• Sea level rise
  • Flood protection
  • Stormwater management: Site-specific low impact design
  • Stormwater management: Basin scale
  • Water quality

WATER RESOURCES

Water is a critical resource in Florida fundamental to the residents, the natural environment, the agricultural economy and recreational opportunities. Balancing the demands of a growing population with the need to protect the natural ecology of rivers, lakes, wetlands and estuaries requires thoughtful planning and infrastructure investment. CMA is committed to providing innovative solutions that help manage and protect Florida’s most important resource.

Sea Level Rise

CMA applies a holistic approach to stormwater infrastructure, considering existing facilities, water quality, resiliency, and Sea Level Rise. Following the Urban Land Institute (ULI) recent recommendation for stormwater improvements in the face of Sea Level Rise, CMA will work with the City to incorporate not only “gray” infrastructure, but also incorporate “blue” and “green” infrastructure. “Gray” refers to engineered components, such as raising roads, drainage inlets, pipes, drainage wells, outfalls, and potentially pump stations. The “blue” and “green” infrastructure refers to natural methods of stormwater treatment and attenuation, such as bioswales, curbed rain gardens, and living shorelines. These components are additional tools in the toolbox to reduce rainfall runoff and add water quality treatment. In addition to building resiliency and sustainability into the stormwater system, items like bioswales reduce the heat island effect common to areas with large amounts of impervious area.

Flood Protection

As sea level rise and increased rainfall intensity has become a more evident driver of flooding, CMA has responded with infrastructure designs that improve resiliency within communities. In the City of Miami Beach, we provided engineering and construction administration on a design-build project for the Sunset Islands that elevated roadways and constructed stormwater pump stations to provide positive discharge and access to critical facilities even as the tailwater elevation rises. We have also provided engineering solutions to conveyance canals, bank stabilization, large culverts and water control structures. Each of these facilities are critical components of the infrastructure that provides flood protection in our communities

Stormwater Management Site-Specific Low Impact Design

Historically, the practice of civil engineering has focused on designing drainage systems that discharge excess runoff in a manner that protects on-site improvements and prevents negative impacts downstream. In recent years, there has been a recognition that a more comprehensive approach to managing stormwater provides additional benefits including improving water quality and promoting aquifer recharge for water supply. At CMA, we leverage the in-house expertise of our Landscape Architecture Department to promote the use of Low Impact Design (LID) techniques that reduce impervious surfaces and promote natural attenuation and infiltration prior to conveyance and discharge. On multiple municipal projects, our design team has identified opportunities to reduce pavement widths on roadway corridors and increase planting spaces. On every project, our design team looks for opportunities to incorporate Best Management Practices (BMPs) and pollution control devices to promote sustainability and resilience.

Stormwater Management: Basin Scale

CMA has prepared basin scale stormwater master plans for multiple municipalities and jurisdictional agencies. This experience has allowed us to understand how regional systems at the basin scale interact with local systems at the neighborhood scale. Our staff utilizes a wide array of hydrologic and hydraulic modeling tools to simulate the regional canals for representation of the tailwater conditions that secondary stormwater facilities rely on. These modeling tools are also utilized to simulate the conveyance capacity and available storage at the neighborhood scale. Over the years we have learned that although the development of a hydrologic and hydraulic model is critical for a good plan, it is not the most important deliverable. The true value of any stormwater master plan is an actionable plan for implementing practical improvements. Our decades of experience designing and constructing neighborhood improvement projects have served us well in developing conceptual plans and cost estimates tailored for use in Capital Improvement Plans that guide future programming for each municipality.

Water Quality

Since 1972 the Clean Water Act has facilitated the implementation of the National Pollutant Discharge Elimination System (NPDES) program in communities throughout the country. CMA has extensive experience managing the NPDES program for the various municipalities and developing the necessary reports to ensure compliance. This experience allows us to understand the value of making sure any data collected for drainage infrastructure or maintenance programs should be formatted in a manner that seamlessly integrates with documentation requirements.

Water Resources Projects

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