FLOOD03313

• County: Denver
• Basin: South Platte
• Title: Drop Structures in the Denver Metropolitan Area
• Date: 12/1/1986
• Prepared For: UDFDC
• Prepared By: McLaughlin Water Engineers, Ltd.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Participants
and
Acknowledgements

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This study was directed by Mr. Bill DeGroot, Chief, Flood Plain Management, Urban

Drainage and Flood Control District. In his years at the Urban Drainage District, he

has developed a comprehensive view of the structures built by the District, other

governmental agencies and the development community. As a result, he had the

best perspective on the types of problems that were occurring on the projects of

these three groups, as well as ideas for reasonable solutions. Mr. Mark Hunter,

Chief of Maintenance, was also heavily involved in all aspects of the project and

was responsible for much of the basic information on maintenance costs, approaches

taken to date in repairs, and projecting future maintenance costs. Mr. Ben Urbonas,

Chief of Master Planning, had worked heavily on the development of the Drop

Structure Criteria issued in 1982, and what had taken place since its inception,

particularly In the area of construction quality control. His participation in the

technical aspects of the project was greatly appreciated.

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Mr. Bob Hoffmaster, Chief of Construction, was influential on the types of structures

that were effective, reasonable to build and cost effective. Mr. Scott Tucker,

Executive Director, was influential in the overall study direction, and provided focus

on the key problems and expressing the goals of the District. Mr. Kevin Stuart,

who works with Mr. DeGroot, was helpful in many ways including study direction,

technical issues, and in helping us to express and communicate the concepts.

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The Metropolitan Engineering Consulting Community was extremely helpful, open and

professional. Each group we contacted provided information on drops, some that

they expressed worked well and others that had problems. Also they provided ideas

and concepts that were influential in this study. Special thanks go to Larry Muller,

Steve Hogeboom, and John Hamilton of Muller Engineering, lnc; Pat Mulhern and

Doug Williams of Greenhorne and O'Mara; Bill Ruzzo of WRC Engineering Inc.; Dr.

Michael A. Stevens, private consultant; Doug Weber at Centennial Engineers; Tom

Fuentas at Holland Corporation; and Ru Ming Li at SLA. Mr. Jim Brasch and Mr.

Andrew Reese at the Corps of Engineers provided information on their design

guidelines; Mr. Tom Rhone at the Bureau of Reclamation provided information on

model studies for stepped spillways.

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