Massachusetts Dams
1,291 dams tracked by the National Inventory of Dams
Total Dams
1,291
High Hazard
319
24.7%
Poor / Unsatisfactory
336
Average Age
112 yrs
Hazard Classification
High319 (24.7%)
Significant616 (47.7%)
Low356 (27.6%)
Condition Assessment
Satisfactory441 (34.2%)
Fair464 (35.9%)
Poor / Unsatisfactory336 (26.0%)
Not Rated50 (3.9%)
Federal
15
State
211
Local
585
Private
451
Tallest Dams
- Cobble Mountain Reservoir Dam245 ft
- Quabbin Winsor Dam170 ft
- Littleville Dam164 ft
- Bear Swamp - North Dike 155 ft
- Knightville Dam150 ft
High Hazard Dams
Poor Condition Dams
All Dams in Massachusetts
Showing 101–125 of 319
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Goose Cove Southwest Dike Essex County | 9 | 1963 | High | Fair |
| Goose Pond Dam Berkshire County | 28 | 1840 | High | Satisfactory |
| Grandin Reservoir Dam Franklin County | 37 | 1935 | High | Satisfactory |
| Granville Reservoir Dam Hampden County | 85 | 1930 | High | Satisfactory |
| Great Pond Dam Norfolk County | 10 | 1945 | High | Fair |
| Great Pond Upper Reservoir Dam Norfolk County | 18 | 1942 | High | Fair |
| Green Hill Pond Dam Worcester County | 25 | 1850 | High | Satisfactory |
| Greenville Pond Dam Worcester County | 22 | 1912 | High | Fair |
| Greenwood Lake Dam Bristol County | 18 | 1854 | High | Satisfactory |
| Hager Pond Dam Middlesex County | 13 | 1710 | High | Unsatisfactory |
| Hamilton Reservoir Dam Hampden County | 17 | — | High | Fair |
| Haskell Pond Dam Essex County | 43 | 1903 | High | Poor |
| Hawkes Pond Outlet Dam Essex County | 26 | 1895 | High | Fair |
| Hebronville Pond Dam Bristol County | 14 | 1875 | High | Satisfactory |
| Hickory Hills Lake Dam Worcester County | 18 | — | High | Satisfactory |
| Hillside Beach Dam Hampshire County | 21 | — | High | Fair |
| Hodges Village Dam Worcester County | 54 | 1959 | High | Not Available |
| Holden Reservoir Dam No. 1 Worcester County | 47 | 1883 | High | Fair |
| Holden Reservoir Dam No. 2 Worcester County | 57 | 1900 | High | Satisfactory |
| Holyoke - Overflow No. 1 Hampden County | 30 | 1850 | High | Satisfactory |
| Hop Brook Dam Worcester County | 23 | 1962 | High | Satisfactory |
| Hopkinton Reservoir Dam Middlesex County | 58 | 1891 | High | Satisfactory |
| Hopkinton State Park Swimming Pool Dam Middlesex County | 16 | 1967 | High | Satisfactory |
| Hoppin Hill Reservoir Dam Bristol County | 27 | 1910 | High | Satisfactory |
| Houghton Pond Dam Middlesex County | 10 | 1898 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.