Hazards › Flood
Flood across the United States
183,559 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood. 2,823 counties have a flood page.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
By year
Seasonality
9,803Feb
9,825Mar
13,392Apr
15,599May
23,468Jun
27,685Jul
25,298Aug
20,838Sep
16,440Oct
9,004Nov
5,084Dec
7,123
States
| State | Events | Per 100 sq mi | Deaths |
|---|---|---|---|
| Texas | 15,832 | 6.1 | 595 |
| Missouri | 10,821 | 15.7 | 159 |
| Kentucky | 8,294 | 21.0 | 169 |
| Virginia | 8,165 | 20.7 | 64 |
| Iowa | 7,383 | 13.2 | 18 |
| California | 7,136 | 4.6 | 121 |
| Pennsylvania | 7,057 | 15.8 | 110 |
| New York | 6,836 | 14.5 | 117 |
| Ohio | 6,794 | 16.6 | 74 |
| Illinois | 6,507 | 11.7 | 61 |
| Indiana | 6,083 | 17.0 | 83 |
| Arkansas | 5,685 | 10.9 | 92 |
| North Carolina | 5,375 | 11.1 | 186 |
| Kansas | 4,604 | 5.6 | 32 |
| Tennessee | 4,414 | 10.7 | 121 |
| Oklahoma | 4,346 | 6.3 | 91 |
| West Virginia | 4,166 | 17.3 | 85 |
| Arizona | 3,896 | 3.4 | 127 |
| Mississippi | 3,812 | 8.1 | 26 |
| New Jersey | 3,787 | 51.5 | 61 |
| Maryland | 3,545 | 36.5 | 24 |
| South Dakota | 3,390 | 4.5 | 10 |
| Alabama | 3,380 | 6.7 | 38 |
| Florida | 3,375 | 6.3 | 22 |
| Louisiana | 3,330 | 7.7 | 39 |
| Georgia | 3,250 | 5.6 | 18 |
| Minnesota | 2,680 | 3.4 | 23 |
| Wisconsin | 2,580 | 4.8 | 30 |
| South Carolina | 2,557 | 8.5 | 31 |
| Nebraska | 2,363 | 3.1 | 13 |
| Colorado | 1,956 | 1.9 | 47 |
| Massachusetts | 1,890 | 24.2 | 3 |
| New Mexico | 1,880 | 1.5 | 51 |
| Maine | 1,609 | 5.2 | 8 |
| Utah | 1,399 | 1.7 | 49 |
| Michigan | 1,305 | 2.3 | 12 |
| North Dakota | 1,221 | 1.8 | 16 |
| Montana | 1,175 | 0.8 | 9 |
| New Hampshire | 1,048 | 11.7 | 7 |
| Connecticut | 1,033 | 21.3 | 13 |
| Nevada | 918 | 0.8 | 15 |
| Vermont | 911 | 9.9 | 11 |
| Hawaii | 865 | 13.5 | 18 |
| Oregon | 846 | 0.9 | 24 |
| Washington | 832 | 1.3 | 12 |
| Idaho | 790 | 1.0 | 3 |
| Alaska | 648 | 0.1 | 12 |
| Delaware | 615 | 31.6 | 4 |
| Wyoming | 568 | 0.6 | 6 |
| Rhode Island | 340 | 32.9 | 1 |
| District of Columbia | 267 | 437.7 | — |
Counties with the most recorded events
Most per 100 square miles (25+ events)
| County | Per 100 sq mi | Events |
|---|---|---|
| District of Columbia, DC | 436.8 | 267 |
| Alexandria city, VA | 421.8 | 63 |
| Hudson County, NJ | 339.9 | 157 |
| New York County, NY | 313.4 | 71 |
| Galax city, VA | 303.5 | 25 |
| Arlington County, VA | 277.0 | 72 |
| San Francisco County, CA | 240.9 | 113 |
| Norfolk city, VA | 221.5 | 118 |
| Philadelphia County, PA | 213.6 | 287 |
| Bronx County, NY | 213.4 | 90 |
| Suffolk County, MA | 194.0 | 113 |
| Union County, NJ | 187.8 | 193 |
| Petersburg city, VA | 180.5 | 41 |
| Queens County, NY | 171.1 | 186 |
| Bergen County, NJ | 167.5 | 390 |
| Roanoke city, VA | 162.3 | 69 |
| Delaware County, PA | 140.4 | 258 |
| Richmond city, VA | 140.2 | 84 |
| Essex County, NJ | 137.2 | 173 |
| Fairfax County, VA | 132.2 | 517 |
| Orleans Parish, LA | 126.3 | 214 |
| Bristol County, RI | 120.2 | 29 |
| Kings County, NY | 119.6 | 83 |
| Richmond County, NY | 114.7 | 66 |
| Portsmouth city, VA | 114.1 | 38 |
| Alexander County, IL | 102.8 | 242 |
| New Hanover County, NC | 92.6 | 178 |
| Passaic County, NJ | 91.4 | 170 |
| Montgomery County, MD | 90.0 | 444 |
| Greene County, VA | 89.1 | 139 |
Counts reflect reporting density as well as weather. County figures include zone-recorded events whose forecast zone is named for the county; state figures include all zone-recorded events.