Riverine Flood Risk in New York
All New York counties ranked by FEMA National Risk Index riverine flood score
Riverine Flood risk — rivers and streams overflowing their banks after heavy rain or snowmelt — is rated for 62 of 62 New York counties in FEMA's National Risk Index. Kings County carries the state's highest riverine flood score at 99.4, with $181M in expected annual riverine flood losses.
11 New York counties are rated High or Very High for riverine flood, and expected annual losses from riverine flood total roughly $2.79B statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Riverine Flood
| # | County | Riverine Flood Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Kings County | Very High | 1.96 / yr | $181M | |
| 2 | Queens County | Very High | 3.29 / yr | $185M | |
| 3 | New York County | Very High | 2.00 / yr | $187M | |
| 4 | Erie County | High | 3.61 / yr | $205M | |
| 5 | Bronx County | High | 2.04 / yr | $100M | |
| 6 | Suffolk County | High | 3.54 / yr | $193M | |
| 7 | Nassau County | High | 3.29 / yr | $184M | |
| 8 | Westchester County | High | 4.14 / yr | $148M | |
| 9 | Monroe County | High | 2.18 / yr | $103M | |
| 10 | Onondaga County | High | 1.04 / yr | $77M | |
| 11 | Orange County | High | 2.75 / yr | $63M | |
| 12 | Broome County | Medium | 3.43 / yr | $49M | |
| 13 | Dutchess County | Medium | 1.93 / yr | $60M | |
| 14 | Richmond County | Medium | 1.93 / yr | $41M | |
| 15 | Ulster County | Medium | 3.64 / yr | $45M | |
| 16 | Rockland County | Medium | 2.93 / yr | $38M | |
| 17 | Chautauqua County | Medium | 2.68 / yr | $36M | |
| 18 | Delaware County | Medium | 2.29 / yr | $31M | |
| 19 | Oneida County | Medium | 2.29 / yr | $39M | |
| 20 | Niagara County | Medium | 1.32 / yr | $45M | |
| 21 | Albany County | Medium | 2.75 / yr | $43M | |
| 22 | Cattaraugus County | Medium | 2.18 / yr | $29M | |
| 23 | Rensselaer County | Medium | 2.29 / yr | $37M | |
| 24 | Steuben County | Medium | 2.11 / yr | $28M | |
| 25 | Sullivan County | Medium | 1.89 / yr | $27M | |
| 26 | Tompkins County | Medium | 0.89 / yr | $30M | |
| 27 | Otsego County | Medium | 1.50 / yr | $24M | |
| 28 | Chenango County | Medium | 2.36 / yr | $24M | |
| 29 | St. Lawrence County | Medium | 0.96 / yr | $22M | |
| 30 | Allegany County | Medium | 1.61 / yr | $24M | |
| 31 | Saratoga County | Medium | 2.93 / yr | $38M | |
| 32 | Schenectady County | Medium | 1.96 / yr | $24M | |
| 33 | Clinton County | Medium | 2.36 / yr | $22M | |
| 34 | Oswego County | Medium | 0.86 / yr | $22M | |
| 35 | Greene County | Medium | 1.93 / yr | $20M | |
| 36 | Montgomery County | Medium | 3.04 / yr | $16M | |
| 37 | Columbia County | Medium | 1.93 / yr | $17M | |
| 38 | Tioga County | Medium | 2.11 / yr | $17M | |
| 39 | Ontario County | Medium | 1.36 / yr | $21M | |
| 40 | Herkimer County | Medium | 3.50 / yr | $18M | |
| 41 | Cayuga County | Medium | 1.00 / yr | $19M | |
| 42 | Jefferson County | Medium | 0.89 / yr | $19M | |
| 43 | Madison County | Medium | 0.96 / yr | $19M | |
| 44 | Essex County | Medium | 3.07 / yr | $16M | |
| 45 | Livingston County | Medium | 1.32 / yr | $15M | |
| 46 | Wayne County | Low | 1.11 / yr | $14M | |
| 47 | Chemung County | Low | 1.43 / yr | $14M | |
| 48 | Cortland County | Low | 1.86 / yr | $14M | |
| 49 | Warren County | Low | 2.00 / yr | $16M | |
| 50 | Genesee County | Low | 0.93 / yr | $14M | |
| 51 | Washington County | Low | 2.29 / yr | $14M | |
| 52 | Yates County | Low | 0.71 / yr | $8M | |
| 53 | Franklin County | Low | 1.32 / yr | $11M | |
| 54 | Fulton County | Low | 1.14 / yr | $12M | |
| 55 | Schoharie County | Low | 1.82 / yr | $11M | |
| 56 | Wyoming County | Low | 1.00 / yr | $12M | |
| 57 | Seneca County | Low | 0.54 / yr | $8M | |
| 58 | Putnam County | Low | 0.86 / yr | $14M | |
| 59 | Lewis County | Low | 1.04 / yr | $7M | |
| 60 | Hamilton County | Low | 1.04 / yr | $5M | |
| 61 | Orleans County | Low | 0.54 / yr | $5M | |
| 62 | Schuyler County | Low | 0.64 / yr | $4M |
62 New York counties with measurable riverine flood risk. See the national riverine flood ranking or all New York counties by overall risk.
Frequently Asked Questions
Which New York county has the highest riverine flood risk?
Kings County has the highest FEMA riverine flood risk score in New York at 99.4 (Very High), with $181M in expected annual losses and about 1.96 events per year.
How many New York counties face significant riverine flood risk?
62 New York counties record measurable riverine flood risk in FEMA's National Risk Index; 11 of them are rated High or Very High.