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 693 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	693	9	301
2	Richland County	276	19	238
3	Horry County	166	32	105
4	Colleton County	128	21	33
5	Berkeley County	116	6	73
6	Beaufort County	114	4	43
7	Greenville County	107	20	84
8	Lexington County	100	13	77
9	Dorchester County	99	12	62
10	Orangeburg County	83	9	66
11	Georgetown County	78	14	46
12	Lancaster County	73	7	62
13	Spartanburg County	66	20	44
14	Florence County	61	26	31
15	Anderson County	61	16	43
16	Chesterfield County	51	1	38
17	Sumter County	50	2	32
18	York County	50	21	26
19	Jasper County	46	0	21
20	Pickens County	40	7	31
21	Marion County	37	9	23
22	Darlington County	34	18	11
23	Laurens County	34	14	18
24	Aiken County	32	7	20
25	Oconee County	29	5	22
26	Hampton County	29	1	17
27	Greenwood County	26	10	14
28	Williamsburg County	26	7	16
29	Clarendon County	25	0	19
30	Marlboro County	24	3	14
31	Kershaw County	22	4	13
32	Allendale County	19	0	12
33	Union County	18	7	9
34	Cherokee County	17	6	9
35	Abbeville County	17	5	11
36	Bamberg County	16	1	11
37	Newberry County	16	2	10
38	Chester County	15	6	7
39	Calhoun County	14	2	8
40	Dillon County	14	2	9
41	Barnwell County	13	3	6
42	Edgefield County	12	2	8
43	Fairfield County	11	1	6
44	McCormick County	10	0	7
45	Saluda County	9	0	6
46	Lee County	8	0	3

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

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Most Flood-Prone Counties in South Carolina

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