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Leveraging Technology to Streamline Operations

While manually controlled flood mitigation infrastructure can be effective, its function requires operators to diligently monitor water levels and make real time decisions to implement mitigation strategies. Woodard & Curran offers a more streamlined approach. Our experts have tailored successful solutions for many clients using real-time data and automated controls to optimize the performance of flood mitigation, water quality, and water quantity control infrastructure. We leverage Continuous Monitoring and Adaptive Control (CMAC) that works with sensors and data analytics to continuously monitor water levels, weather conditions, and other relevant parameters and respond by adjusting control structures, such as tide gates or stormwater detention basins. This adaptive approach efficiently manages water flow and storage, while allowing for more precise and timely responses to changing conditions. The outcome is reduced flooding risk, minimized peak flows in drainage networks, increased water quality, and more resilient infrastructure.

Successful implementation of CMAC

The Duck Slough Watershed, which spans 14 square miles in southwest Pasco County, Florida, experiences periodic flooding that impacts seven residential communities. There were numerous structures manually operated to manage the east-to-west drainage flow and mitigate flood risk. Woodard & Curran was brought in to install actuators, electrical and fiber-optic services and Supervisory Control and Data Acquisition (SCADA), and communications to automate eight existing flood control gates. Since this project’s implementation, Pasco County has seen improvement in response times during storm events. County staff found it more efficient to manage the flow of stormwater through the watershed to alleviate flooding.

Author

David White National Practice Leader Flood Mitigation & Stormwater

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CMAC in Pasco County

Similarly, Woodard & Curran upgraded two manually operated tide gates regulating flow from the 80-acre Manursing Lake in Rye, New York at the outlet to Long Island Sound. The tide gates were only periodically opened or monitored by staff, which meant poorly regulated tidal flow caused negative ecological consequences in the lake, reducing fish access and breeding, increasing sedimentation, eliminating intertidal zones, and impacting native vegetation. Woodard & Curran installed new motorized stainless-steel gates and implemented a SCADA system that uses radar level transmitters to provide constant water level monitoring. Specified minimum and maximum water levels are programmed to trigger the gates opening or closing for more effective operations and greater control over the intertidal flow between Playland Lake and the Long Island Sound.

Tide Gates at Manursing Lake

Another example is work completed in Northern Vermont that aimed to mitigate high flows and improve water quality in a heavily urbanized, stormwater impaired watershed. One of our stormwater experts was integral in the CMAC retrofit of a wet pond that achieved 130,000 cubic feet of additional storage at one-fifth the cost of expanding the pond’s footprint to accommodate that same amount. The CMAC system not only helps streamline operations, but it also proved beneficial in optimizing financial resources and created greater water controls in a densely populated area.

Woodard & Curran’s successful implementation of CMAC solutions for flood mitigation and water quality treatment for these three clients highlight our innovative design approach and incorporation of advanced technology to effectively manage stormwater, protect natural resources, enhance resiliency, and safeguard communities, while minimizing the need for costly infrastructure projects.

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