Flood Resiliency

Westchester County Department of Environmental Facilities

Yonkers Joint Water Resource Recovery Facility – Flood Vulnerability Study

CAMCE is commissioned to provide engineering analyses for the Yonkers Joint Water Resource Recovery Facility in order to determine its resilience to withstand up to the 500-year flood. This includes field investigation of the site as well as HydroCAD analysis of storm water infrastructure to maintain the facility operation during flood events and subsequent report on findings recommendations for improvement. This involves structural assessments of the Sludge Control Building and Blower and Administration Building, to determine if structural modifications are required to withstand the 500-year flood, as well as the flood elevation that the buildings could withstand without any structural modifications.

New York City EDC

Resiliency Audits and Site Selection for Design of Floodproofing Systems

During its landfall, Hurricane Sandy in 2012 exposed the susceptibility of New York’s and New Jersey’s urban and sub-urban coastal areas to flood waters resulting from simultaneous storm surge, hightide and rain conditions. Most damage to mid- and high-rise buildings during Hurricane Sandy resultedfrom inundation of mechanical, electrical, plumbing, and other critical utility systems. Many of thesesystems were not elevated to or above the appropriate base flood elevation.

The Project Team proposed to install a network of sensors and active and passively controlled floodproofing measures to help protect against localized flooding at 3-5 small business pilot sites whichwould be selected based on individualized site audits. In particular, floodproofing measures consisting of inflatable flood guards, check valves, actuated valves, shields and other technologies will focus on theprotection of critical infrastructure systems from being locally inundated and compromised. Thefloodproofing measures will consist of passively and/or actively controlled systems and will be monitored using low-cost field deployed sensors (e,g., water level, temperature, moisture, etc.) using an established secure cloud-based platform. The OptiRTC platform will deploy Active Floodproofing measures remotely using decision logic based on interpretation of incoming real-time data streams from local, site-specific sensor information as well as other regional data sources such as precipitation andstorm surge forecasts. For instance, if a storm surge that could cause flooding is forecasted, OptiRTC will send a signal to the local floodproofing system to deploy the floodproofing measure automatically. CAMCE assisted with the identification of no fewer than 30 small businesses to receive resiliency audits and Opti resiliency dashboards, identified flood model inputs and design conditions, assisted in selection of pilot sites and developed concept, draft, and final design plans for pilot sites’ active floodproofing systems.