Close up view of a flooded driveway and neighborhood

  • Public Domain. Credit: FEMA

    • Hazard

    Flooding – Coastal

    Coastal flooding occurs when water inundates or covers normally dry coastal land as a result of high or rising tides or storm surges.

    Coordinate with community members, transportation agencies and private entities to identify local and regional transportation, transit and active transportation corridors that are at-risk from climate Require floodproofing as a condition of a certificate of occupancy for structures in the floodplain, for example, when renovation costs are 25% of the value of building. Use the best available science and resilient design features in transportation infrastructure to improve resiliency to extreme climate events. Identify, harden and water seal critical infrastructure, especially electrical, heating and ventilation hardware in the floodplain. Plan to relocate critical facilities in high-risk areas using a frame in line with their expansion or refurbishment cycles. Implement a no new development restriction in the floodplain for industrial, commercial and residential properties. Build partnerships with local nonprofits to increase opportunities for implementing green infrastructure. Green infrastructure helps manage stormwater on site, can improve water quality, can help protect Increase the amount of ground cover and understory plantings for their water retention capacity. Complete the repair, reinforcement, and increased height of the (existing) Battery seawall. This includes rip-rap and repairing damage due to past hurricanes. Evaluate and pilot smart technologies to manage and monitor stormwater and flooding. One example technology is the use of real-time controls in detention systems across the watershed to manage volumes Test new technologies, materials and tools to increase flood preparedness. For example, test inflatable flood barriers. Design program policies to promote stream and wetland restoration. Ensure adequate retention, drainage and diversion of stormwater. Such policies could also encourage green infrastructure such as grassy Implement an overlay zone for coastal resilience. The zone could accommodate marsh migration, include coastal setbacks and protect against future storm surge on private property. Identify garage locations in several neighborhoods where Emergency Medical Services can shelter ambulances and EMA staff during extreme storms and have rapid access to the neighborhoods they serve. To help manage floodwaters, integrate natural buffer requirements, such as wetlands and soft shorelines, into new development or redevelopment for all properties. Ideally, design would go beyond open Grow partnerships between the public, private and nonprofit sectors to provide critical services to vulnerable populations in times of crisis. Establish design standards for buildings located in areas susceptible to sea level rise, coastal inundation, flooding and erosion. One example is to include open or deep foundation systems (e.g., piles Seal wastewater pipes that are at or below the existing groundwater level to protect the system against rising groundwater. Upgrade water and wastewater systems to accommodate projected changes in water quality, quantity and availability. Obtain easements on properties at risk of flooding and use those areas for water retention and drainage. Browse all strategies

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