Dams in Plymouth County, Massachusetts
123Total Dams
10High Hazard
52Significant
Dam Safety in Plymouth County, Massachusetts
Plymouth County has 123 dams tracked in the National Inventory of Dams. Of these, 10 are classified as high hazard — meaning failure would probably cause loss of human life. Another 52 carry a significant hazard classification. Currently, 29 dams have a condition assessment of poor or unsatisfactory.
The average dam in Plymouth County is 116 years old. The most common purpose is recreation. The tallest dam is Tihonet Pond No. 2 Dam at 26 ft.
Explore more: Oldest dams in Massachusetts · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| First Herring Brook Reservoir Dam | High | Satisfactory | 22 | Water Supply | 1969 |
| Parker Mills Pond Dam | High | Poor | 19 | Recreation | |
| Waldo Lake Dam | High | Fair | 18 | Recreation | 1936 |
| Mill Pond Dam | High | Poor | 17 | Recreation | 1850 |
| Russell Pond Dam | High | Unsatisfactory | 16 | Recreation | |
| Route 25 No. 1 Dam | High | Satisfactory | 16 | Irrigation | 1964 |
| Tremont Mill Pond | High | Unsatisfactory | 15 | Hydroelectric | 1845 |
| Ellis Brett Pond Dam | High | Poor | 14 | Recreation | 1930 |
| Indian Brook Dam | High | Fair | 13 | Irrigation | 1930 |
| Thirty Acre Pond Dam | High | Fair | 12 | Recreation | 1936 |
| Tihonet Pond No. 2 Dam | Significant | Satisfactory | 26 | Fire Protection, Stock, Or Small Fish Pond | |
| Foundry Pond Dam | Significant | Fair | 25 | 1848 | |
| Nemasket Park Dam | Significant | Fair | 23 | Flood Risk Reduction | 1964 |
| Sylvia Place Pond Dam | Significant | Poor | 20 | Fish and Wildlife Pond | |
| Glen Charles Pond Dam | Significant | Satisfactory | 19 | Fire Protection, Stock, Or Small Fish Pond | |
| Waterville Pond Dam | Significant | Fair | 17 | Irrigation | 1920 |
| Magoun Pond Dam | Significant | Satisfactory | 16 | Fish and Wildlife Pond | 1991 |
| Tihonet Pond No. 1 Dam | Significant | Fair | 16 | Fire Protection, Stock, Or Small Fish Pond | |
| Boys & Girls Camp No. 1 Dam | Significant | Satisfactory | 16 | Recreation | |
| Studleys Pond Dam | Significant | Poor | 15 | Recreation | |
| Ames Pond Dam | Significant | Fair | 15 | Recreation | 1992 |
| Rose Brook Lower Dam | Significant | Fair | 15 | Fire Protection, Stock, Or Small Fish Pond | 1930 |
| Sealund Reservoir Dam | Significant | Poor | 14 | Recreation | |
| South Street Pond Dam | Significant | Poor | 14 | Flood Risk Reduction | |
| Oakman Pond Dam | Significant | Satisfactory | 13 | Fish and Wildlife Pond | |
| Jenney (arms House) Pond Dam | Significant | Fair | 13 | Recreation | |
| Tremont Street Dam | Significant | Fair | 12 | Recreation | |
| Winnetuxet Road Pond Dam | Significant | Fair | 12 | Recreation | |
| Hackett's Pond Dam | Significant | Satisfactory | 12 | Recreation | |
| Forge Pond Dam | Significant | Satisfactory | 12 | Recreation | 1726 |
| Cushing Pond Dam | Significant | Fair | 12 | Recreation | |
| Island Grove Pond Dam | Significant | Fair | 12 | Recreation | |
| Upper Porter Pond Dam | Significant | Fair | 12 | Recreation | 1940 |
| Blood Pond Dam | Significant | Satisfactory | 11 | Recreation | 1930 |
| Jacobs Pond Dam | Significant | Fair | 11 | Recreation | 1730 |
| Crane Brook Upper Dam | Significant | Satisfactory | 11 | Fire Protection, Stock, Or Small Fish Pond | |
| Liberty Street Dam | Significant | Fair | 11 | Recreation | 1695 |
| White Island Pond Dam | Significant | Poor | 11 | Irrigation | |
| Factory Pond Dam | Significant | Satisfactory | 11 | Flood Risk Reduction | 1943 |
| Mattapoisett River Dam | Significant | Satisfactory | 10 | 1898 | |
| Mill Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Accord Pond Dam | Significant | Fair | 10 | Water Supply | |
| Cushing Pond Dam | Significant | Fair | 10 | Recreation | 1956 |
| Reed Mill Pond Dam | Significant | Fair | 10 | Irrigation | |
| Stony Brook Pond Dam | Significant | Poor | 10 | Recreation | 2010 |
| Hunts Pond Dam | Significant | Unsatisfactory | 10 | Flood Risk Reduction | 1920 |
| Lower Chandler Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Russell Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Peterson's Saw Mill Pond Dam | Significant | Fair | 10 | Recreation | |
| West Meadow Pond Dam | Significant | Fair | 10 | Recreation | 1965 |
| South Brook Dam | Significant | Poor | 9 | Recreation | |
| Harding Pond Dam | Significant | Poor | 9 | Recreation | |
| Lower Porter Pond Dam | Significant | Fair | 9 | Recreation | 1940 |
| Boys & Girls Camp No. 3 Dam | Significant | Satisfactory | 9 | Recreation | |
| Stump Pond Dam | Significant | Unsatisfactory | 9 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| Fulling Mill Pond Dam | Significant | Fair | 8 | Water Supply | |
| Woods Pond Dam | Significant | Fair | 7 | Fire Protection, Stock, Or Small Fish Pond | |
| Cross Pond Dam | Significant | Fair | 7 | Recreation | 1930 |
| Carver's Pond Dam | Significant | Poor | 6 | Recreation | |
| Old Oaken Bucket Pond Dam | Significant | Satisfactory | 6 | Water Supply | 1640 |
| Store Pond Dam | Significant | Satisfactory | 5 | Recreation | |
| Garside Reservoir Dam | Significant | Fair | 5 | Recreation | 1909 |
| Russell Mill Pond | Low | Satisfactory | 25 | Hydroelectric | 1898 |
| Besse Bog Reservoir Dam | Low | 17 | Irrigation | 1945 | |
| Briggs Reservoir No. 2 Dam | Low | Satisfactory | 16 | Irrigation | 1937 |
| Forge Pond | Low | Fair | 15 | Recreation | 1915 |
| Kelleher Dam | Low | Poor | 15 | Recreation | 1945 |
| Leonards Pond Dam | Low | Fair | 15 | Fire Protection, Stock, Or Small Fish Pond | |
| Maple Springs Road Dam | Low | 14 | |||
| The Arm Pond Dam | Low | 14 | Irrigation | 1959 | |
| Ocean Spray Dam | Low | 13 | |||
| Beaver Dam Pond Dam | Low | 13 | Irrigation | 1928 | |
| Ortolani No. 2 Dam | Low | 13 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| Ortolani Reservoir No. 3 Dam | Low | Fair | 13 | Fire Protection, Stock, Or Small Fish Pond | 1910 |
| Briggs Reservoir Dam No. 1 | Low | Fair | 13 | Fire Protection, Stock, Or Small Fish Pond | 1917 |
| Kennard Reservoir Dam | Low | 12 | |||
| Makepeace No. 3 Dam | Low | 12 | |||
| Merry Memorial Dam | Low | Fair | 12 | Fire Protection, Stock, Or Small Fish Pond | 1910 |
| Harlow Brook No. 2 Dam | Low | 12 | Fire Protection, Stock, Or Small Fish Pond | 1953 | |
| Cooks Pond Dam | Low | 12 | Fire Protection, Stock, Or Small Fish Pond | 1920 | |
| Hayden Pond Dam | Low | Poor | 12 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| Cold Bottom Pond Dam | Low | Poor | 12 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| Freeman Bog Dam | Low | Poor | 12 | Irrigation | 1900 |
| Curtis Crossing Dam | Low | Poor | 12 | Recreation | 1908 |
| Maple Springs Brook No. 1 Dam | Low | 12 | Fire Protection, Stock, Or Small Fish Pond | 1911 | |
| Holmes Street Dam | Low | Fair | 12 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| Maple Spring No. 2 Dam | Low | 11 | |||
| Makepeace No. 4 Dam | Low | 11 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| Fuller Street Dam | Low | Fair | 11 | Fire Protection, Stock, Or Small Fish Pond | |
| Harwich Lower Reservoir Dam | Low | 11 | Irrigation | 1900 | |
| Triphammer Pond Dam | Low | Poor | 11 | Recreation | 1996 |
| Cross Street No. 2 Dam | Low | 11 | Irrigation | 1938 | |
| South Meadow Pond Dam | Low | 11 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| Wright Reservoir Dam | Low | Fair | 11 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| East Head Pond Dam | Low | Fair | 11 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| Island Pond Dam | Low | Poor | 10 | Recreation | |
| Federal Pond Dam | Low | 10 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| Hobart Pond Dam | Low | Poor | 10 | Recreation | 1693 |
| Makepeace No. 2 Dam | Low | 10 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| Atwood Upper Reservoir No. 2 Dam | Low | Satisfactory | 10 | Fire Protection, Stock, Or Small Fish Pond | 1937 |
| Burrage Pond Lower Reservoir Dike B | Low | Fair | 10 | Irrigation | 1941 |
| Hartley Saw Mill Pond Dam | Low | Fair | 10 | Fire Protection, Stock, Or Small Fish Pond | |
| Makepeace No. 1 Dam | Low | 9 | Fire Protection, Stock, Or Small Fish Pond | 1952 | |
| Hathaway Pond Dam | Low | Unsatisfactory | 9 | Fire Protection, Stock, Or Small Fish Pond | 1900 |
| Beaton-lebaron Reservoir Dam | Low | 9 | Fire Protection, Stock, Or Small Fish Pond | 1920 | |
| France Street Dam | Low | Fair | 9 | Fire Protection, Stock, Or Small Fish Pond | 1920 |
| War Memorial Park Dam | Low | Fair | 9 | Other | 1900 |
| Bartlett Pond Dam | Low | 8 | |||
| Frogfoot Reservoir Dam | Low | 8 | Irrigation | 1940 | |
| Saint Yues Bog Dam | Low | 8 | Fire Protection, Stock, Or Small Fish Pond | 1941 | |
| Golden Field Pond Dam | Low | 8 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| East Head Bog Dam No. 1 | Low | 8 | Fire Protection, Stock, Or Small Fish Pond | 1900 | |
| Egger Bog Dam | Low | 8 | Fire Protection, Stock, Or Small Fish Pond | 1947 | |
| Muddy Pond Dam | Low | Satisfactory | 8 | Irrigation | 1900 |
| Silver Lake Dam | Low | Fair | 8 | Water Supply | 1908 |
| Fawn Pond Dam | Low | 7 | |||
| Smalley Bog Reservoir Dam | Low | 7 | |||
| Woodpecker Pond Dam | Low | Poor | 7 | Recreation | |
| Indian Trail Reservoir No. 3 Dam | Low | 7 | Irrigation | 1900 | |
| Assawompset Pond Dam | Low | Poor | 7 | Water Supply | 1894 |
| Bound Brook Pond Dam | Low | Fair | 7 | Recreation | 1969 |
| Burrage Pond Lower Reservoir Dike A | Low | Poor | 7 | Recreation | 1923 |
| Burrage Pond Upper Reservoir Dam | Low | Poor | 7 | Recreation |