I must first acknowledge the authors who made the Stormwater Collection Systems Design Handbook possible. It has been a sincere privilege to have worked with such an excellent group of dedicated people. They are all experienced professionals who are among the leading experts in stormwater systems design. References to material in the Handbook should be attributed to the respective chapter authors.

During the past twenty-five years of my academic career as a professor I have received help and encouragement from so many people that it is not possible to name them all. These people represent a wide range of universities, research institutions, government agencies, and professions. To all of you I express my deepest thanks.

I would like to acknowledge Arizona State University, especially for the time afforded me to pursue this Handbook.

I would like to thank Larry Hager of McGraw-Hill for having faith in me through his willingness to publish this Handbook. I sincerely appreciated his advice and encouragement throughout this project. Larry has always been a great guy to work with on the four handbooks that we have done together. He is always a joy to talk to as he is one of the few willing to listen to my fly-fishing and snow-skiing experiences.

This Handbook has been a part of a personal journey that began years ago when I was a young boy with a love of water. Each book that I have worked on has been a part of my life long journey in...