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Florida inland flooding risk

67 counties scored 2 rated Very High

Miami-Dade County has the highest inland flooding risk in Florida, scoring 99.7 out of 100 — rated "Very High" by FEMA's National Risk Index. Recorded inland flooding events across Florida have increased 46% over the past five years compared to the prior five-year period.

# County NRI score Rating NOAA events
2016–2026
1 Miami-Dade County 99.7 Very High 137
2 Broward County 99.4 Very High 87
3 Palm Beach County 98.9 Relatively High 75
4 Orange County 98.4 Relatively High 11
5 Collier County 98.3 Relatively High 30
6 Hillsborough County 97.8 Relatively High 21
7 Duval County 97.6 Relatively High 90
8 Lee County 97.3 Relatively High 23
9 Pinellas County 96.9 Relatively High 8
10 Sarasota County 95.7 Relatively High 12
11 Pasco County 95.4 Relatively High 6
12 Volusia County 95.2 Relatively High 14
13 Brevard County 95 Relatively High 20
14 Polk County 94.6 Relatively High 0
15 Manatee County 93.5 Relatively High 11
16 Marion County 93 Relatively Moderate 17
17 Seminole County 92.7 Relatively Moderate 9
18 Lake County 92.3 Relatively Moderate 8
19 Osceola County 92.1 Relatively Moderate 6
20 Leon County 91.5 Relatively Moderate 74
21 St. Johns County 89.4 Relatively Moderate 29
22 St. Lucie County 89.3 Relatively Moderate 7
23 Escambia County 88.7 Relatively Moderate 32
24 Alachua County 88.6 Relatively Moderate 20
25 Clay County 85.9 Relatively Moderate 16
26 Indian River County 85.9 Relatively Moderate 7
27 Hernando County 85.6 Relatively Moderate 3
28 Charlotte County 85.3 Relatively Moderate 0
29 Sumter County 84.8 Relatively Moderate 1
30 Martin County 83.3 Relatively Moderate 8
31 Citrus County 83.2 Relatively Moderate 1
32 Okaloosa County 80.4 Relatively Moderate 28
33 Okeechobee County 80.3 Relatively Moderate 2
34 Flagler County 79.2 Relatively Moderate 31
35 Highlands County 78.4 Relatively Moderate 0
36 Putnam County 77.3 Relatively Moderate 16
37 Bay County 74.7 Relatively Moderate 129
38 Santa Rosa County 73.7 Relatively Moderate 31
39 Walton County 68.3 Relatively Low 53
40 Columbia County 68.2 Relatively Low 10
41 Hendry County 64.3 Relatively Low 4
42 Suwannee County 62.9 Relatively Low 4
43 Jackson County 60.9 Relatively Low 63
44 Nassau County 59 Relatively Low 10
45 Gadsden County 57.7 Relatively Low 12
46 Levy County 51.3 Relatively Low 1
47 DeSoto County 50.5 Relatively Low 1
48 Taylor County 46.8 Relatively Low 16
49 Glades County 44.6 Relatively Low 3
50 Monroe County 42.9 Relatively Low 10
51 Washington County 35.7 Relatively Low 55
52 Wakulla County 33.6 Very Low 6
53 Madison County 33.3 Very Low 15
54 Calhoun County 32.2 Very Low 25
55 Gilchrist County 31.4 Very Low 2
56 Bradford County 30.6 Very Low 5
57 Dixie County 28.8 Very Low 11
58 Jefferson County 28.1 Very Low 10
59 Holmes County 26.5 Very Low 63
60 Hardee County 26.4 Very Low 6
61 Hamilton County 25.9 Very Low 4
62 Gulf County 25.2 Very Low 19
63 Baker County 22.7 Very Low 9
64 Franklin County 18.7 Very Low 14
65 Lafayette County 14.7 Very Low 8
66 Union County 11.1 Very Low 0
67 Liberty County 8.9 Very Low 9

Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.

Inland Flooding risk nationally:

Top 50 US counties

Other hazard risks in Florida:

WildfireCoastal FloodingEarthquakeHeat WaveTornadoHurricaneHailStrong WindWinter WeatherIce StormCold WaveLightningDroughtLandslideAvalancheTsunamiVolcanic Activity

Frequently asked questions

What is the highest inland flooding risk county in Florida?

Miami-Dade County, FL has the highest inland flooding risk in Florida, with a FEMA National Risk Index score of 99.7 out of 100 (rated "Very High").

How many counties in Florida are rated Very High for inland flooding risk?

2 of 67 scored Florida counties are rated "Very High" for inland flooding risk by FEMA's National Risk Index.

What causes inland flooding risk in Florida?

Inland flooding covers riverine and surface (pluvial) flooding — the most common and costly natural disaster type in the US. High scores appear across river floodplains in the Midwest, South, and Mid-Atlantic, where legacy development in flood-prone areas and aging stormwater infrastructure concentrate risk.