City vs city
Des Moines vs Ottumwa, IA
Des Moines currently scores 5 points higher overall than Ottumwa, with the largest gap in flood.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality uses an ingested EPA AirNow snapshot and may not reflect current conditions; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
Des Moines: 46/100 · Ottumwa: 41/100
Des Moines is 5 points higher.
Flood
Des Moines: 73/100 · Ottumwa: 57/100
Des Moines is 16 points higher.
Des Moines: FEMA NFHL flood zones: 10 features intersect this tile.
Ottumwa: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Des Moines: 18/100 · Ottumwa: 17/100
Des Moines is 1 points higher.
Des Moines: Wind exposure derived from ingested design wind / climatology tiles.
Ottumwa: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Des Moines: 58/100 · Ottumwa: 54/100
Des Moines is 4 points higher.
Des Moines: Lightning exposure derived from ingested climatology tiles.
Ottumwa: Lightning exposure derived from ingested climatology tiles.
Tornado
Des Moines: 12/100 · Ottumwa: 8/100
Des Moines is 4 points higher.
Des Moines: Tornado risk derived from NOAA SPC historical reports.
Ottumwa: Tornado risk derived from NOAA SPC historical reports.
Hail
Des Moines: 100/100 · Ottumwa: 89/100
Des Moines is 11 points higher.
Des Moines: Hail risk derived from NOAA SPC historical reports.
Ottumwa: Hail risk derived from NOAA SPC historical reports.
Storm surge
Des Moines: Unavailable · Ottumwa: Unavailable
A score difference cannot be calculated without both sources.
Des Moines: Storm surge model is not available for this location yet.
Ottumwa: Storm surge model is not available for this location yet.
Wildfire
Des Moines: 31/100 · Ottumwa: 38/100
Ottumwa is 7 points higher.
Des Moines: Wildfire exposure derived from ingested fire potential tiles.
Ottumwa: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Des Moines: 32/100 · Ottumwa: 21/100
Des Moines is 11 points higher.
Des Moines: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Ottumwa: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.