Dams in Norfolk County, Massachusetts
96Total Dams
18High Hazard
52Significant
Dam Safety in Norfolk County, Massachusetts
Norfolk County has 96 dams tracked in the National Inventory of Dams. Of these, 18 are classified as high hazard — meaning failure would probably cause loss of human life. Another 52 carry a significant hazard classification. Currently, 39 dams have a condition assessment of poor or unsatisfactory.
The average dam in Norfolk County is 128 years old. The most common purpose is recreation. The tallest dam is Braintree Dam at 37 ft.
Explore more: Oldest dams in Massachusetts · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Braintree Dam | High | Fair | 37 | Flood Risk Reduction | 1888 |
| Blue Hills Reservoir Dam | High | Satisfactory | 36 | Recreation | 1950 |
| Aaron River Dam | High | Satisfactory | 29 | Water Supply | 1978 |
| Iron Hill Dam | High | Satisfactory | 26 | Recreation | |
| Willett Pond Dam | High | Poor | 25 | Recreation | 1913 |
| Centennial Dam | High | Fair | 23 | Recreation | |
| Allen Reservoir Pl-566 Flood Control Dam | High | Satisfactory | 21 | Flood Risk Reduction | 1981 |
| Brookline Reservoir Dam | High | Satisfactory | 19 | Recreation | 1848 |
| Bird Pond Dam | High | Poor | 19 | Recreation | 1800 |
| Great Pond Upper Reservoir Dam | High | Fair | 18 | Water Supply | 1942 |
| Ellis Pond Dam | High | Satisfactory | 18 | Recreation | |
| Weld Pond Dam | High | Poor | 15 | Recreation | 1870 |
| Whitmans Pond Dam | High | Satisfactory | 15 | Recreation | |
| Smelt Brook Dam | High | Satisfactory | 15 | Flood Risk Reduction | 1975 |
| Rosemary Lake Dam | High | Satisfactory | 12 | Recreation | 1830 |
| Cobbs Pond Dam | High | Fair | 12 | Recreation | |
| Sabrina Lake West Dike | High | Unsatisfactory | 12 | Recreation | 1870 |
| Great Pond Dam | High | Fair | 10 | Water Supply | 1945 |
| Neponset River Dam - Hyde Park | Significant | Poor | 22 | Flood Risk Reduction | |
| Pine Tree Brook Pl-566 Flood Control Dam | Significant | Satisfactory | 21 | Flood Risk Reduction | 1955 |
| Kingsbury Pond Dam | Significant | Fair | 19 | Recreation | |
| City Mills Pond Dam | Significant | Poor | 19 | Fire Protection, Stock, Or Small Fish Pond | 1935 |
| Industries Drive Dam | Significant | Poor | 18 | ||
| Noanet Pond Dam | Significant | Satisfactory | 18 | Recreation | 1963 |
| Sanford Mill Pond Dam | Significant | Poor | 18 | Recreation | 1881 |
| Brockton Reservoir Dam | Significant | Fair | 17 | Water Supply | 1885 |
| Shepard Pond Dam | Significant | Satisfactory | 16 | Recreation | 1880 |
| Mother Brook Diversion At Charles River | Significant | Satisfactory | 16 | Flood Risk Reduction | 1959 |
| Cocassett Lake Dam | Significant | Fair | 16 | Recreation | 1813 |
| George Street Pond Dam | Significant | Poor | 15 | ||
| Bristol Blake State Reservoir Dam | Significant | Poor | 15 | Recreation | 1700 |
| Carpenter Pond Dam | Significant | Poor | 15 | Recreation | 1888 |
| Manns Pond Dam | Significant | Fair | 14 | Recreation | |
| Crackrock Pond Dam | Significant | Poor | 14 | Recreation | 1737 |
| Hammershop Pond Dam | Significant | Satisfactory | 13 | Recreation | |
| Bolivar Pond Dam | Significant | Satisfactory | 13 | Flood Risk Reduction | 2006 |
| Forge Pond Dam | Significant | Satisfactory | 13 | Recreation | 1949 |
| Hollingsworth & Vose Dam | Significant | Fair | 12 | Other | |
| West Street Dam | Significant | Satisfactory | 12 | Recreation | |
| Straits Pond Dam | Significant | Satisfactory | 12 | Flood Risk Reduction | 1908 |
| Medway Park Dam | Significant | Satisfactory | 12 | Recreation | |
| Revere Street Dam | Significant | Satisfactory | 12 | Flood Risk Reduction | 1774 |
| Morses Pond Dam | Significant | Satisfactory | 12 | Recreation | |
| Reservoir Pond Dam | Significant | Satisfactory | 11 | Recreation | |
| Mirror Lake Dike | Significant | Poor | 11 | Recreation | |
| Memorial Pond Dam | Significant | Satisfactory | 11 | Recreation | |
| Shepard Street Dam | Significant | Satisfactory | 11 | Recreation | 1956 |
| Bound Brook Dam | Significant | Satisfactory | 11 | Water Supply | 1999 |
| Lake Mirimichi Dam | Significant | Fair | 11 | Water Supply | 1925 |
| Colburn Street Dam | Significant | Satisfactory | 11 | Recreation | |
| Nichols Road Dam | Significant | Satisfactory | 10 | Recreation | |
| Red Dam | Significant | Poor | 10 | Recreation | 1920 |
| Neponset Reservoir Dam | Significant | Satisfactory | 10 | Recreation | 1850 |
| Turner Pond Dam | Significant | Satisfactory | 10 | Recreation | 1800 |
| Lake Holbrook Dam | Significant | Poor | 10 | Recreation | 1920 |
| Silver Lake Dam | Significant | Fair | 10 | Recreation | |
| Gavins Pond Dam | Significant | Fair | 10 | Water Supply | |
| Sunset Lake Dam | Significant | Poor | 10 | Recreation | |
| Diamond Pond Dam | Significant | Poor | 10 | Recreation | |
| Glue Factory Pond West Dam | Significant | Poor | 10 | Recreation | |
| Weymouth Great Pond Dam | Significant | Satisfactory | 10 | Water Supply | 1884 |
| Turnpike Lake North Dam | Significant | Poor | 9 | ||
| Vandy's Pond Dam | Significant | Fair | 8 | Recreation | |
| Kendall Mills Dam | Significant | Fair | 8 | Other | |
| Sabrina Lake South Dam | Significant | Fair | 7 | Recreation | |
| Massapoag Lake Dam | Significant | Satisfactory | 7 | Recreation | |
| Ponkapoag Pond Dam | Significant | Fair | 7 | Recreation | 1930 |
| Danielson Mill Dam | Significant | Poor | 7 | Recreation | |
| Mirror Lake Dam | Significant | Fair | 6 | Recreation | |
| Sabrina Lake North Dam | Significant | 6 | |||
| Highland Lake Dam | Low | Poor | 20 | Recreation | 1830 |
| Hales Pond Dam | Low | Poor | 20 | Recreation | |
| Plimpton Pond Dam | Low | Poor | 19 | Recreation | 1925 |
| Neponset River Dam | Low | Poor | 15 | 1850 | |
| Borderland State Park Dam No. 2 | Low | Unsatisfactory | 14 | Recreation | 1940 |
| Bogastow Pond Dam | Low | Poor | 13 | Recreation | 1900 |
| Cochran Dam | Low | Fair | 13 | Flood Risk Reduction | 1900 |
| Paint Shop Pond Dam | Low | Satisfactory | 12 | Recreation | 2002 |
| Bush Pond No. 2 Dam | Low | Poor | 12 | Recreation | |
| Pud's Pond Dam | Low | Poor | 12 | Recreation | 1800 |
| Willow Street Bypass Dam | Low | Poor | 12 | Flood Risk Reduction | |
| Route One Pond West Dam | Low | Unsatisfactory | 11 | Fire Protection, Stock, Or Small Fish Pond | |
| West Medway Dam | Low | Poor | 11 | Flood Risk Reduction | 1850 |
| Beaumont Pond Dam | Low | Fair | 11 | Recreation | 1886 |
| Wellesley Avenue Dam | Low | Satisfactory | 11 | Water Supply | |
| Trowel Shop Pond Dam | Low | Poor | 11 | Recreation | |
| Eagle Dam | Low | Unsatisfactory | 11 | Recreation | 1920 |
| Rabbit Hill Pond Dam | Low | Fair | 10 | Recreation | 1940 |
| Box Pond Dam | Low | Unsatisfactory | 10 | Recreation | 1800 |
| Woods Pond Dam | Low | Poor | 9 | Recreation | |
| Foundry Lake Dam | Low | Fair | 9 | Recreation | 1950 |
| Delcarte Open Space Dam No. 3 | Low | Satisfactory | 9 | Recreation | |
| Upper Leach Pond Dike No. 2 | Low | Poor | 8 | Recreation | 1930 |
| Crocker Pond Dam | Low | Poor | 7 | Recreation | 1900 |
| Jenks Pond Dam | Low | Poor | 7 | Recreation | 1900 |
| Upper Leach Pond Dike No. 1 | Low | Poor | 7 | Recreation | 1930 |