Drought Risk in Arizona
All Arizona counties ranked by FEMA National Risk Index drought score
Drought risk — extended dry periods that stress water supplies and agriculture — is rated for 15 of 15 Arizona counties in FEMA's National Risk Index. Maricopa County carries the state's highest drought score at 97.7, with $5M in expected annual drought losses.
2 Arizona counties are rated High or Very High for drought, and expected annual losses from drought total roughly $11M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Drought
| # | County | Drought Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Maricopa County | High | 62.54 / yr | $5M | |
| 2 | Pinal County | High | 55.02 / yr | $3M | |
| 3 | Cochise County | Medium | 76.45 / yr | $1M | |
| 4 | La Paz County | Medium | 66.04 / yr | $512K | |
| 5 | Graham County | Medium | 85.20 / yr | $677K | |
| 6 | Yuma County | Medium | 40.07 / yr | $513K | |
| 7 | Pima County | Medium | 57.26 / yr | $459K | |
| 8 | Santa Cruz County | Low | 55.56 / yr | $117K | |
| 9 | Navajo County | Low | 102.78 / yr | $92K | |
| 10 | Apache County | Low | 105.85 / yr | $79K | |
| 11 | Greenlee County | Low | 84.39 / yr | $31K | |
| 12 | Yavapai County | Very Low | 67.67 / yr | $17K | |
| 13 | Coconino County | Very Low | 96.46 / yr | $11K | |
| 14 | Gila County | Very Low | 67.26 / yr | $7K | |
| 15 | Mohave County | Very Low | 89.93 / yr | $3K |
15 Arizona counties with measurable drought risk. See the national drought ranking or all Arizona counties by overall risk.
Frequently Asked Questions
Which Arizona county has the highest drought risk?
Maricopa County has the highest FEMA drought risk score in Arizona at 97.7 (High), with $5M in expected annual losses and about 62.54 events per year.
How many Arizona counties face significant drought risk?
15 Arizona counties record measurable drought risk in FEMA's National Risk Index; 2 of them are rated High or Very High.