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Most Flood-Prone Counties in Colorado

Based on NOAA Storm Events Database records from 1996 to 2025, these are the Colorado counties with the most recorded flood events. El Paso County tops the list with 201 events. The data includes river floods, flash floods, coastal flooding, and hurricane-related flooding.

RankCountyTotal EventsRiver FloodsFlash Floods
1El Paso County20119182
2Pueblo County11714103
3Mesa County1033370
4Larimer County80674
5La Plata County71764
6Weld County652342
7Fremont County62656
8Huerfano County62161
9Garfield County561442
10Kit Carson County501436
11Douglas County45441
12Jefferson County44935
13Yuma County441133
14Arapahoe County44836
15Morgan County39732
16Rio Blanco County39633
17Montrose County391623
18Otero County391227
19Boulder County36531
20San Miguel County35728
21Eagle County321022
22Prowers County31328
23Denver County31724
24Cheyenne County29227
25Pitkin County29425
26Washington County29524
27Adams County26521
28Elbert County25322
29Teller County25025
30Custer County23023
31Logan County22517
32Montezuma County221111
33Ouray County22319
34Lincoln County20119
35Chaffee County20020
36Gunnison County19127
37Delta County1899
38Routt County17161
39Grand County16016
40Las Animas County16115
41Bent County16412
42Moffat County1587
43Archuleta County1468
44Phillips County14212
45Baca County11110
46Costilla County10010
47Kiowa County10010
48Park County1019
49Dolores County844
50Sedgwick County817
51Hinsdale County716
52Clear Creek County707
53Saguache County606
54San Juan County606
55Crowley County505
56Broomfield County312
57Gilpin County202
58Rio Grande County202
59Jackson County110
60Mineral County110
61Summit County101

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

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