Flood frequency analysis ??

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Nilotpal Debbarma

L-Moments

Luis Ernesto Cervera Gómez

Check this!

https://www.researchgate.net/post/Which_method_of_Flood_Frequency_Analysis_to_select_among_many

Kaveh Zamani

Very detailed discussion, basics, tools, details of implementation and examples you may find in:

Guidelines for Determining Flood Flow Frequency Bulletin 17C , By USGS, You can download it for free from here:

https://pubs.usgs.gov/tm/04/b05/tm4b5.pdf

Hope it helps,

Cuauhtémoc T. Vidrio-Sahagún

It depends on the specific objective you are pursuing. However, in classical Flood Frequency Analysis, L-Moments Method is often used because they are less sensitive to sampling variability and measurement errors.