Dams in Hancock County, Maine
36Total Dams
7High Hazard
4Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Ellsworth | High | Satisfactory | 62 | Hydroelectric | 1907 |
| Graham Lake Flood Control | High | Satisfactory | 58 | Hydroelectric | 1994 |
| Graham Lake Dam | High | Satisfactory | 43 | Hydroelectric | 1924 |
| Silver Lake | High | Unsatisfactory | 29 | Water Supply | 1930 |
| Toddy Pond | High | Unsatisfactory | 16 | Flood Risk Reduction | 1900 |
| Alamoosook Lake | High | Unsatisfactory | 15 | Recreation | 1930 |
| Lower West Bay Pond | High | Poor | 12 | Recreation | 1920 |
| Branch Lake | Significant | Fair | 15 | Hydroelectric | 1911 |
| Lily Pond | Significant | Poor | 11 | Water Supply | 1948 |
| Ulmer Brook | Significant | Unsatisfactory | 10 | Recreation | 1981 |
| Long Pond | Significant | Poor | 8 | Hydroelectric | 1930 |
| Mill Pond | Low | Not Rated | 20 | Recreation | 1915 |
| Fosters Pond | Low | Not Rated | 16 | Recreation | 1920 |
| Orland Village | Low | Not Rated | 15 | Other | 1930 |
| Craig Pond Dam | Low | Fair | 13 | Recreation | 1891 |
| Upper Somes | Low | Not Rated | 12 | Hydroelectric | 1900 |
| Lower Hadlock Pond | Low | Satisfactory | 12 | Water Supply | 1934 |
| Hamilton Pond | Low | Not Rated | 11 | Fire Protection, Stock, Or Small Fish Pond | 1920 |
| Lyle Frost Wma | Low | Not Rated | 11 | Recreation | 1900 |
| Philips Lake | Low | Poor | 10 | Other | 1900 |
| Little Echo Lake | Low | Not Rated | 10 | Other | 1900 |
| Thurston Pond | Low | Not Rated | 9 | Flood Risk Reduction | 1900 |
| Patten Brook | Low | Not Rated | 9 | Recreation | 1900 |
| Lower Lead Mountain | Low | Not Rated | 9 | Recreation | 1900 |
| Upper West Bay Pond | Low | Not Rated | 9 | Fish and Wildlife Pond | 1978 |
| Barbless Pond | Low | Not Rated | 8 | Recreation | 1900 |
| Nicatous Stream | Low | Not Rated | 8 | Recreation | 1974 |
| Lower Sabao Lake | Low | Not Rated | 8 | Recreation | 1900 |
| Eagle Lake | Low | Satisfactory | 8 | Hydroelectric | 1935 |
| Green Lake | Low | Satisfactory | 8 | Hydroelectric | 1911 |
| The Tarn | Low | Not Rated | 7 | Recreation | 1900 |
| Leighton Brook | Low | Not Rated | 7 | Other | |
| Jordan Pond | Low | Not Rated | 7 | Water Supply | 1920 |
| Beech Hill Pond | Low | Not Rated | 7 | Recreation | |
| Seal Cove Pond | Low | Not Rated | 7 | Recreation | 1900 |
| Jones Pond | Low | Not Rated | 5 | Flood Risk Reduction | 1920 |