Dams in Lyon County, Iowa
8Total Dams
0High Hazard
1Significant
Dam Safety in Lyon County, Iowa
Lyon County has 8 dams tracked in the National Inventory of Dams. Another 1 carry a significant hazard classification.
The average dam in Lyon County is 56 years old. The most common purpose is fire protection, stock, or small fish pond. The tallest dam is Lake Pahoja Dam at 50 ft.
Explore more: Oldest dams in Iowa · 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 |
|---|---|---|---|---|---|
| Lake Pahoja Dam | Significant | Satisfactory | 50 | Fire Protection, Stock, Or Small Fish Pond | 1974 |
| Folkerts Dam | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1989 |
| Fluitt Dam | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1969 |
| Lyon County Roadgrade Dam 10-98-48 | Low | Not Rated | 31 | Other | 1988 |
| Lee Dam | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1969 |
| Jansma Dam | Low | Not Rated | 22 | Fire Protection, Stock, Or Small Fish Pond | 1970 |
| Klondike Mill Dam | Low | Not Rated | 12 | Recreation | |
| Rock Rapids Milldam | Low | Not Rated | 7 | Water Supply | 1931 |