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Delaware County, New York

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Moderate overall risk
21st of 62highest risk in New York
$35Mexpected losses a year
35federal declarations
1 in 53homes with flood insurance
Photo: U.S. Geological Survey, public domain

Delaware County, New York has a moderate overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 83% of US counties. It ranks 21st of 62 counties in New York. The costliest hazards here are inland flooding, cold waves and tornadoes. FEMA estimates about $35 million a year in expected losses, or roughly $805 per resident. Since 1965 it has been included in 35 federal disaster or emergency declarations for natural events (26 major disasters). The most recent was in September 2024 (remnants of tropical storm debby). About 1 in 53 homes here carry federal flood insurance (534 policies). Since 1978, federal flood insurance has paid about $40 million on 1,291 claims here, including $19 million for floods in 2006.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Delaware County

$30.9 million a yearExpected losses. Damaging events about 2 times a year.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Cold wave

Moderate
$1.5 million a yearExpected losses. Damaging events about 5 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
$1.1 million a yearExpected losses. Damaging events about once every 3 years.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.
HazardRatingScoreExpected loss a year
Inland floodingModerate91.2
$31M
Cold waveModerate69.8
$1M
TornadoLow55.6
$1M
HurricaneLow76.8
$902K
Strong windLow51.8
$410K
EarthquakeVery Low50.4
$199K
LightningLow49.1
$159K
HailLow38.1
$118K
Winter weatherModerate72.5
$102K
Heat waveVery Low21.1
$49K
Ice stormLow42.3
$42K
LandslideModerate90.0
$40K
WildfireVery Low18.7
$5K
AvalancheLow69.3
$3K

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very high and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Delaware County. 2020s bar runs to November 2026.

By type

Severe Storm15
Flood7
Snowstorm5
Hurricane5
Drought1
Fire1

Most recent

Sep 24, 2024Remnants of Tropical Storm DebbyMajor disaster
Aug 22, 2021Hurricane HenriEmergency
Oct 1, 2018Severe Storms and FloodingMajor disaster
Jul 12, 2017Severe Winter Storm and SnowstormMajor disaster
Jul 8, 2014Severe Storms and FloodingMajor disaster
Jul 12, 2013Severe Storms and FloodingMajor disaster
Oct 28, 2012Hurricane SandyEmergency
Sep 13, 2011Remnants of Tropical Storm LeeMajor disaster
Sep 8, 2011Remnants of Tropical Storm LeeEmergency
Aug 31, 2011Hurricane IreneMajor disaster
Show all 35
Aug 26, 2011Hurricane IreneEmergency
Jun 10, 2011Severe Storms, Flooding, Tornadoes, and Straight-Line WindsMajor disaster
Mar 4, 2009Severe Winter StormMajor disaster
Dec 18, 2008Severe Winter StormEmergency
Jul 2, 2007Severe Storms and FloodingMajor disaster
Dec 12, 2006Severe Storms and FloodingMajor disaster
Jul 1, 2006Severe Storms and FloodingMajor disaster
Sep 30, 2005Hurricane Katrina EvacuationEmergency
Apr 19, 2005Severe Storms and FloodingMajor disaster
Oct 1, 2004Tropical Depression IvanMajor disaster
Oct 1, 2004Severe Storms and FloodingMajor disaster
Aug 3, 2004Severe Storms and FloodingMajor disaster
Aug 29, 2003Severe Storms, Flooding, and TornadoesMajor disaster
Mar 27, 2003SnowEmergency
Feb 25, 2003SnowstormsEmergency
Sep 11, 2001Fires and ExplosionsMajor disaster
Jul 7, 1998Severe Storms and FloodingMajor disaster
Dec 9, 1996Severe Storms High Winds, Rain and FloodingMajor disaster
Jan 24, 1996Severe Storms and FloodingMajor disaster
Jan 12, 1996Blizzard of 96 (Severe Snow Storm)Major disaster
Mar 17, 1993Severe BlizzardEmergency
May 15, 1987FloodingMajor disaster
Jul 20, 1973Severe Storms & FloodingMajor disaster
Jul 22, 1970Heavy Rains & FloodingMajor disaster
Aug 18, 1965Water ShortageMajor disaster

New York also had 12 statewide declarations that did not name single counties.

Storm history since 1956

Tornado risk by county ›

The National Weather Service has logged 563 storm reports in Delaware County since 1956, with 14 deaths and 4 injuries and about $373 million in reported damage. The strongest on record here was an F3 tornado on May 31, 1998 near Deposit.

12tornadoes
108hail reports, largest 2.5 inches
331damaging thunderstorm winds
107floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
May 31, 1998F3Deposit0 / 0
Oct 1, 1986F2–0 / 0
Jun 21, 1990F1–0 / 0
Jun 26, 1998F1Colchester0 / 0
Sep 25, 2022EF1Beerston0 / 0

Most damaging storms

DateTypeNearDamage
Jun 27, 2006Flash FloodCountywide$250M
Jun 19, 2007Flash FloodColchester$30M
Sep 18, 2004Flash FloodCountywide$12M
Jun 27, 2006FloodWalton$10M
Jun 27, 2006FloodUnadilla$10M
Jul 23, 2008Flash FloodColchester$10M

Source: NOAA Storm Events Database, county-based reports through Jul 21, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Hurricanes and tropical storms

Hurricane risk by county ›

Since 1876, 1 hurricane and 6 tropical storms have passed within 65 miles of the center of Delaware County, 2 of them since 1950. The strongest was an unnamed hurricane in 1878, with top winds near 80 mph about 53 miles away.

1hurricanes
0major hurricanes (Category 3+)
6tropical storms
2020most recent: Isaias

Strongest storms nearby

DateStormStrengthClosest
Oct 23, 1878UnnamedCategory 1, 80 mph53 mi
Aug 29, 1893UnnamedTropical storm, 65 mph61 mi
Aug 4, 2020IsaiasTropical storm, 60 mph55 mi
Aug 29, 1949UnnamedTropical storm, 55 mph30 mi
Sep 6, 1979DavidTropical storm, 45 mph54 mi
Sep 18, 1876UnnamedTropical storm, 45 mph64 mi

Most recent storms

DateStormStrengthClosest
Aug 4, 2020IsaiasTropical storm, 60 mph55 mi
Sep 6, 1979DavidTropical storm, 45 mph54 mi
Aug 29, 1949UnnamedTropical storm, 55 mph30 mi
Aug 24, 1933UnnamedTropical storm, 40 mph65 mi
Aug 29, 1893UnnamedTropical storm, 65 mph61 mi
Oct 23, 1878UnnamedCategory 1, 80 mph53 mi

Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.

Flood insurance in Delaware County

Check your address flood zone ›
1.9%of homes have federal flood insurance (534 policies)
22.9%of homes in mapped high-risk flood zones are insured
$39.6 millionpaid on 1,291 flood claims since 1978
2006costliest year, with $18.9 million paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Delaware County

$183,100median home value (New York $423,800, US $332,700)
1972median year homes were built (New York 1959, US 1980)
61%of homes built before 1980, before many modern wind, quake and flood building rules
12.6%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 30,057 housing units.

Compare in New York

All 62 ›
Largest countiesOverall riskTop hazard
Kings CountyHighInland flooding
Queens CountyHighInland flooding
New York CountyHighInland flooding
Suffolk CountyHighInland flooding
Bronx CountyHighInland flooding
Nassau CountyHighInland flooding
Westchester CountyHighInland flooding
Erie CountyHighInland flooding

Neighboring counties

CountyOverall riskDeclarations
Broome CountyModerate26
Ulster CountyModerate33
Sullivan CountyLow31
Otsego CountyLow23
Wayne County, PALow23
Greene CountyLow25
Chenango CountyLow27
Schoharie CountyVery Low25

Common questions about Delaware County

What is the biggest natural hazard in Delaware County?

Inland flooding has the highest expected yearly losses in Delaware County, about $30.9 million a year in FEMA's estimate. Cold wave is second at $1.5 million.

How many federal disasters has Delaware County had?

Delaware County has been included in 35 federal disaster or emergency declarations for natural events since 1965, including 26 major disasters. The most recent was Remnants of Tropical Storm Debby in September 2024.

Is Delaware County a high-risk place to live?

Its overall rating is Relatively Moderate, 21st highest of 62 in New York. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Delaware County?

Standard home insurance does not cover flooding. About 1 in 53 homes in Delaware County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Delaware County had?

NOAA records list 12 tornadoes in Delaware County since 1950. The strongest was an F3 tornado on May 31, 1998 near Deposit. The weather service has also logged 108 hail reports and 107 floods here.

How many hurricanes have hit Delaware County?

NOAA's hurricane records show 1 hurricane and 6 tropical storms passing within 65 miles of the center of Delaware County. The strongest was an unnamed hurricane in 1878, with winds near 80 mph.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.