Log Pearson Type III Distribution

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Timmy!

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So, I'm solving a WR hydrology problem last night (Six-Minute Solutions), and the solution instructs me to consult a standard table of log Pearson Type III coefficients to find the constant "K", given the desired recurrence interval and coefficient of skewness "g" to determine the expected recurrence of a flood event.

Of course, I could find no such table in the CERM. I downloaded one from the Web, but had to linear interpolate to come up with K (yes, I know it is bad practice to use linear interpolation on a logarithmic function, but that's another story).

Anybody have a recommendation as to another source of this "standard" table?

 
Anybody have a recommendation as to another source of this "standard" table?
When it came to looking at hydrology and probability for 'extreme events', I relied on the following text:

Hydrology & Hydraulic Systems, Ram S. Gupta (ISBN 0881338656)

Page 397, Table 8.7 provides frequency factors for Log-Pearson Type III distribution.

This book was very handy for other WR topics as well. A very valuable reference for me on the exam. ;)

JR

 
That was my college hydraulics textbook. It's a real good book packed with lots of information. I did all my OC flow and stormwater studying with this book.

I probably use that one at work more than any of my other old textbooks. I do a lot of sewer/storm drain design and hydrologic modeling. Sadly, it's a paperback edition and has been falling apart for years.

 
That was my college hydraulics textbook. It's a real good book packed with lots of information. I did all my OC flow and stormwater studying with this book.
I probably use that one at work more than any of my other old textbooks. I do a lot of sewer/storm drain design and hydrologic modeling. Sadly, it's a paperback edition and has been falling apart for years.
I totally agree !! It is really hard to find books for the practicing engineer that provide a good balance between theory and practice. This book does an excellent job of explaining hydraulics and hydrology very well. I consider it a good investment and a good reference beyond the PE exam.

I have a hardback edition of the book - picked it up for cheap for something like $25. Maybe thier is a new book in your future once your current book comes completely apart ;)

JR

 
Yeah there probably will be another one in the works at some point. It's almost to the point where pages are gonna start falling out if I open the thing up all the way.

old-book.jpg


 
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Ray --

Nice find man !! :brickwall: That's the table I have from my textbook.

You are okay in my book ... I don't care what VTE says about people from Jersey. :beerchug:

Regards,

JR

 
Ray --
Nice find man !! :brickwall: That's the table I have from my textbook.

You are okay in my book ... I don't care what VTE says about people from Jersey. :beerchug:

Regards,

JR
JR

I work for a construction manager in Jersey, we can get anything accomplished.

Does this mean Jersey moves up a notch in his estimation????

-Ray

 
I think VTE can be persuaded to adjust his ratings a tad. :beerchug:

On a separate, serious note - it sounds like you are well on your way to passing.

JR

 
Anybody have a recommendation as to another source of this "standard" table?
When it came to looking at hydrology and probability for 'extreme events', I relied on the following text:
Hydrology & Hydraulic Systems, Ram S. Gupta (ISBN 0881338656)

Page 397, Table 8.7 provides frequency factors for Log-Pearson Type III distribution.

This book was very handy for other WR topics as well. A very valuable reference for me on the exam. :2cents:

JR
Thanks for the $0.02!

I looked at my old hydraulics book from college and the information in it was minimal compared to what I saw in the table of contents of the Gupta book (thanks Amazon for the Look Inside function). I bought the 2001 version of it for just under $22. That's pretty darn good. If it helps me get 1 right that I couldn't otherwise figure out, the book was worth it.

 
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