Dams in Winnebago County, Illinois
18Total Dams
7High Hazard
6Significant
Dam Safety in Winnebago County, Illinois
Winnebago County has 18 dams tracked in the National Inventory of Dams. Of these, 7 are classified as high hazard — meaning failure would probably cause loss of human life. Another 6 carry a significant hazard classification.
The average dam in Winnebago County is 61 years old. The most common purpose is recreation. The tallest dam is Alpine Dam at 48 ft.
Explore more: Oldest dams in Illinois · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Alpine Dam | High | Not Available | 48 | Flood Risk Reduction | 1942 |
| Pierce Lake Dam | High | Not Available | 46 | Recreation | 1960 |
| Lake Summerset Dam | High | Not Available | 44 | Recreation | 1969 |
| Page Park Dam | High | Not Available | 41 | Flood Risk Reduction | 1980 |
| Levings Lake Dam | High | Not Available | 23 | Flood Risk Reduction | 1935 |
| Pebble Creek Dam | High | Not Available | 21 | Flood Risk Reduction | 1984 |
| Rock River Water Reclamation District Excess Flow Basin Dam | High | Not Available | 8 | Other | 2016 |
| Kiowa Crossing Dam | Significant | Not Available | 18 | Recreation | 1980 |
| Harrison Park West Detention Dam | Significant | Not Available | 15 | Flood Risk Reduction | |
| Harrison Park East Detention Pond Dam | Significant | Not Available | 15 | Flood Risk Reduction | |
| Elliot Golf Course Dam | Significant | Not Available | 11 | Recreation | 1970 |
| Spring Lake Dam | Significant | Not Available | 10 | Recreation | 1965 |
| Lakewood Hills Lake Dam | Significant | Not Available | 0 | Recreation | |
| Olson Lake Dam | Low | Not Available | 24 | Recreation | 1991 |
| Coolidge Creek Dam | Low | Not Available | 22 | Recreation | 1998 |
| Fordam Station Dam | Low | Not Available | 12 | Hydroelectric | 1852 |
| Cherry Valley Lower Dam | Low | Not Available | 12 | Flood Risk Reduction | 1993 |
| Rockton | Low | Satisfactory | 7 | Hydroelectric | 1929 |