23Total Dams
3High Hazard
4Significant
Dam Safety in Park County, Montana
Park County has 23 dams tracked in the National Inventory of Dams. Of these, 3 are classified as high hazard — meaning failure would probably cause loss of human life. Another 4 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Park County is 70 years old. The most common purpose is irrigation. The tallest dam is Cottonwood Dam (park) at 39 ft.
Explore more: Oldest dams in Montana · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Cottonwood Dam (park) | High | Poor | 39 | Irrigation | 1953 |
| Jordan Dam | High | Poor | 38 | Irrigation | 1961 |
| Crazy Mountain Ranch | High | Satisfactory | 36 | Recreation | 1968 |
| O'halloran | Significant | Not assessed | 23 | Irrigation | 1960 |
| Arthun Dam | Significant | Not assessed | 23 | Irrigation | 1956 |
| Kaiser | Significant | Not assessed | 20 | Irrigation | 1964 |
| Dailey Lake | Significant | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1945 |
| Westling | Low | Not assessed | 30 | Irrigation | 1954 |
| Pepper #2 | Low | Not assessed | 30 | Irrigation | 1954 |
| Pepper #1 | Low | Not assessed | 30 | Irrigation | 1953 |
| Bonhomme Dam | Low | Not assessed | 26 | Irrigation | 1954 |
| Nollmeyer #1 | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| 1120 Ice Reservoir Dam | Low | Not assessed | 25 | 1898 | |
| O'halloran #1 | Low | Not assessed | 23 | Irrigation | 1958 |
| Pepper | Low | Not assessed | 20 | Irrigation | 1954 |
| John Ragsdale Dam | Low | Not assessed | 19 | Irrigation | 1980 |
| Thelma #1 | Low | Not assessed | 19 | Irrigation | 1962 |
| Kelly (park) | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Landers #1 | Low | Not assessed | 15 | Irrigation | 1949 |
| Merrell Dam | Low | Not assessed | 15 | Recreation | 1966 |
| Yastremski Dam | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1950 |
| D'ewart | Low | Not assessed | 10 | Irrigation | 1951 |
| Banana Peel | Low | Not assessed | 8 | Irrigation | 1952 |