THE TEN MOST SIGNIFICANT FLOOD EVENTS, RANKED BY NATIONAL FLOOD INSURANCE PROGRAM PAYOUTS (1)
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 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 Storm 
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, 
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 Insurance 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.