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Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Number of
paid losses		 Amount paid
($ millions)
when occurred		 Amount paid
($ millions)
in 2024 dollars		 Average paid loss
in 2024 dollars
1 Aug. 2005 Hurricane Katrina 168,200 $16,330Ìý $26,247Ìý $156,046Ìý
2 Oct. 2012 Superstorm Sandy 132,800 8,967 12,236 92,139Ìý
3 Sep. 2017 Hurricane Harvey 77,100 9,015 11,591 150,337Ìý
4 Sep. 2022 Hurricane Ian 48,000 4,300 4,555 94,896Ìý
5 Sep. 2008 Hurricane Ike 46,900 2,711 3,911 83,390Ìý
6 Aug. 2016 Louisiana severe storms and flooding 27,600 2,522 3,305 119,746Ìý
7 Sep. 2004 Hurricane Ivan 31,000 1,671 2,778 89,613Ìý
8 May 2001 Tropical Storm Allison 30,900 1,110 1,968 63,689Ìý
9 Aug. 2011 Hurricane Irene 43,800 1,344 1,873 42,763Ìý
10 Sep. 2024 Hurricane Helene 43,700 1,779 1,779 40,709Ìý

(1) Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses, since 1978.Ìý As of January 2025.

Source: Federal Emergency Management Agency (FEMA) National Flood ÐÓ°ÉÔ­´´ Program (NFIP) data; analysis courtesy of Aon.

 

Archived Tables

THE TEN MOST SIGNIFICANT FLOOD EVENTS, RANKED BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Event Location Date Number of
Ìýpaid losses		 Amount paid
($ millions)		 Average
paid loss
1 Hurricane Katrina AL, FL, GA, LA, MS, TN Aug. 2005 166,792 $16,075 $96,378
2 Hurricane Ike AR, IL, IN, KY, LA, MO,
OH, PA, TX		 Sep. 2008 45,244 2,468 54,555
3 Hurricane Ivan AL, DE, FL, GA, LA,
MD, MS, NJ, NY, NC,
OH, PA, TN, VA, WV		 Sep. 2004 27,599 1,576 57,091
4 Tropical StormÌý
Allison		 FL, LA, MS, NJ, PA, TX Jun. 2001 30,662 1,104 35,998
5 Louisiana flood LA May 1995 31,343 585 18,667
6 Hurricane Isabel DE, MD, NJ, NY,
NC, PA, VA, WV		 Sep. 2003 19,853 492 24,774
7 Hurricane Rita AL, AR, FL, LA,
MS, TN, TX		 Sep. 2005 9,480 465 49,058
8 Hurricane Floyd CT, DE, FL, GA, MA, ME,Ìý
MD, NH, NJ, NC,
PA, SC, VA, VT		 Sep. 1999 20,439 462 22,617
9 Hurricane Opal AL, NC, PR, SC, TN Oct. 1995 10,343 406 39,208
10 Hurricane Hugo GA, NC, PR, SC, VA,
U.S. Virgin Islands		 Sep. 1989 12,843 376 29,315

(1) Includes events from 1978 to June 30, 2009. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Securiity, Federal Emergency Management Agency.

 
THE TEN MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Event Location Date Number of paid losses Amount paid ($ millions) Average paid loss
1 Hurricane Katrina AL, FL, GA, LA, MS, TN Aug. 2005 167,397 $16,208 $96,821
2 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX Sep. 2008 46,316 2,642 57,033
3 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ,
NY, NC, OH, PA, TN, VA, WV		 Sep. 2004 27,647 1,586 57,371
4 Tropical StormÌýAllison FL, LA, MS, NJ, PA, TX Jun. 2001 30,663 1,104 36,000
5 Louisiana flood LA May 1995 31,343 585 18,667
6 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV Sep. 2003 19,864 493 24,825
7 Hurricane Rita AL, AR, FL, LA, MS, TN, TX Sep. 2005 9,514 472 49,562
8 Hurricane Floyd CT, DE, FL, GA, MA, ME,ÌýMD, NH, NJ, NC, PA, SC, VA, VT Sep. 1999 20,438 462 22,618
9 Hurricane Opal AL, NC, PR, SC, TN Oct. 1995 10,343 406 39,208
10 Hurricane Hugo GA, NC, PR, SC, VA, U.S. Virgin Islands Sep. 1989 12,840 376 29,317

(1) Includes events from 1978 to July 31, 2011. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency.

 
THE TEN MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,679 $16,262 $96,984
2 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,389 2,661 57,355
3 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 27,653 1,587 57,395
4 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH, NJ, NY, PA, RI, VA, VT 43,585 1,279 29,336
5 Jun. 2001 Tropical StormÌýAllison FL, LA, MS, NJ, PA, TX 30,663 1,104 36,000
6 May 1995 Louisiana flood LA 31,343 585 18,667
7 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,868 493 24,832
8 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,509 472 49,660
9 Sep. 1999 Hurricane Floyd CT, DE, FL, GA, MA, ME, MD, NH, NJ, NC, PA, SC, VA, VT 20,438 462 22,618
10 Sep. 2011 Tropical Storm Lee PA, NY 9,718 435 44,764

(1) Includes events from 1978 to July 31, 2012. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency.

 
THE TEN MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of paid losses Amount paid ($ millions) Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,730 $16,277 $97,046
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH, NJ, NY, OH, PA, RI, VA, VT, WV 127,418 7,298 57,277
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,461 2,670 57,466
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY, NC, OH, PA, TN, VA, WV 28,259 1,607 56,880
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,031 1,319 29,946
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,663 1,104 36,000
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 11,924 537 45,032
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,868 493 24,833
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,508 473 49,698

(1) Includes events from 1978 to August 31, 2013, as of October 31, 2013. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
THE TEN MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,805 $16,294 $97,100
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 128,186 7,753 60,484
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,522 2,679 57,581
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,264 1,608 56,897
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,147 1,330 30,126
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,778 1,106 35,931
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 11,966 543 45,408
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,868 493 24,833
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,519 474 49,765

(1) Includes events from 1978 to August 31, 2014, as of November 3, 2014. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
THE TEN MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,940 $16,311 $97,126
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 128,830 7,870 61,089
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,555 2,683 57,620
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ,
NY, NC, OH, PA, TN, VA, WV		 28,282 1,611 56,945
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC,
NH, NJ, NY, PA, RI, VA, VT		 44,207 1,335 30,198
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,781 1,106 35,946
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 11,985 547 45,620
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,919 498 25,005
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,527 474 49,805

(1) Includes events from 1978 to January 31, 2015, as of March 13, 2015. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
TOP 10 MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,968 $16,315 $97,133
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 129,090 7,915 61,310
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,586 2,688 57,707
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY, NC, OH, PA, TN, VA, WV 28,289 1,611 56,959
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,228 1,337 30,226
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,784 1,107 35,955
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 11,993 548 45,704
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,930 500 25,068
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,526 474 49,811

(1) Includes events from 1978 to April 30, 2015, as of June 22, 2015. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses.
Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
TOP 10 MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,971 $16,316 $97,134
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 129,235 7,946 61,482
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,589 2,689 57,713
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,290 1,612 56,964
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,228 1,337 30,226
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,784 1,107 35,955
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 11,992 548 45,728
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,931 500 25,072
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,528 475 49,820

(1) Includes events from 1978 to June 30, 2015, as of August 21, 2015. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
TOP 10 MOST SIGNIFICANT FLOOD EVENTS BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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Rank Date Event Location Number of paid losses Amount paid ($ millions) Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,970 $16,317 $97,140
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 129,360 7,996 61,809
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,593 2,690 57,730
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ,
NY, NC, OH, PA, TN, VA, WV		 28,294 1,612 56,977
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,244 1,338 30,242
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,786 1,107 35,958
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 11,995 549 45,780
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,938 500 25,091
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,528 475 49,820

(1) Includes events from 1978 to August 31, 2015, as of October 15, 2015. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number
of paid
losses		 Amount
paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,984 $16,318 $97,142
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 130,214 8,249 63,352
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,660 2,697 57,798
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,297 1,612 56,974
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,266 1,340 30,270
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 12,039 554 46,026
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,938 500 25,091
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,529 475 49,821

(1) Includes events from 1978 to April 30, 2016, as of June 14, 2016. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,985 $16,318 $97,140
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 130,352 8,309 63,745
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,658 2,697 57,796
4 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,297 1,612 56,974
5 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,271 1,340 30,278
6 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
7 May 1995 Louisiana Flood LA 31,343 585 18,667
8 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 12,041 555 46,073
9 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,938 500 25,091
10 Sep. 2005 Hurricane Rita AL, AR, FL, LA, MS, TN, TX 9,529 475 49,821

(1) Includes events from 1978 to June 30, 2016, as of September 9, 2016. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,984 $16,318 $97,141
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 130,622 8,403 64,331
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,664 2,697 57,798
4 Aug. 2016 Louisiana severe storms
and flooding		 LAÌý 21,720 1,738 80,001
5 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,297 1,612 56,974
6 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,282 1,342 30,301
7 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
8 May 1995 Louisiana Flood LA 31,343 585 18,667
9 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 12,048 556 46,120
10 Sep. 2003 Hurricane Isabel DE, MD, NJ, NY, NC, PA, VA, WV 19,939 500 25,090

(1) Includes events from 1978 to November 30, 2016, as of January 18, 2017. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of paid losses Amount paid ($ millions) Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 167,995 $16,320 $97,144
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 131,502 8,596 65,370
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,679 2,699 57,826
4 Aug. 2016 Louisiana severe
storms and flooding		 LA 26,949 2,407 89,325
5 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ,
NY, NC, OH, PA, TN, VA, WV		 28,298 1,612 56,973
6 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,287 1,343 30,333
7 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
8 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,193 619 38,217
9 May 1995 Louisiana flood LA 31,343 585 18,667
10 Aug. 2012 Tropical Storm Isaac AL, FL, LA, MS 12,069 558 46,227

(1) Includes events from 1978 to May 31, 2016, as of August 18, 2017. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of paid losses Amount paid ($ millions) Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 168,019 $16,323 $97,147
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 131,616 8,627 65,547
3 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,687 2,700 57,826
4 Aug. 2016 Louisiana severe storms and flooding LA 27,044 2,427 89,734
5 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,300 1,612 56,974
6 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,292 1,344 30,347
7 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
8 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,359 630 38,488
9 May 1995 Louisiana flood LA 31,343 585 18,667
10 Aug. 2012 Hurricane Isaac AL, FL, LA, MS 12,074 558 46,248

(1) Includes events from 1978 to July 31, 2017, as of October 17, 2017. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of paid losses Amount paid ($ millions) Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 166,788 $16,258 $97,475
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 131,863 8,703 65,997
3 Aug. 2017 Hurricane Harvey AL, AR, FL, GA, KY, LA, MS, NC, TX 74,065 8,367 112,964
4 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,683 2,700 57,837
5 Aug. 2016 Louisiana severe storms and flooding LA 27,024 2,452 90,725
6 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,153 1,607 57,097
7 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,311 1,346 30,366
8 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
9 Sep. 2017 Hurricane Irma FL, GA, SC 20,977 953 45,421
10 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,493 642 38,941

(1) Includes events from 1978 to February 28, 2018, as of April 30, 2018. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 166,790 $16,258 $97,475
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 132,036 8,749 66,266
3 Aug. 2017 Hurricane Harvey AL, AR, FL, GA, KY, LA, MS, NC, TX 75,749 8,719 115,104
4 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,683 2,700 57,837
5 Aug. 2016 Louisiana severe storms
and flooding		 LAÌý 26,911 2,454 91,200
6 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,153 1,607 57,098
7 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,307 1,346 30,368
8 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
9 Sep. 2017 Hurricane Irma FL, GA, SC 21,749 1,022 46,989
10 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,542 649 39,217

(1) Includes events from 1978 to February 28, 2018, as of April 30, 2018. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 166,790 $16,258 $97,475
2 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 132,036 8,749 66,266
3 Sep. 2017 Hurricane Harvey AL, AR, FL, GA, KY, LA, MS, NC, TX 75,749 8,719 115,104
4 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,683 2,700 57,837
5 Aug. 2016 Louisiana severe
storms and flooding		 LAÌý 26,911 2,454 91,200
6 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,153 1,607 57,098
7 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,307 1,346 30,368
8 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
9 Sep. 2017 Hurricane Irma FL, GA, SC 21,749 1,022 46,989
10 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,542 649 39,217

(1) Includes events from 1978 to June 30, 2018, as of September 6, 2018. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 166,789 $16,258 $97,475
2 Sep. 2017 Hurricane Harvey AL, AR, FL, GA, KY, LA, MS, NC, TX 75,865 8,757 115,430
3 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 132,058 8,753 66,280
4 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,684 2,700 57,837
5 Aug. 2016 Louisiana severe storms
and flooding		 LA 26,909 2,456 91,260
6 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,153 1,607 57,098
7 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,306 1,345 30,366
8 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
9 Sep. 2017 Hurricane Irma FL, GA, SC 21,824 1,030 47,202
10 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,547 649 39,249

(1) Includes events from 1978 to July 31, 2018, as of October 5, 2018. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollar value at time of event.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of paid losses Amount paid ($ millions) Average paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 166,791 $16,258 $97,475
2 Sep. 2017 Hurricane Harvey AL, AR, FL, GA, KY, LA, MS, NC, TX ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 76,134 8,857 116,331
3 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 132,309 8,795 66,473
4 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 46,702 2,702 57,861
5 Aug. 2016 Louisiana severe storms
and flooding		 LAÌý ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 26,897 2,457 91,344
6 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 28,154 1,608 57,097
7 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 44,312 1,346 30,367
8 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 30,671 1,105 36,028
9 Sep. 2017 Hurricane Irma FL, GA, SC ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 21,903 1,044 47,649
10 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý 16,571 651 39,304

(1) Includes events from 1978 to October 31, 2018, as of January 31, 2019. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Location Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina AL, FL, GA, LA, MS, TN 166,790 $16,258 $97,474
2 Sep. 2017 Hurricane Harvey AL, AR, FL, GA, KY, LA, MS, NC, TX 76,257 8,909 116,823
3 Oct. 2012 Superstorm Sandy CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, OH, PA, RI, VA, VT, WV		 132,360 8,804 66,517
4 Sep. 2008 Hurricane Ike AR, IL, IN, KY, LA, MO, OH, PA, TX 46,701 2,702 57,866
5 Aug. 2016 Louisiana severe storms
and flooding		 LA 26,976 2,468 91,507
6 Sep. 2004 Hurricane Ivan AL, DE, FL, GA, LA, MD, MS, NJ, NY,
NC, OH, PA, TN, VA, WV		 28,154 1,608 57,097
7 Aug. 2011 Hurricane Irene CT, DC, DE, MA, MD, ME, NC, NH,
NJ, NY, PA, RI, VA, VT		 44,314 1,346 30,369
8 Jun. 2001 Tropical Storm Allison FL, LA, MS, NJ, PA, TX 30,671 1,105 36,028
9 Sep. 2017 Hurricane Irma FL, GA, SC 21,920 1,054 48,095
10 Oct. 2016 Hurricane Matthew FL, GA, NC, SC, VA 16,586 654 39,455

(1) Includes events from 1978 to January 31, 2019 as of December 23, 2019. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: U.S. Department of Homeland Security, Federal Emergency Management Agency; U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Hurricane Center.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina 168,256 $16,092Ìý $95,640Ìý
2 Sep. 2017 Hurricane Harvey 78,254 9,171 117,192
3 Oct. 2012 Superstorm Sandy 132,897 8,619 64,852
4 Sep. 2008 Hurricane Ike 47,247 2,670 56,517
5 Aug. 2016 Louisiana severe storms and flooding 27,737 2,536 91,432
6 Sep. 2004 Hurricane Ivan 31,981 1,688 52,791
7 Sep. 2021 Hurricane Ida 28,544 1,589 55,658
8 Sep. 2004 Hurricane Jeanne 31,486 1,513 48,062
9 Aug. 2011 Hurricane Irene 44,178 1,321 29,894
10 Sep. 2017 Hurricane Irma 23,119 1,153 49,884

(1) Includes events from 1978 to December 31, 2021 as of March 9, 2022. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: Federal Emergency Management Agency (FEMA) National Flood ÐÓ°ÉÔ­´´ Program (NFIP) data; analysis courtesy of Aon.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Number of
paid losses		 Amount paid
($ millions)		 Average
paid loss
1 Aug. 2005 Hurricane Katrina 168,200 $16,330 $97,087
2 Sep. 2017 Hurricane Harvey 77,100 9,015 116,926
3 Oct. 2012 Superstorm Sandy 132,800 8,885 66,905
4 Sep. 2022 Hurricane Ian 48,000 3,900 81,250
5 Sep. 2008 Hurricane Ike 46,900 2,711 57,804
6 Aug. 2016 Louisiana severe storms and flooding 27,600 2,522 91,377
7 Sep. 2004 Hurricane Ivan 31,000 1,671 53,903
8 Sep. 2021 Hurricane Ida 62,200 1,648 26,495
9 Sep. 2004 Hurricane Jeanne 36,000 1,460 40,556
10 Aug. 2011 Hurricane Irene 43,800 1,340 30,594

(1) Includes events from 1978 to December 31, 2022 as of May, 2022. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Stated in dollars when occurred.

Source: Federal Emergency Management Agency (FEMA) National Flood ÐÓ°ÉÔ­´´ Program (NFIP) data; analysis courtesy of Aon.

 
Top 10 Most Significant Flood Events By National Flood ÐÓ°ÉÔ­´´ Program Payouts (1)
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Rank Date Event Number of
paid losses		 Amount paid
($ millions)
when occurred		 Amount paid
($ millions)
in 2023 dollars		 Average paid loss
in 2023 dollars
1 Aug. 2005 Hurricane Katrina 168,200 $16,330 $25,592 $152,152
2 Oct. 2012 Superstorm Sandy 132,800 8,967 11,931 89,842
3 Sep. 2017 Hurricane Harvey 77,100 9,015 11,302 146,589
4 Sep. 2022 Hurricane Ian 48,000 4,300 4,441 92,521
5 Sep. 2008 Hurricane Ike 46,900 2,711 3,814 81,322
6 Aug. 2016 Louisiana severe storms and flooding 27,600 2,522 3,223 116,775
7 Sep. 2004 Hurricane Ivan 31,000 1,671 2,709 87,387
8 May 2001 Tropical Storm Allison 62,200 1,110 1,919 30,852
9 Aug. 2011 Hurricane Irene 43,800 1,344 1,826 41,689
10 Apr. 2017 Hurricane Irma 22,300 1,094 1,365 61,211

(1) Includes events from 1978 to December 31, 2023 as of January 2024. Defined by the National Flood ÐÓ°ÉÔ­´´ Program as an event that produces at least 1,500 paid losses. Ranked on Amount Paid in 2023 dollars.

Source: Federal Emergency Management Agency (FEMA) National Flood ÐÓ°ÉÔ­´´ Program (NFIP) data; analysis courtesy of Aon.