24 flood insurance claims·$179,375 paid·4 federal flood & hurricane disasters
Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around Oconee County, South Carolina. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.
Flash flooding from heavy rainfall events dominates the flood history of Oconee County, accounting for 22 out of 29 total flood events recorded over the last 30 years in the NOAA Storm Events Database, alongside 5 general floods and 2 tropical storms.
Recent occurrences illustrate this risk. In September 2022, heavy rain near a stalled frontal zone produced 1 to 2 inches of rain in just a few hours across northern Oconee County, resulting in isolated flash flooding in the Chattooga River basin. Later, in January 2024, a major frontal system brought 3 to 5 inches of rain in approximately 12 hours, causing widespread flooding reports. Tropical Storm Helene also impacted the area in September 2024, bringing heavy rainfall from a moisture plume interacting with a cold front.
National Flood Insurance Program claims data indicates that properties located in FEMA-designated Zone A face the highest severity, averaging 43 inches of recorded water depth per claim with an average payout of $15,431 across 10 claims. In contrast, Zone X properties recorded an average water depth of 2 inches across 12 claims with an average payout of $10,045. Property owners in designated high-risk zones, such as Zone A, should pay the closest attention to these flood risks.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
In flood insurance claims here that reported a flood depth, the average was 32 inches.
Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.
Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.
The worst year was 1994, with 4 claims and $18,230 paid.
Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.
10 NOAA storm reports from Oconee County describe what happened, in the words of the forecasters who covered it. Read the South Carolina flood stories →
23 federal disaster declarations since 1977, 4 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Severe Winter Storm | Jan 21, 2026 |
| Hurricane Helene | Sep 25, 2024 |
| Hurricane Debby | Aug 4, 2024 |
| Hurricane Idalia | Aug 29, 2023 |
| Hurricane Ian | Sep 25, 2022 |
| Severe Storms, Tornadoes, And Straight-line Winds | Apr 12, 2020 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Feb 6, 2020 |
| Hurricane Dorian | Aug 31, 2019 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
29 since 1996: 22 flash floods and 5 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Tropical Storm | Sep 27, 2024 | $3,000 |
| Tropical Storm | Sep 27, 2024 | $2,000 |
| Flash Flood | Jan 9, 2024 | $5,000 |
| Flash Flood | Sep 5, 2022 | $1,000 |
| Flood | Sep 3, 2022 | — |
| Flash Flood | Sep 3, 2022 | $10,000 |
| Flood | Feb 6, 2020 | $40,000 |
| Flash Flood | Feb 6, 2020 | $400,000 |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Tropical Storm · Sep 27, 2024. Tropical Cyclone Helene began organizing over the western Caribbean on the 23rd and 24th of September before rapidly intensifying as it moved north through the eastern Gulf of Mexico on the 25th and 26th. A plume of moisture extending from the intensifying storm interacted with a slow-moving cold front to produce a band of widespread heavy rain showers and embedded scattered thunderstorms over the southern Appalac…
Flash Flood · Jan 9, 2024. A major/complex frontal system brought widespread rain with embedded thunderstorms to upstate South Carolina, mainly during the late morning and afternoon of the 9th. Widespread rainfall amounts of 3 to 5 inches (with locally higher amounts) in around 12 hours resulted in numerous reports of flooding. Isolated severe thunderstorms also resulted in a a few damaging wind gusts reports over the Piedmont.
Flash Flood · Sep 5, 2022. Heavy rain fell off and on throughout the first few days of September in the vicinity of a stalled frontal zone. A period of heavy rain during the morning of the 5th resulted in 1 to 2 inches in just a few hours across northern Oconee County, resulting in isolated flash flooding in the Chattooga River basin.
Flood · Sep 3, 2022. A small area of heavy rain showers and thunderstorms repeatedly developed and moved over the same areas of Oconee County during the overnight and early morning hours of the 3rd. Rainfall totals of 4-7 inches resulted in flash flooding across the western half of the county.
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in Oconee County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.
Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.