Natural disaster risk in Monona County, Iowa
Iowa · population 8,738 · FIPS 19133
Overall: very low risk
Monona County has a composite risk score of 25.1 out of 100 — higher than 25% of US counties. It ranks 75 of 99 in Iowa (1 = highest risk). Its highest-rated hazards are drought, hail, landslide.
Drought now: No, but abnormally dry (D0)
No drought, but abnormally dry. On the U.S. Drought Monitor map valid 13 October 2026, 0.82% of Monona County is D0 Abnormally Dry and none of it is in drought (D1 to D4). Some of it has been abnormally dry or worse for 24 weeks in a row.
Drought in Monona County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Very low 25.1 |
| Expected annual loss About $8.7 million a year, on average, across all 18 hazards. |
Very low 29.6 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Relatively low 36.8 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Very high 82 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Monona County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Drought | Relatively moderate 89 |
| Hail | Relatively moderate 82 |
| Landslide | Relatively low 76 |
| Wildfire | Relatively low 63 |
| Tornado | Relatively low 57 |
| Ice storm | Relatively low 43 |
| Strong wind | Relatively low 38 |
| Cold wave | Relatively low 33 |
| Heat wave | Very low 31 |
| Inland (riverine) flooding | Very low 25 |
| Earthquake | Very low 14 |
| Lightning | Very low 11 |
| Winter weather | Very low 10 |
| Avalanche | Not applicable |
| Coastal flooding | Not applicable |
| Hurricane | No rating |
| Tsunami | Not applicable |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Monona County
Federal declarations that designated Monona County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. Monona County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4870-IA (Severe Winter Storm), declared 21 May 2025.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4870-IA | Major disaster | Severe Winter Storm | 21 May 2025 | No |
| DR-4796-IA | Major disaster | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes | 24 Jun 2024 | Yes |
All FEMA declarations in Iowa, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in Monona County, Iowa?
FEMA's National Risk Index rates the overall risk in Monona County as very low, with a score of 25.1 out of 100 (higher than 25% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Monona County?
The hazards rated highest for Monona County are drought (relatively moderate), hail (relatively moderate), landslide (relatively low).
What is the flood risk in Monona County?
FEMA rates inland (river and rain) flooding risk in Monona County as very low. For a specific property, check the FEMA flood map and your local floodplain office.
Has Monona County had a FEMA disaster declaration?
Yes. Monona County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4870-IA (Severe Winter Storm), declared 21 May 2025.
Is Monona County in a drought?
No drought, but abnormally dry. On the U.S. Drought Monitor map valid 13 October 2026, 0.82% of Monona County is D0 Abnormally Dry and none of it is in drought (D1 to D4). Some of it has been abnormally dry or worse for 24 weeks in a row.
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