Flood Frequency Analysis - Part 1

This video describes flood frequency analysis (FFA) using historical data, including explanation of annual maximum and partial duration series. Two simple methods, including computing recurrence interval and ranking or plotting position, for performing FFA are explained.

[DanteRamirez-vh]

Thank you for this video! Very well done and helpful!

[pames]

Brilliant! Thank you very much for an amazing lecture.

[safaanaffaa]

Thank you for the interesting presentation. Why did you call it the probability of failure if you already calculated the probability of exceeding the threshold? could you please explain. I didn't understand this part.

[GQH]

Professor, I have a question. Say I have 3650 days( 10 years) of daily discharge. I found 365 days Q is larger than 100K cfs. Does that mean the exceedance probability for 100K cfs is 10%? Then, is my return period 10 days? or 10 years? Thanks a lot!

[Nostalgia-futuro]

So in Peak over the threshold, you pick randomly and then check if its good with the Mean residual plot and stability plot, or is there a way to choose the threshold in peak over threshold

[babalolaolugbenga]

I have 30years data i need flood of 10years, 25years, 50years and 100years return period . do i use FFA using anual maximum series or log pearson type III (PDF) to dtermine the return period

[Rainstorm]

Thanks Sir.
So does the calculated probability of 93% also means, in every year there is 93% chance of exceeding 75, 000 cfs?

[aarizahmed]

How can we define the threshold value for eg 120 years of RF data

[MBaitullahAlAmin]

Thank you Sir. one question. How many number of data is ideal should be used to do a flood frequency analysis?

[yuetwong]

Is it possible to generate a demensionless hydrograph using discharge data?