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    Home Projects Washington Street Flood Control & Green Retrofits

    Washington Street Flood Control & Green Retrofits

    Location Seaford, DE


    Client City of Seaford


    Size 55 acre drainage area


    Date of Completion 2012


    Services #Civil / Site Engineering #Construction Services #Consulting


    Sectors #Consulting #Environmental #Funding Assistance #Government #Infrastructure #Stormwater Management #Sustainable Site Design

    George, Miles & Buhr, LLC (GMB) provided engineering services to the City of Seaford to address repetitive extreme flooding in and around the Washington Street area.  The project began with an in-depth analysis of the existing storm drain system, and the evaluation of several alternatives to alleviate the periodic flooding that occurs during heavy rainfall events.  Based upon our extensive hydraulic modeling, we determined that the existing system was extremely undersized.  GMB then designed a new storm drain system, which consisted of approximately 3,549 LF of new stormwater piping ranging in sizes from 15” to 36”.  In conjunction with the new stormwater piping system, GMB designed several “green infrastructure” improvements to improve the water quality in stormwater runoff to the Nanticoke River.   We also served as Funding Coordinator for this project, helping to procure and administer a Delaware Clean Water State Revolving Fund (CWSRF) Green Project Reserve loan.

    This project was formulated out of the need to protect the safety and welfare of a residential neighborhood and adjoining church campus that have been plagued by flooding from extreme storms over the past 12 years.  It was clear that the existing system was extremely undersized and needed to be replaced.

    As part of the design solution, the project was adapted to include stormwater retrofit demonstration projects as the first of its kind within western Sussex County.  In conjunction with flood control benefits provided, the project improves water quality in stormwater runoff to the Nanticoke River. Incorporated into the design are several “green infrastructure” improvements, including bioretention, permeable pavers, street trees, and manufactured BMPs.

    In addition to the flood control benefits provided to the target area, the project diverts flow away from the existing DelDOT storm sewer that drains a section of Stein Highway and adjacent communities, thereby reducing flows in the existing system and increasing flood protection in those additional areas.  Runoff is also now diverted downstream of Williams Pond, which breached during the ’06 flood, resulting in scour downstream of the dam embankment (pavement failure at Poplar St.).  By diverting runoff downstream of the spillway, the project decreases the potential for future embankment failure in Williams Pond.

    This project’s unique approach to municipal stormwater management is the first of its kind within western Sussex County, by applying conventional “green” technologies in an urban environment.

    This project was awarded a 2013 Engineering Excellence Honor Award from the American Council of Engineering Companies (ACEC) of Delaware.

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    The City of Seaford, Delaware

    GMB routinely deploys a highly efficient design team that places a high emphasis on problem-solving, client needs, and budget goals. Based on my past professional experiences with GMB, I would highly recommend this firm.

    Charles Anderson
    City Manager
    The City of Seaford, Delaware

    Carroll County Utilities

    We are thrilled with the current operation of the new Hampstead Wastewater Treatment Plant designed by GMB. The operator’s level of stress has dropped dramatically since the upgraded plant has become fully operational.

    Andrew C. Watcher
    Bureau Chief
    Carroll County Utilities

    Harper & Sons, Inc. 

    For over 35 years, our firm has appreciated the outstanding engineering and architecture that GMB can be trusted to deliver. Project after project, we have found their designs to be sound and thoughtful. We’ve experienced the same successful outcomes while executing design-build and traditional general contracted projects – a ‘nuts and bolts’ design approach with excellent constructability, functionality, and pleasing atheistic that benefit both the constructor and project owner. We highly recommend GMB for any commercial, institutional, or civil construction project.

    Benson Harper
    Vice President
    HARPER & SONS, INC.

    Town of Millsboro

    Andrew Lyons and the team at GMB are a pleasure to work with.  They are prepared and proactive, always looking out for their client’s best interest.

    Jamie Burk
    Town Manager
    Town of Millsboro

    Choptank Community Health System, Inc.

    We recently finished the second of three projects for which GMB won the bids in the last four years.  I would like to thank Morgan Helfrich, Deane Townsend, and the entire GMB Team for their attention to detail, great communications skills, and mindfulness of budget. They are impressive to watch as they make great progress in the development of construction documents for our newest facility in Federalsburg. I look forward to the continued utilization of their knowledge, experience, and architectural skills to complete our Federalsburg project.  I highly recommend GMB to anyone contemplating a building or renovation project of any size.

    Brett Meyers
    Facilities Director
    Choptank Community Health System, Inc.

    Town of St. Michaels, MD

    In 2020, GMB completed a DNR funded Harbor and Stormwater Infrastructure Study for the Town of St Michaels. This valuable study projected the flooding and sea level rise by 2050 and then identified at risk areas and associated mitigation strategies for our main harbor and adjacent infrastructure. This was the valuable foundation the Town Commissioners needed for their planning and developed community awareness and support. Building on this study, the Town of St Michaels created the Climate Change/ Sea Level Rise Commission to pursue grants to implement these mitigation plans. Thanks to GMB’s study, the Town has been successful in pursuing grant funding.

    Roy Myers
    Chair, Waterways Management Advisory Board
    Town of St. Michaels, Maryland

    Sussex County Emergency Medical Services

    Sussex County Emergency Medical Services (SCEMS) has been very satisfied with the quality of GMB’s work and we look forward to working with the firm for years to come.  In addition, GMB engineers and architects take a personal interest in the betterment of our community.

    Robert (Bobby) Schoonover, AA, NRP
    EMS Manager of Logistics
    Sussex County Emergency Medical Services

    Blue Water Development

    We enjoy, trust and consider GMB our go-to engineering firm.  They are a true partner, always bringing value-engineering solutions to every project.

    Todd Burbage
    CEO
    Blue Water Development

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