FEMA June 2013 Flood Maps
100-YEAR FLOODPLAIN* 1983 FIRMs 2013 PWMs Change (%) Residents 218,000 398,000 82% Jobs 214,000 271,000 27% Buildings 36,000 68,000 89% Floor Area (SF) 377M 534M 42% 100-Year Floodplain: V Zone (FEMA 2013 PWMs) 100-Year Floodplain: A Zone (FEMA 2013 PWMs) 500-Year Floodplain (FEMA 2013 PWMs) * Numbers are rounded for clarity CONFIDENTIAL 14
Flood Maps in 2020s and
2050s 100-YEAR FLOODPLAIN* 2013 PWMs 398,000 801,000 101% Jobs 271,000 430,000 59% Buildings 68,000 114,000 68% Floor Area (SF) * Numbers are rounded for clarity Change (%) Residents CONFIDENTIAL 2050s Projected 534M 855M 60% 15
Top Ten High-Water Events at
the Battery, 1900-2012 Note: Among top 10 high water marks at the Battery since 1900, all are post-1950 Sandy eclipsed the previous record, set in 1960, by almost 40% Source: UCAR/ NCAR, NOAA CONFIDENTIAL 16
Cost and Likelihood of Future
Storms Likelihood of a $19B storm (like Sandy) will grow 17% by the 2020s and 40% by the 2050s ~$90B ~$35B 1/50 ~$19B 1/60 Likely loss of 1/70-year storm (like Sandy) will grow to $35B by the 2020s and $90B by the 2050s (in current dollars) 1/70 Likelihood of Damage (%) (Return Period, 50 = 1/50 years) Source: Swiss Re model CONFIDENTIAL 17
Communities devastated by Sandy continue
to suffer from isolation from discussions about recovery and resilience. Proposal: establish long-term local hubs integrating recovery assistance (like Build It Back), agency services (like building permits) and facilitation of long-term planning for resilience.
Priorities for Creating a Livable
and Resilient New York City Mobilize Existing Resources and Diverse Expertise. Strengthen Local Capacities. Invest In Flexible And Adaptive Infrastructure. Lead With Policies That Sustain Resilience.