Coastal Flood Risk in Florida

All Florida counties ranked by FEMA National Risk Index coastal flood score

Coastal Flood risk — seawater inundation from storm surge, high tides, and rising sea levels — is rated for 47 of 67 Florida counties in FEMA's National Risk Index. Miami-Dade County carries the state's highest coastal flood score at 99.6, with $23M in expected annual coastal flood losses.

16 Florida counties are rated High or Very High for coastal flood, and expected annual losses from coastal flood total roughly $201M statewide. The full ranking below links to each county's complete 18-hazard risk profile.

County Rankings — Coastal Flood

#CountyCoastal Flood ScoreRatingAnn. Freq.Ann. Loss
1 Miami-Dade County
99.6
Very High 2.25 / yr $23M
2 Pinellas County
99.2
Very High 3.69 / yr $25M
3 Monroe County
98.8
Very High 2.28 / yr $21M
4 Manatee County
98.0
Very High 3.69 / yr $17M
5 Lee County
97.4
Very High 2.92 / yr $14M
6 Broward County
97.0
Very High 2.62 / yr $14M
7 Collier County
95.2
Very High 3.30 / yr $9M
8 Sarasota County
93.6
High 3.65 / yr $7M
9 Palm Beach County
93.4
High 2.91 / yr $8M
10 Citrus County
92.6
High 3.67 / yr $5M
11 Hillsborough County
92.4
High 3.69 / yr $8M
12 Duval County
91.0
High 2.78 / yr $7M
13 Pasco County
90.8
High 3.69 / yr $6M
14 Charlotte County
90.4
High 3.22 / yr $4M
15 St. Johns County
89.0
High 2.92 / yr $8M
16 Volusia County
85.0
High 2.06 / yr $3M
17 Brevard County
82.0
Medium 1.05 / yr $3M
18 Franklin County
77.4
Medium 3.91 / yr $1M
19 Bay County
77.2
Medium 3.76 / yr $2M
20 Escambia County
76.8
Medium 3.64 / yr $2M
21 Taylor County
76.6
Medium 3.75 / yr $1M
22 Nassau County
75.8
Medium 3.51 / yr $2M
23 Hernando County
74.2
Medium 3.69 / yr $1M
24 Dixie County
73.6
Medium 3.72 / yr $1M
25 Martin County
73.0
Medium 1.13 / yr $1M
26 Levy County
72.6
Medium 3.75 / yr $792K
27 Santa Rosa County
70.8
Medium 3.76 / yr $1M
28 Indian River County
69.0
Medium 1.02 / yr $835K
29 Flagler County
67.6
Medium 1.36 / yr $790K
30 St. Lucie County
65.2
Medium 1.11 / yr $703K
31 Okaloosa County
62.6
Medium 1.95 / yr $730K
32 Walton County
62.2
Medium 2.06 / yr $605K
33 Gulf County
61.6
Medium 3.76 / yr $517K
34 Wakulla County
61.2
Medium 4.54 / yr $767K
35 Putnam County
60.4
Low 0.81 / yr $365K
36 Clay County
57.0
Low 0.90 / yr $464K
37 Jefferson County
39.4
Very Low 3.76 / yr $9K
38 Lake County
35.4
Very Low 0.98 / yr $8K
39 DeSoto County
33.4
Very Low 0.01 / yr $4K
40 Liberty County
28.6
Very Low 0.01 / yr $3K
41 Gilchrist County
25.8
Very Low 0.01 / yr $2K
42 Hendry County
25.6
Very Low 0.01 / yr $1K
43 Marion County
24.6
Very Low 0.98 / yr $1K
44 Leon County
23.4
Very Low 0.01 / yr $1K
45 Washington County
22.4
Very Low 0.01 / yr $707
46 Lafayette County
22.0
Very Low 0.01 / yr $684
47 Calhoun County
21.2
Very Low 0.01 / yr $388

47 Florida counties with measurable coastal flood risk. See the national coastal flood ranking or all Florida counties by overall risk.

Frequently Asked Questions

Which Florida county has the highest coastal flood risk?

Miami-Dade County has the highest FEMA coastal flood risk score in Florida at 99.6 (Very High), with $23M in expected annual losses and about 2.25 events per year.

How many Florida counties face significant coastal flood risk?

47 Florida counties record measurable coastal flood risk in FEMA's National Risk Index; 16 of them are rated High or Very High.

Other Hazards in Florida