Most Flood-Prone Counties in Louisiana

Based on NOAA Storm Events Database records from 1996 to 2025, these are the Louisiana counties with the most recorded flood events. Caddo Parish tops the list with 281 events. The data includes river floods, flash floods, coastal flooding, and hurricane-related flooding.

Rank	County	Total Events	River Floods	Flash Floods
1	Caddo Parish	281	31	246
2	Orleans Parish	219	13	194
3	Jefferson Parish	159	12	88
4	St. Tammany Parish	158	23	123
5	Bossier Parish	150	21	125
6	Calcasieu Parish	127	19	107
7	Ouachita Parish	123	12	106
8	St. Bernard Parish	117	3	20
9	East Baton Rouge Parish	113	9	92
10	Lafourche Parish	104	4	21
11	St. Charles Parish	103	5	56
12	Terrebonne Parish	102	2	25
13	Natchitoches Parish	101	8	87
14	Webster Parish	72	9	58
15	Plaquemines Parish	71	1	7
16	Lafayette Parish	70	10	50
17	De Soto Parish	66	7	55
18	Sabine Parish	64	2	55
19	St. Martin Parish	62	7	31
20	St. John the Baptist Parish	61	4	11
21	Rapides Parish	59	7	43
22	Morehouse Parish	57	4	46
23	Grant Parish	54	4	44
24	Richland Parish	54	3	44
25	St. Landry Parish	54	10	36
26	Beauregard Parish	53	11	34
27	Cameron Parish	51	4	8
28	Franklin Parish	51	1	42
29	Union Parish	51	4	42
30	Winn Parish	46	4	37
31	Iberia Parish	44	6	36
32	Bienville Parish	42	9	28
33	LaSalle Parish	41	1	33
34	Red River Parish	41	7	29
35	Tangipahoa Parish	41	7	26
36	Vernon Parish	41	8	27
37	Concordia Parish	40	4	29
38	West Carroll Parish	40	2	33
39	Catahoula Parish	38	3	27
40	St. James Parish	38	7	12
41	East Carroll Parish	37	5	27
42	Lincoln Parish	37	1	31
43	Washington Parish	36	5	19
44	Avoyelles Parish	35	5	22
45	Vermilion Parish	35	5	26
46	Jefferson Davis Parish	34	5	29
47	Acadia Parish	34	5	29
48	Evangeline Parish	34	2	24
49	Tensas Parish	33	3	25
50	Ascension Parish	32	3	27
51	St. Mary Parish	31	6	22
52	Allen Parish	31	3	19
53	Madison Parish	31	4	21
54	Pointe Coupee Parish	30	4	16
55	Caldwell Parish	29	4	20
56	Claiborne Parish	29	1	24
57	East Feliciana Parish	29	0	19
58	Iberville Parish	28	6	10
59	Livingston Parish	28	1	22
60	Jackson Parish	25	0	20
61	West Baton Rouge Parish	25	2	10
62	Assumption Parish	23	1	8
63	West Feliciana Parish	22	3	8
64	St. Helena Parish	15	1	4

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

FloodZoneMap.org

Most Flood-Prone Counties in Louisiana

Check Your Property's Flood Zone