Flood Zone Comparison
Compare key metrics between 57570 57570, SD — Zone AE and 99667 99667, AK — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 57570 57570, SD — Zone AE | 99667 99667, AK — Zone AE |
|---|---|---|
| name | 57570 57570, SD — Zone AE | 99667 99667, AK — Zone AE |
| zip code | 57570 | 99667 |
| city | 57570 | 99667 |
| state | South Dakota | Alaska |
| state code | SD | AK |
| category | High Risk | High Risk |
| flood zone | Zone AE (High Risk — 100-Year Floodplain) | Zone AE (High Risk — 100-Year Floodplain) |
| risk level | High Risk | High Risk |
| annual flood prob | 1% annual chance (100-year flood) | 1% annual chance (100-year flood) |
| insurance required | Required for federally-backed mortgages | Required for federally-backed mortgages |
| avg annual premium | 1,607 | 1,607 |
| base flood elevation | 6 ft | 7 ft |
| historical floods | 14 recorded flood events in the past 50 years. Most recent major flood: 2014 | 2 recorded flood events in the past 50 years. Most recent major flood: 2009 |
| nearest water | Rio Grande (1.3 miles) | Tennessee River (3.8 miles) |
| elevation ft | 1,251 | 1,817 |
| population | 61,413 | 38,148 |
| median home value | 245,429 | 452,385 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $181,770 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $133,721 |
| mitigation tips | Elevate utilities above base flood elevation; install sump pumps with battery backup; consider flood-proofing ground floor; maintain flood insurance; create an emergency evacuation plan; store important documents above flood level. | Elevate utilities above base flood elevation; install sump pumps with battery backup; consider flood-proofing ground floor; maintain flood insurance; create an emergency evacuation plan; store important documents above flood level. |
| fema map id | 3572C810J | 8343C918J |
| last updated | 2025-01-01 | 2025-01-01 |
Our team analyzes data from FEMA National Flood Hazard Layer to deliver accurate, up-to-date information. All data is verified and cross-referenced with official sources.