City vs city
Piedmont vs Watertown, SD
Watertown currently scores 7 points higher overall than Piedmont, with the largest gap in wildfire.
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
Piedmont: 43/100 · Watertown: 50/100
Watertown is 7 points higher.
Flood
Piedmont: 59/100 · Watertown: 79/100
Watertown is 20 points higher.
Piedmont: FEMA NFHL flood zones: 4 features intersect this tile.
Watertown: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Piedmont: 20/100 · Watertown: 20/100
No gap.
Piedmont: Wind exposure derived from ingested design wind / climatology tiles.
Watertown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Piedmont: 25/100 · Watertown: 42/100
Watertown is 17 points higher.
Piedmont: Lightning exposure derived from ingested climatology tiles.
Watertown: Lightning exposure derived from ingested climatology tiles.
Tornado
Piedmont: 8/100 · Watertown: 0/100
Piedmont is 8 points higher.
Piedmont: Tornado risk derived from NOAA SPC historical reports.
Watertown: Tornado risk derived from NOAA SPC historical reports.
Hail
Piedmont: 100/100 · Watertown: 100/100
No gap.
Piedmont: Hail risk derived from NOAA SPC historical reports.
Watertown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Piedmont: Unavailable · Watertown: Unavailable
A score difference cannot be calculated without both sources.
Piedmont: Storm surge model is not available for this location yet.
Watertown: Storm surge model is not available for this location yet.
Wildfire
Piedmont: 60/100 · Watertown: 38/100
Piedmont is 22 points higher.
Piedmont: Wildfire exposure derived from ingested fire potential tiles.
Watertown: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Piedmont: 27/100 · Watertown: 21/100
Piedmont is 6 points higher.
Piedmont: 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.