City vs city
Green Valley vs Watertown, SD
Watertown currently scores 7 points higher overall than Green Valley, 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
Green Valley: 43/100 · Watertown: 50/100
Watertown is 7 points higher.
Flood
Green Valley: 53/100 · Watertown: 79/100
Watertown is 26 points higher.
Green Valley: FEMA NFHL flood zones: 8 features intersect this tile.
Watertown: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Green Valley: 20/100 · Watertown: 20/100
No gap.
Green Valley: Wind exposure derived from ingested design wind / climatology tiles.
Watertown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Green Valley: 23/100 · Watertown: 42/100
Watertown is 19 points higher.
Green Valley: Lightning exposure derived from ingested climatology tiles.
Watertown: Lightning exposure derived from ingested climatology tiles.
Tornado
Green Valley: 23/100 · Watertown: 0/100
Green Valley is 23 points higher.
Green Valley: Tornado risk derived from NOAA SPC historical reports.
Watertown: Tornado risk derived from NOAA SPC historical reports.
Hail
Green Valley: 100/100 · Watertown: 100/100
No gap.
Green Valley: Hail risk derived from NOAA SPC historical reports.
Watertown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Green Valley: Unavailable · Watertown: Unavailable
A score difference cannot be calculated without both sources.
Green Valley: Storm surge model is not available for this location yet.
Watertown: Storm surge model is not available for this location yet.
Wildfire
Green Valley: 57/100 · Watertown: 38/100
Green Valley is 19 points higher.
Green Valley: Wildfire exposure derived from ingested fire potential tiles.
Watertown: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Green Valley: 28/100 · Watertown: 21/100
Green Valley is 7 points higher.
Green Valley: 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.