City vs city
Oldham vs Watertown, SD
Watertown currently scores 19 points higher overall than Oldham, 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 is a current EPA AirNow signal; 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
Oldham: 31/100 · Watertown: 50/100
Watertown is 19 points higher.
Flood
Oldham: 16/100 · Watertown: 79/100
Watertown is 63 points higher.
Oldham: FEMA NFHL flood zones: 3 features intersect this tile.
Watertown: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Oldham: 20/100 · Watertown: 20/100
No gap.
Oldham: Wind exposure derived from ingested design wind / climatology tiles.
Watertown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Oldham: 73/100 · Watertown: 42/100
Oldham is 31 points higher.
Oldham: Lightning exposure derived from ingested climatology tiles.
Watertown: Lightning exposure derived from ingested climatology tiles.
Tornado
Oldham: 8/100 · Watertown: 0/100
Oldham is 8 points higher.
Oldham: Tornado risk derived from NOAA SPC historical reports.
Watertown: Tornado risk derived from NOAA SPC historical reports.
Hail
Oldham: 47/100 · Watertown: 100/100
Watertown is 53 points higher.
Oldham: Hail risk derived from NOAA SPC historical reports.
Watertown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Oldham: Unavailable · Watertown: Unavailable
A score difference cannot be calculated without both sources.
Oldham: Storm surge model is not available for this location yet.
Watertown: Storm surge model is not available for this location yet.
Wildfire
Oldham: 31/100 · Watertown: 38/100
Watertown is 7 points higher.
Oldham: Wildfire exposure derived from ingested fire potential tiles.
Watertown: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Oldham: 20/100 · Watertown: 21/100
Watertown is 1 points higher.
Oldham: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Watertown: Air quality signal derived from the latest EPA AirNow combined AQI grid.