, but I get an error because in Australia a lot of the values are 0, I have simply ommited the 0 values. but now my 5600 data set is only 560?

should this then change the weibull formula to exclude 0 values?