22Total Dams
6High Hazard
2Significant
Dam Safety in Allegan County, Michigan
Allegan County has 22 dams tracked in the National Inventory of Dams. Of these, 6 are classified as high hazard — meaning failure would probably cause loss of human life. Another 2 carry a significant hazard classification. Currently, 4 dams have a condition assessment of poor or unsatisfactory.
The average dam in Allegan County is 88 years old. The most common purpose is recreation. The tallest dam is Lake Doster Dam at 34 ft.
Explore more: Oldest dams in Michigan · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Lake Doster Dam | High | Satisfactory | 34 | Recreation | 1962 |
| Trowbridge Dam | High | Poor | 30 | Recreation | 1899 |
| Menasha Dam | High | Poor | 22 | Hydroelectric | 1886 |
| Otsego Dam | High | Fair | 21 | Recreation | 1904 |
| Monterey Lake Dam | High | Satisfactory | 20 | Recreation | 1971 |
| Allegan City Dam | High | Poor | 14 | Recreation | 1900 |
| Ottogan Dam | Significant | Satisfactory | 18 | Flood Risk Reduction | 1989 |
| Pine Creek Dam | Significant | Satisfactory | 17 | Recreation | 1973 |
| Allegan | Low | Satisfactory | 30 | Hydroelectric | 1936 |
| Silver Valley Ponds Dam | Low | Fair | 27 | Other | 1963 |
| Rotman Dam | Low | Satisfactory | 26 | Recreation | 2008 |
| Van Dragt's Dam | Low | Not assessed | 24 | Recreation | 1963 |
| Swan Creek Dam | Low | Fair | 22 | Recreation | 1937 |
| Plainwell Dam #1 | Low | Not assessed | 21 | Recreation | 1902 |
| Black River Dam | Low | Not assessed | 18 | Irrigation | 1967 |
| Williams Mill Dam | Low | Not assessed | 17 | Recreation | 1870 |
| Plainwell Dam Number 2 | Low | Not assessed | 14 | Recreation | 1856 |
| Hamilton Dam | Low | Unsatisfactory | 13 | Recreation | 1900 |
| Highbanks Dam | Low | Satisfactory | 12 | Recreation | 1961 |
| Cross Dike Dam | Low | Satisfactory | 11 | Recreation | 1959 |
| Palmer Bayou Dam | Low | Satisfactory | 11 | Other | 1952 |
| Crooked Lake Dam (structure #4) | Low | Fair | 10 | Other | 1962 |