Flood Zone Comparison
Compare key metrics between 57334 57334, SD — Zone AE and 77630 77630, TX — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 57334 57334, SD — Zone AE | 77630 77630, TX — Zone AE |
|---|---|---|
| name | 57334 57334, SD — Zone AE | 77630 77630, TX — Zone AE |
| zip code | 57334 | 77630 |
| city | 57334 | 77630 |
| state | South Dakota | Texas |
| state code | SD | TX |
| 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 | 2,550 | 2,550 |
| base flood elevation | 30 ft | 10 ft |
| historical floods | 14 recorded flood events in the past 50 years. Most recent major flood: 2022 | 13 recorded flood events in the past 50 years. Most recent major flood: 2013 |
| nearest water | Connecticut River (0.2 miles) | Arkansas River (1.6 miles) |
| elevation ft | 708 | 1,578 |
| population | 7,592 | 74,082 |
| median home value | 719,330 | 752,718 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $86,025 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $70,983 |
| 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 | 9662C669J | 4299C646J |
| 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.