City vs city
Iroquois vs Riverside Colony, SD
Iroquois currently scores 4 points higher overall than Riverside Colony, 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
Iroquois: 36/100 · Riverside Colony: 32/100
Iroquois is 4 points higher.
Flood
Iroquois: 53/100 · Riverside Colony: 80/100
Riverside Colony is 27 points higher.
Iroquois: FEMA NFHL flood zones: 15 features intersect this tile.
Riverside Colony: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Iroquois: 21/100 · Riverside Colony: 21/100
No gap.
Iroquois: Wind exposure derived from ingested design wind / climatology tiles.
Riverside Colony: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Iroquois: 58/100 · Riverside Colony: 49/100
Iroquois is 9 points higher.
Iroquois: Lightning exposure derived from ingested climatology tiles.
Riverside Colony: Lightning exposure derived from ingested climatology tiles.
Tornado
Iroquois: 31/100 · Riverside Colony: 4/100
Iroquois is 27 points higher.
Iroquois: Tornado risk derived from NOAA SPC historical reports.
Riverside Colony: Tornado risk derived from NOAA SPC historical reports.
Hail
Iroquois: 39/100 · Riverside Colony: 25/100
Iroquois is 14 points higher.
Iroquois: Hail risk derived from NOAA SPC historical reports.
Riverside Colony: Hail risk derived from NOAA SPC historical reports.
Storm surge
Iroquois: Unavailable · Riverside Colony: Unavailable
A score difference cannot be calculated without both sources.
Iroquois: Storm surge model is not available for this location yet.
Riverside Colony: Storm surge model is not available for this location yet.
Wildfire
Iroquois: 28/100 · Riverside Colony: 37/100
Riverside Colony is 9 points higher.
Iroquois: Wildfire exposure derived from ingested fire potential tiles.
Riverside Colony: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Iroquois: 19/100 · Riverside Colony: 7/100
Iroquois is 12 points higher.
Iroquois: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Riverside Colony: Air quality signal derived from the latest EPA AirNow combined AQI grid.