Riskiest Counties for Riverine Flood

Ranked by FEMA National Risk Index riverine flood hazard score · code IFLD

County Rankings

#CountyStateRiverine Flood ScoreRatingAnn. Freq.Ann. Loss
1Los Angeles CountyCA
100.0
Very High 3.96 / yr$2.81B
2Harris CountyTX
100.0
Very High 5.14 / yr$1.12B
3Cook CountyIL
99.9
Very High 5.89 / yr$1.10B
4Maricopa CountyAZ
99.9
Very High 8.46 / yr$1.12B
5Riverside CountyCA
99.9
Very High 7.36 / yr$1.13B
6Orange CountyCA
99.8
Very High 2.89 / yr$820M
7San Bernardino CountyCA
99.8
Very High 12.96 / yr$960M
8Santa Clara CountyCA
99.8
Very High 2.07 / yr$720M
9Alameda CountyCA
99.7
Very High 2.25 / yr$491M
10San Diego CountyCA
99.7
Very High 7.89 / yr$648M
11Miami-Dade CountyFL
99.7
Very High 4.00 / yr$356M
12Bexar CountyTX
99.7
Very High 7.46 / yr$365M
13Dallas CountyTX
99.6
Very High 4.61 / yr$324M
14Clark CountyNV
99.6
Very High 7.25 / yr$362M
15Philadelphia CountyPA
99.6
Very High 5.82 / yr$266M
16King CountyWA
99.5
Very High 0.29 / yr$417M
17Contra Costa CountyCA
99.5
Very High 1.18 / yr$412M
18Pima CountyAZ
99.5
Very High 12.82 / yr$347M
19Broward CountyFL
99.4
Very High 2.46 / yr$289M
20Kings CountyNY
99.4
Very High 1.96 / yr$181M
21Wayne CountyMI
99.4
Very High 3.14 / yr$237M
22Ventura CountyCA
99.3
Very High 1.93 / yr$313M
23Queens CountyNY
99.3
Very High 3.29 / yr$185M
24Honolulu CountyHI
99.3
Very High 5.93 / yr$330M
25Sonoma CountyCA
99.2
High 2.54 / yr$280M

Showing the top 25 seeded counties for riverine flood risk.