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Rensselaer County, New York Flood Zones

Check an Address in Rensselaer County

Enter any address in Rensselaer County, New York to see its FEMA flood zone

The Flooding Character of Rensselaer County

Flash flooding from thunderstorms is the most frequent type of flood event in Rensselaer County, with 60 occurrences in the last 30 years. Other flood types include general flooding (57 events), tropical storms (2 events), and storm surge/tide (1 event). Recent events include heavy rainfall in July 2023, which brought 3 to 6 inches of rain to parts of eastern New York, and widespread moderate to heavy rainfall in December 2023 that caused both areal and river flooding, with some rivers remaining high for several days.

National Flood Insurance Program (NFIP) claims data shows that properties in Zone A have the highest number of claims (290) with an average payout of $11,346 and an average water depth of 6.1 feet. Properties in Zone X_SHADED have a higher average payout ($35,620) and average water depth (4.2 feet) despite fewer claims (24). Homeowners in areas designated as Zone A, Zone X_SHADED, and those near rivers or without a Base Flood Elevation (BFE) should pay particular attention to flood risk.

Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.

Read First-Hand Flood Stories from Rensselaer County

61 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.

Read New York flood stories →

Flood Risk Data for Rensselaer County

Rensselaer County, New York has recorded 120 flood-related events since 1996 according to NOAA's Storm Events Database, including 60 flash floods and 57 river or area floods. The county has received 29 federal disaster declarations, 2 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.

Rensselaer County Disaster History

FEMA Disaster Declarations (1973–2021)

Disaster Declarations
29
Flood/Coastal Disasters
2
Hurricane Disasters
3
Latest Disaster
Hurricane Henri (2021-08-21)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Rensselaer County

DeclarationTypeDate
Hurricane HenriHurricaneAug 21, 2021
Covid-19BiologicalJan 20, 2020
Covid-19 PandemicBiologicalJan 20, 2020
Severe Winter Storm And SnowstormSnowstormMar 14, 2017
Hurricane SandyHurricaneOct 27, 2012
Remnants Of Tropical Storm LeeSevere StormSep 7, 2011
Hurricane IreneHurricaneAug 26, 2011
Severe Winter Storm And SnowstormSevere StormDec 26, 2010
Severe Winter StormSevere StormDec 11, 2008
Severe Storms And FloodingSevere StormJun 26, 2006

Recorded Flood Events in Rensselaer County

NOAA Storm Events Database (1996–2025)

Total Flood Events
120
River/Area Floods
57
Flash Floods
60
Coastal/Storm Surge
1
Hurricanes/Tropical Storms
2
Total Property Damage
$16.6M
Flood Injuries
2

Source: NOAA National Weather Service Storm Events Database.

Recent Flood Events in Rensselaer County

TypeDateDamage
FloodDec 18, 202375.00K
FloodDec 18, 20232.00K
FloodJul 16, 20235.00K
FloodJan 13, 202350.00K
Flash FloodJul 9, 20235.00K
FloodDec 23, 202230.00K
FloodApr 7, 20220.00K
FloodJul 14, 20210.00K
Flash FloodJul 14, 2021500.00K
Flash FloodJul 14, 2021200.00K

Rensselaer County Flood History

Flood — Dec 18, 2023

An area of low pressure tracked up the East Coast and intensified in the process as it brought widespread moderate to heavy rainfall across eastern New York on December 18, 2023. Rainfall totals were between 2 and 5 inches with the highest amounts across the eastern Catskills. This rain led to both areal and river flooding across the region. Some rivers didn't recede until December 22.||States ...

Flood — Jul 16, 2023

A couple of rounds of showers and thunderstorms resulted in wind damage and flash flooding over parts of eastern New York on July 16, 2023. One round occurred during the early morning hours which resulted in some downed trees and wires as well as some street flooding and washouts, primarily across the mid-Hudson Valley. The second round moved through during the afternoon leading to some floodin...

Flood — Jan 13, 2023

Waves of rainfall, which at times were heavy, Thursday evening (January 12th) into Friday morning (January 13th) combined with runoff from southern Vermont may have been the cause of a culvert overflowing and collapsing in the town of Hoosick Falls.

Flash Flood — Jul 9, 2023

A strong upper-level system brought widespread rounds of showers and thunderstorms to eastern New York on July 9-11, 2023. The steadiest and heaviest rainfall occurred during the afternoon hours on July 9, the early morning hours on July 10 and during the evening hours on July 10 into the overnight hours on July 11. Rainfall totals varied greatly from region to region but the hardest hit areas ...

Flood — Dec 23, 2022

Two separate frontal systems merged to form a powerful winter storm over the Great Lakes from December 22 to December 24 bringing multiple hazards to the region including heavy rain, snow, strong winds and a very cold air mass in its wake.||Widespread rainfall amounts of 1 to 3 inches were observed with some localized amounts of 4 inches. The combination of the rain and snowmelt in some places ...

Source: NOAA National Weather Service Storm Events Database.

Rensselaer County NFIP Flood Insurance Claims

Total Claims Filed
379
Total Paid Out
$4.7M
Avg Claim
$18,546
Avg Water Depth
12.8 ft

Claims by Flood Zone

A Zones (High Risk)
290
X Shaded (500-yr)
24
X Unshaded (Low)
14

Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).

Flood Zone Types in Rensselaer County

FEMA assigns flood zone designations to areas in Rensselaer County, New York:

AE High Risk — 1% annual chance of flooding. Insurance required.

VE Very High Risk — Coastal flooding with wave action.

X (Shaded) Moderate Risk — 500-year floodplain.

X Low Risk — Outside major floodplains.

View all flood zone types →

Flood Insurance in Rensselaer County

Properties in Rensselaer County, New York that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.

Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.

Visit FloodSmart.gov to find an agent and get a quote.