Most Flood-Prone Counties in South...

Based on NOAA Storm Events Database records from 1996 to 2025, these are the South Carolina counties with the most recorded flood events. Charleston County tops the list with 307 events. The data includes river floods, flash floods, coastal flooding, and hurricane-related flooding.

Rank	County	Total Events	River Floods	Flash Floods
1	Charleston County	307	6	301
2	Richland County	256	18	238
3	Horry County	139	32	105
4	Greenville County	104	20	84
5	Lexington County	89	12	77
6	Berkeley County	75	2	73
7	Orangeburg County	75	9	66
8	Dorchester County	70	8	62
9	Lancaster County	69	7	62
10	Spartanburg County	64	20	44
11	Georgetown County	60	14	46
12	Florence County	57	26	31
13	Colleton County	52	19	33
14	Anderson County	51	8	43
15	Beaufort County	46	3	43
16	York County	44	18	26
17	Chesterfield County	38	0	38
18	Pickens County	38	7	31
19	Sumter County	34	2	32
20	Marion County	32	9	23
21	Darlington County	29	18	11
22	Aiken County	27	7	20
23	Oconee County	27	5	22
24	Laurens County	23	5	18
25	Williamsburg County	23	7	16
26	Greenwood County	21	7	14
27	Jasper County	21	0	21
28	Clarendon County	19	0	19
29	Hampton County	18	1	17
30	Kershaw County	17	4	13
31	Marlboro County	17	3	14
32	Abbeville County	14	3	11
33	Bamberg County	12	1	11
34	Allendale County	12	0	12
35	Newberry County	12	2	10
36	Dillon County	11	2	9
37	Cherokee County	10	1	9
38	Calhoun County	10	2	8
39	Edgefield County	10	2	8
40	Barnwell County	9	3	6
41	Chester County	9	2	7
42	Union County	9	0	9
43	Fairfield County	7	1	6
44	McCormick County	7	0	7
45	Saluda County	6	0	6
46	Lee County	3	0	3

Source: NOAA Storm Events Database (1996–2025).

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Most Flood-Prone Counties in South Carolina

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