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    Harbor & Stormwater Infrastructure Assessment

    St. Michaels Flooding SLR and MHHW 2030
    St. Michaels Flooding
    SLR and MHHW 2030

    Location St. Michaels, MD

    Client Town of St. Michaels

    Date of Completion 2020

    Services #Consulting

    Sectors #Coastal Resiliency #Consulting #Environmental #Government #Infrastructure #Marine Facilities #Stormwater Management

    GMB assisted the Town of St. Michaels with a Harbor & Stormwater Infrastructure Assessment.  The goal of this study was to develop the topography of tidal flooding areas around the harbor as the sea level rises in the next 30 years and outline the issues surrounding stormwater management infrastructure and tidal flooding. This stormwater infrastructure assessment, along with projected impacts, will be used to complete a detailed analysis to develop viable, cost-efficient strategies and projects to prepare for the sea level rise. The focus area is St. Michaels harbors and adjacent infrastructure, including roads, culverts, pedestrian sidewalks, docks, bulkheads.  Emphasis will be placed on the impact on waterfront businesses, residents, museums, B&B’s and hotels.

    The final document will be used in the decision-making process for future capital projects and to update the Town’s floodplain ordinances and Hazard Mitigation Plans as required by the Town’s Comprehensive Plan. In fact, a Climate Change / Sea Level Rise Commission has been formed from the recommendations in the report, and GMB retained as a technical advisor to the Town and Commission.  The final report defined the topography of nuisance flooding in the areas surrounding the Town’s harbors 2020 through 2050 and used the stormwater and harbor infrastructure inventory to identify and prioritize issues and recommend innovative adaptation projects.

    GMB’s tasks included:

    • Assess tidal flooding and identify infrastructure, community assets, and properties at risk
    • Document and map the stormwater and harbor infrastructure using GIS
    • Identify, categorize, and prioritize deficiencies in the overall system and develop an implementation plan that includes phases, timeline and budget
    • Draft floodplain ordinance language and waterway management regulations and identify language and/or projects that could be included in the next Talbot County Hazard Mitigation Plan

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    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

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    Brett Meyers
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