City vs city
North Sioux City vs Watertown, SD
Watertown currently scores 7 points higher overall than North Sioux City, 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
North Sioux City: 43/100 · Watertown: 50/100
Watertown is 7 points higher.
Flood
North Sioux City: 10/100 · Watertown: 79/100
Watertown is 69 points higher.
North Sioux City: FEMA NFHL flood zones: 3 features intersect this tile.
Watertown: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
North Sioux City: 20/100 · Watertown: 20/100
No gap.
North Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Watertown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
North Sioux City: 48/100 · Watertown: 42/100
North Sioux City is 6 points higher.
North Sioux City: Lightning exposure derived from ingested climatology tiles.
Watertown: Lightning exposure derived from ingested climatology tiles.
Tornado
North Sioux City: 54/100 · Watertown: 0/100
North Sioux City is 54 points higher.
North Sioux City: Tornado risk derived from NOAA SPC historical reports.
Watertown: Tornado risk derived from NOAA SPC historical reports.
Hail
North Sioux City: 90/100 · Watertown: 100/100
Watertown is 10 points higher.
North Sioux City: Hail risk derived from NOAA SPC historical reports.
Watertown: Hail risk derived from NOAA SPC historical reports.
Storm surge
North Sioux City: Unavailable · Watertown: Unavailable
A score difference cannot be calculated without both sources.
North Sioux City: Storm surge model is not available for this location yet.
Watertown: Storm surge model is not available for this location yet.
Wildfire
North Sioux City: 52/100 · Watertown: 38/100
North Sioux City is 14 points higher.
North Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Watertown: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
North Sioux City: 26/100 · Watertown: 21/100
North Sioux City is 5 points higher.
North Sioux City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Watertown: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.