Flood Zone Comparison
Compare key metrics between 11901 Riverhead, NY — Zone A and 17758 17758, PA — Zone A. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 11901 Riverhead, NY — Zone A | 17758 17758, PA — Zone A |
|---|---|---|
| name | 11901 Riverhead, NY — Zone A | 17758 17758, PA — Zone A |
| zip code | 11901 | 17758 |
| city | Riverhead | 17758 |
| state | New York | Pennsylvania |
| state code | NY | PA |
| category | High Risk | High Risk |
| flood zone | Zone A (High Risk — 100-Year Floodplain, No BFE) | Zone A (High Risk — 100-Year Floodplain, No BFE) |
| 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 | 2,947 | 2,948 |
| base flood elevation | 24 ft | 7 ft |
| historical floods | 3 recorded flood events in the past 50 years. Most recent major flood: 2023 | 13 recorded flood events in the past 50 years. Most recent major flood: 2005 |
| nearest water | Susquehanna River (4.6 miles) | Tennessee River (1.4 miles) |
| elevation ft | 793 | 284 |
| population | 76,894 | 17,840 |
| median home value | 539,321 | 243,496 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $137,793 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $168,853 |
| 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 | 8599C488J | 5778C496J |
| 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.