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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 County12017103
3Mesa County1083870
4Larimer County83974
5La Plata County761264
6Huerfano County731261
7Weld County712942
8Fremont County701456
9Garfield County632142
10Kit Carson County501436
11Douglas County46541
12Yuma County461333
13Arapahoe County45936
14Jefferson County44935
15Rio Blanco County41833
16Morgan County40832
17Montrose County401723
18Otero County391227
19Boulder County37631
20Eagle County351322
21San Miguel County35728
22Pitkin County32725
23Cheyenne County31427
24Prowers County31328
25Denver County31724
26Custer County30723
27Washington County29524
28Elbert County26422
29Adams County26521
30Routt County26251
31Teller County25025
32Logan County22517
33Montezuma County221111
34Ouray County22319
35Chaffee County22220
36Costilla County201010
37Delta County20119
38Gunnison County20137
39Las Animas County20515
40Lincoln County20119
41Moffat County17107
42Grand County16016
43Bent County16412
44Archuleta County1578
45Phillips County14212
46Baca County11110
47Kiowa County10010
48Park County1019
49Saguache County1046
50Dolores County844
51Sedgwick County817
52Hinsdale County716
53Clear Creek County707
54Alamosa County660
55San Juan County606
56Rio Grande County532
57Crowley County505
58Broomfield County312
59Conejos County330
60Gilpin County202
61Mineral County220
62Jackson County110
63Summit County101

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

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