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Riverine Flooding Risk Rankings
US counties with the highest riverine flooding risk
| # | County | State | Score | Rating | Annual Loss |
|---|---|---|---|---|---|
| 1 | Los Angeles | CA | 100.0 | Very High | $2.8B |
| 2 | Harris | TX | 100.0 | Very High | $1.1B |
| 3 | Maricopa | AZ | 99.9 | Very High | $1.1B |
| 4 | Riverside | CA | 99.9 | Very High | $1.1B |
| 5 | Cook | IL | 99.9 | Very High | $1.1B |
| 6 | Orange | CA | 99.8 | Very High | $819.9M |
| 7 | San Bernardino | CA | 99.8 | Very High | $959.6M |
| 8 | Santa Clara | CA | 99.8 | Very High | $720.2M |
| 9 | Alameda | CA | 99.7 | Very High | $490.5M |
| 10 | San Diego | CA | 99.7 | Very High | $647.6M |
| 11 | Miami-Dade | FL | 99.7 | Very High | $355.8M |
| 12 | Bexar | TX | 99.7 | Very High | $364.8M |
| 13 | Clark | NV | 99.6 | Very High | $362.2M |
| 14 | Philadelphia | PA | 99.6 | Very High | $266.1M |
| 15 | Dallas | TX | 99.6 | Very High | $323.7M |
| 16 | Pima | AZ | 99.5 | Very High | $347.4M |
| 17 | Contra Costa | CA | 99.5 | Very High | $412.5M |
| 18 | King | WA | 99.5 | Very High | $416.9M |
| 19 | Broward | FL | 99.4 | Very High | $289.0M |
| 20 | Wayne | MI | 99.4 | Very High | $237.3M |
| 21 | Kings | NY | 99.4 | Very High | $181.2M |
| 22 | Ventura | CA | 99.3 | Very High | $312.8M |
| 23 | Honolulu | HI | 99.3 | Very High | $329.7M |
| 24 | Queens | NY | 99.3 | Very High | $185.3M |
| 25 | Sonoma | CA | 99.2 | Relatively High | $279.8M |
| 26 | New York | NY | 99.2 | Very High | $187.0M |
| 27 | Allegheny | PA | 99.2 | Very High | $295.0M |
| 28 | Jefferson | KY | 99.1 | Relatively High | $212.8M |
| 29 | St. Louis | MO | 99.1 | Relatively High | $240.3M |
| 30 | Tarrant | TX | 99.1 | Relatively High | $258.1M |
| 31 | Sacramento | CA | 99.0 | Relatively High | $215.7M |
| 32 | Erie | NY | 99.0 | Relatively High | $205.3M |
| 33 | Mecklenburg | NC | 99.0 | Relatively High | $256.4M |
| 34 | Capitol | CT | 99.0 | Relatively High | $240.5M |
| 35 | Palm Beach | FL | 98.9 | Relatively High | $178.9M |
| 36 | Hawaii | HI | 98.9 | Relatively High | $185.3M |
| 37 | Middlesex | NJ | 98.9 | Relatively High | $196.8M |
| 38 | Bergen | NJ | 98.8 | Relatively High | $216.8M |
| 39 | Essex | NJ | 98.8 | Relatively High | $149.3M |
| 40 | Franklin | OH | 98.8 | Relatively High | $209.6M |
| 41 | Fresno | CA | 98.7 | Relatively High | $166.1M |
| 42 | Cuyahoga | OH | 98.7 | Relatively High | $177.8M |
| 43 | Shelby | TN | 98.7 | Relatively High | $153.7M |
| 44 | San Francisco | CA | 98.6 | Relatively High | $177.7M |
| 45 | Santa Barbara | CA | 98.6 | Relatively High | $166.8M |
| 46 | Hudson | NJ | 98.6 | Relatively High | $128.3M |
| 47 | Kern | CA | 98.5 | Relatively High | $147.2M |
| 48 | Middlesex | MA | 98.5 | Relatively High | $224.4M |
| 49 | Bronx | NY | 98.5 | Relatively High | $100.5M |
| 50 | San Mateo | CA | 98.4 | Relatively High | $212.3M |