April 2013, Vol. 25, No.4

Water volumes

Design of Urban Stormwater Controls — Manual of Practice (MOP) No. 23.

This manual of practice (MOP) is a revision to the 1998 first-edition MOP titled Urban Runoff Quality Management. In view of recent climate changes and stormwater management development, it is recommended that a MOP of this nature have a new edition every 5 years. 

The Water Environment Federation (WEF; Alexandria, Va.), the American Society of Civil Engineers (ASCE; Reston, Va.), and ASCE’s Environmental and Water Resources Institute (EWRI) teamed up to produce this book, which is a great resource for urban stormwater management. WEF represents environmental water engineers and scientists who are concerned about stormwater quality, collection, storage, treatment, public health and safety, and discharge permits. ASCE and EWRI represent water resources engineers who emphasize stormwater quantity, watershed, hydrology, modeling, stream channel protection, and water resources sustainability. 

The MOP was co-chaired by Daniel E. Medina and Christine A. Pomeroy, and involved a dedicated team of about 16 principal authors and nearly 100 reviewers from industry and academia. This authoritative resource explains how stormwater control systems can be designed to meet multidisciplinary objectives, including flood control, stream channel protection, groundwater recharge, water quality protection, public safety protection, human health and welfare, and multipurpose public benefits, such as provision of open space, parks, playgrounds, trails, wildlife habitat, and enhancement of property values. It is well-balanced in writing style, chapter length, and engineering discussions. 

This MOP focuses on consolidating technologies under a comprehensive view of stormwater management in an attempt to foster a convergence between traditional stormwater controls and innovative green infrastructure. Metrification is another global new trend in the fields of water resources engineering and environmental engineering. Both the U.S. customary units and the international SI units are used throughout the book. 

Specific coverage of this book includes an urban stormwater management overview; effects of stormwater on receiving waters; performance goals for stormwater controls; unit processes and operations for stormwater control; selection criteria and design considerations; swales and strips; basins, filters, and infiltrators; gross pollutant traps and mechanical operations; maintenance of stormwater controls; whole life cost of stormwater controls; performance assessment; and analytical tools for simulation of stormwater controls. 

This fine reference book is geared toward urban stormwater managers; design engineers; urban planners; university professors; stormwater treatment equipment manufacturers; and local, state, and federal government employees involved in urban stormwater controls. The book may become a textbook easily if it can be expanded to include both a new chapter on storm sewer design and more design examples and diagrams. 

This book can be further improved by adding more tabulated historical rainfall data, design diagrams, design examples, and WEF/ASCE recommendations. The readers also would have liked to learn how to choose the best management practices for urban stormwater control when facing the global warming situation and how to apply the design equations and design criteria to practical design of urban stormwater collection and control systems. 

The MOP introduces only ultraviolet, ozonation, and amines for stormwater disinfection. The most common disinfection process (chlorination) and the latest development (advanced oxidation process) should have been addressed.  

For more details or to purchase the Design of Urban Stormwater Controls, MOP 23 visit Shop WEF 



Lawrence K. Wang and Mu-Hao S. Wang are professors and consultants at the Lenox Institute of Technology (Newtonville, N.Y.).