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FloodNY

New York Flood Hazard Profile

Climate-Adjusted Hazard Data · Model Version 1.0

Overview

New York faces flood hazard from coastal storm surge (New York City, Long Island), riverine flooding (Hudson Valley, Mohawk Valley), and urban flash flooding driven by intense precipitation events. NOAA data shows the Northeast US has experienced a significant increase in heavy precipitation events since 1958. The NYC metropolitan area has unique coastal flood exposure from nor'easters and post-tropical cyclones.

Notable Historical Events

12012 Hurricane Sandy — $19B+ insured losses in NY (FEMA DR-4085)
22021 Tropical Storm Ida remnants — flash flooding, 13 fatalities in NYC subway system
32011 Hurricane Irene — catastrophic riverine flooding in upstate NY (FEMA DR-4020)

Hazard Scoring Approach

CivilSense computes a Climate-Adjusted Hazard Score (0–10) for flood hazard at any US address. The score is composed of weighted sub-components derived from federal data sources and peer-reviewed research. All score components are transparent and returned in API responses.

These are hazard scores — physical intensity likelihood only. They do not include property exposure or vulnerability data. We never call a hazard score a risk score. See the full methodology for scoring details.

Analyze Your Address

Enter any New York address to see location-specific flood hazard scoring with full methodology transparency.

Open Live Map — New York

Data Sources

FEMA National Flood Hazard Layerwww.fema.gov
NOAA AHPS River Gaugeswater.weather.gov
NYC Flood Hazard Mapperwww.nyc.gov

Related

New York Severe WeatherFlood Methodology

Climate-Adjusted Hazard Score — derived from peer-reviewed sources listed above. Property exposure data not included. Not a substitute for professional actuarial assessment. For situational awareness only — not for emergency response.

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For situational awareness only — not for emergency response.

Data: USGS · NOAA · FEMA · NASA FIRMS · GDELT