Dams in Prairie County, Montana
49Total Dams
0High Hazard
1Significant
Dam Safety in Prairie County, Montana
Prairie County has 49 dams tracked in the National Inventory of Dams. Another 1 carry a significant hazard classification. Currently, 3 dams have a condition assessment of poor or unsatisfactory.
The average dam in Prairie County is 68 years old. The most common purpose is fire protection, stock, or small fish pond. The tallest dam is Swift (prairie) at 40 ft.
Explore more: Oldest dams in Montana · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Pfaff Irrigation | Significant | 28 | Irrigation | 1957 | |
| Swift (prairie) | Low | 40 | Fire Protection, Stock, Or Small Fish Pond | 1965 | |
| Agate Flat Dam | Low | Satisfactory | 32 | ||
| Coal Creek Drop Dam | Low | Satisfactory | 31 | Flood Risk Reduction | |
| Coal Creek Detention Dam | Low | Poor | 31 | Fire Protection, Stock, Or Small Fish Pond | 1963 |
| Payton #1 | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1956 | |
| Payton #2 | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1954 | |
| Clark (prairie) | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1938 | |
| Custer Creek | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Hunter Creek | Low | 30 | Irrigation | 1932 | |
| Minutemen | Low | 30 | Irrigation | 1952 | |
| Mcmullin Bros Detention | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1966 | |
| Olson (prairie) | Low | 30 | Irrigation | 1963 | |
| Mcmullin Bros Cooperative | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1964 | |
| Mcmullin Bros Upper | Low | 30 | Irrigation | 1960 | |
| Cabin | Low | Not Available | 30 | Fire Protection, Stock, Or Small Fish Pond | 1954 |
| Lower | Low | 29 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Ash Creek | Low | 29 | Irrigation | 1951 | |
| Clark Retention Dam | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 2003 |
| South Fork Detention Dam | Low | Poor | 28 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Wesley #1 | Low | 25 | Irrigation | 1957 | |
| Wesley #2 | Low | 25 | Irrigation | 1890 | |
| Dondarlee #1 | Low | 21 | Fire Protection, Stock, Or Small Fish Pond | 1948 | |
| Mgdevlon Dam | Low | Not Rated | 21 | ||
| Homestead Retention Dam | Low | Unsatisfactory | 21 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Schwartz | Low | 20 | Irrigation | 1950 | |
| Saucer #5 | Low | 20 | Fire Protection, Stock, Or Small Fish Pond | 1940 | |
| Hines #1 | Low | 20 | Fire Protection, Stock, Or Small Fish Pond | 1950 | |
| Saucer #3 | Low | 20 | Fire Protection, Stock, Or Small Fish Pond | 1940 | |
| Harmes Dam | Low | Not Rated | 20 | ||
| Duck/sugrast Dam | Low | Not Rated | 20 | ||
| Schlenker Retention Dam | Low | Not Rated | 20 | Fire Protection, Stock, Or Small Fish Pond | 2003 |
| Grant Dam | Low | Not Rated | 19 | ||
| Janitell #1 | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1949 | |
| Hyde #2 | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1960 | |
| Saucer #6 | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1944 | |
| Mgdevlin #2 | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1954 | |
| Shumaker #1 | Low | 18 | Irrigation | 1965 | |
| Silvertip Retention Dam | Low | Not Rated | 18 | Fire Protection, Stock, Or Small Fish Pond | 2003 |
| Hines #2 | Low | 17 | Fire Protection, Stock, Or Small Fish Pond | 1950 | |
| Saucer #2 | Low | 16 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Saucer #1 | Low | 15 | Irrigation | 1948 | |
| Nefsy #3 | Low | 15 | Fire Protection, Stock, Or Small Fish Pond | 1953 | |
| Mcclure Detention Dam | Low | Fair | 15 | Fire Protection, Stock, Or Small Fish Pond | 2003 |
| Pfaft #1 | Low | 14 | Fire Protection, Stock, Or Small Fish Pond | 1942 | |
| Innes Dam | Low | Not Rated | 14 | ||
| Terry Sewage Ponds | Low | 11 | Other | 1963 | |
| Saucer #4 | Low | 10 | Irrigation | 1964 | |
| Nefsy #2 | Low | 10 | Fire Protection, Stock, Or Small Fish Pond | 1950 |