Hurricane Sandy caused over $19 billion in damages in New York City, flooding over 51 square miles and inundating over 88,000 buildings. Climate change is projected to increase both chronic hazards like higher temperatures and more frequent extreme weather events. The 100-year floodplain is projected to expand significantly by the 2050s, putting hundreds of thousands more residents, jobs, and buildings at risk. To address these challenges, One New York is the city's strategic plan to strengthen neighborhoods, upgrade buildings, adapt infrastructure, and bolster coastal defenses to increase resilience to climate change and future disasters. The plan outlines numerous projects across these areas to prepare New York for 21st century threats.

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New Jersey Future Redevelopment Forum
March 11, 2016
Vision 4: Our Resilient City

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Hurricane Sandy
Sandy was the worst natural disaster New York City has ever seen.
 44 lives lost
 $19 billion in damages and lost
economic activity
 51 square miles (17% of NYC land
mass) flooded
 88,700 buildings were
inundated, including 23,400
businesses
 2,000,000 people lost power,
many for weeks and longer
Major disruptions to lives, neighborhoods, and infrastructure demonstrated our
vulnerabilities to coastal storms and the risks of a changing climate.
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By the 2050s:
 4.1oF to 5.7oF increase in average temperature
 4% to 11% increase in average annual precipitation
 Sea levels likely to rise 1-2 ft.; maybe 2½ ft.
By 2100:
 High-end projections may reach 6 ft.
By the 2050s:
 Number of days in NYC above 90⁰ could triple
Even today:
 100-year floodplain expanded by 17 square miles (51%) citywide;
2.3 ft. average increase in 100-year flood elevations; will increase
with further sea level rise; now encompasses 71,500 structures
The NYC Panel on Climate Change (NPCC) projects increased chronic climate hazards…
…and increased impact from extreme weather events.
Climate Change / 21st Century Threats
But we know that Sandy is not the only risk we face. We must grapple with the
impacts of climate change on our city...
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Source: FEMA; CUNY Institute for Sustainable Cities
Projected floodplain for the 2020s, 2050s, 2080s, and 2100 100-year Floodplain*
2013
PFIRMs
2050s
Projected
Change
(%)
Residents 400,000 808,900 102%
Jobs 290,800 555,700 91%
Buildings 71,500 118,000 65%
1-4 Family 57,400 89,000 55%
Floor Area
(Sq Ft.)
534M 855M 42%
Climate Change / 21st Century Threats
…And a growing risk of flooding across the city’s 520 miles of coastline, which will be
exacerbated by sea level rise.
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* Numbers are rounded for clarity
FEMA 2013 Preliminary FIRMs 100-year Floodplain
Projected 2020s 100-year Floodplain
Projected 2050s 100-year Floodplain
Projected 2080s 100-year Floodplain
Projected 2100 100-year Floodplain

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Increasing inequality
A growing population
Climate Change / 21st Century Threats
And as we look toward the future, we must take stock of other challenges.
Aging infrastructure
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9 million by 2040
Hurricane Sandy

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One New York:
The Plan for a
Strong and Just City
The plan envisions how we want our City
to look in ten years and beyond.
OneNYC recognizes a historical moment:
in 2025, we will celebrate our 400th
anniversary and begin our fifth century.
OneNYC
To address these challenges, Mayor Bill de Blasio released a new long-term strategic plan
to prepare New York City for the future.
We commit to the goals and initiatives
designed to achieve that long-term vision.
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Our neighborhoods, economy, and public
services will be ready to withstand and emerge
stronger from the impacts of climate change
and other 21st century threats.
Our Resilient City
OneNYC: Resiliency
Following Hurricane Sandy, a global conversation on resiliency emerged. Here’s
what it means to us in New York City.

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Neighborhoods
Every city neighborhood will be safer by strengthening
community, social, and economic resiliency
Buildings
The city’s buildings will be upgraded against changing climate
impacts
Infrastructure
Infrastructure systems across the region will adapt to enable
continue services
Coastal Defense New York City’s coastal defenses will be strengthened against
flooding and sea level rise
OneNYC: Our Resilient City
OneNYC strengthens and expands the City’s commitment to a comprehensive and
multilayered approach to resiliency.
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KEY PROJECTS
 Launching a non-profit and houses of worship
task force to improve community resiliency
 Reforming Hurricane Sandy Loan and Grant
Program, serving hundreds of businesses
 Awarding $30 million to small businesses for
innovative resiliency investments
 Launching a new technical assistance program
for small businesses
 Expanding emergency preparation against a
wide range of threats
 Partnering with academics and experts on
urban heat island mitigation efforts
 Creating jobs for Sandy-impacted residents to
participate in recovery projects
Our Resilient City: Neighborhoods
With OneNYC, every city neighborhood will be safer by strengthening community,
social, and economic resiliency…
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 Reforming and delivering the city’s housing
recovery program
 Investing $3 billion in NYCHA resiliency
 Upgrading city building codes
 Evaluating land use as a resiliency tool
 Investing in multi-family resiliency
 Securing reforms to national flood insurance
program
 Evaluating flood insurance affordability
 Publishing flood resiliency guidelines for
residential structures
Our Resilient City: Buildings
…The city’s buildings will be upgraded against changing climate impacts…
KEY PROJECTS
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Water and
wastewater:
$5,500 million
Hospitals:
$2,900 million
Schools:
$755 million
NYCHA:
$3,200 million
MTA Fix/Fortify:
$10,525 million
 Investing $1.7 billion in public hospitals
 Expanding green infrastructure and bluebelt
investments
 Upgrading wastewater treatment plants
 Advancing boardwalk improvements
 Creating the city’s first wetland mitigation bank
 Investing in Staten Island University Hospital
resiliency
 Rebuilding streets and stormwater management
infrastructure
 Improving civic facilities citywide
FEMA 2013 Preliminary FIRMs 100-year Floodplain
2050s Projected 100-Year Floodplain
KEY PROJECTS
Our Resilient City: Infrastructure
…Infrastructure systems across the region will adapt to maintain continued services…
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Completed
Study funded
Project funded
Unfunded
DCP Resilient
Neighborhoods
Study areas
 Secured $591 million through HUD’s Rebuild by
Design and National Disaster Resilience
Competition
 Partnering with USACE on current authorized
projects in Sea Gate, Rockaway and Jamaica
Bay, and in Staten Island
 Partnering with USACE on NY Harbor feasibility
study to achieve new authorized projects
 Launching Red Hook and Breezy Point
integrated flood protection projects
 Upgrading citywide bulkheads and reforming
waterfront management
 Studying new projects for implementation
KEY PROJECTS
Our Resilient City: Coastal Defense
…And New York City’s coastal defenses will be strengthened against flooding and
sea level rise.
FEMA 2013 Preliminary FIRMs 100-year Floodplain
2050s Projected 100-Year Floodplain
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Regional Collaboration
With OneNYC, the City recognized the important role of the region in crafting its long-
term strategic plan.
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 National Flood Insurance Program
 City’s flood map appeal to FEMA
 U.S. Army Corps of Engineers
 Transportation system
 Liquid fuels supply
OPPORTUNITIES

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nyc.gov/resiliency
@NYClimate