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 1–25 of 319
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Aaron River Dam Norfolk County | 29 | 1978 | High | Satisfactory |
| Abbey Lake Dam Berkshire County | 40 | 1967 | High | Satisfactory |
| Allen Reservoir Pl-566 Flood Control Dam Norfolk County | 21 | 1981 | High | Satisfactory |
| Ames Pond Dam Middlesex County | 11 | — | High | Fair |
| Ames Pond Dike A Middlesex County | 11 | — | High | Satisfactory |
| Arlington Reservoir Dam Middlesex County | 14 | 1872 | High | Fair |
| Arm Brook Pl-566 Flood Control Dam Hampden County | 58 | 1963 | High | Satisfactory |
| Ashfield Lake Dam Franklin County | 16 | 1897 | High | Satisfactory |
| Ashland Reservoir Dam Middlesex County | 59 | 1900 | High | Satisfactory |
| Ashley Lake Reservoir Dam Berkshire County | 22 | 1901 | High | Satisfactory |
| Ashmere Lake Dam Berkshire County | 34 | 1875 | High | Satisfactory |
| Atkins Reservoir Dam Franklin County | 33 | 1930 | High | Fair |
| Babson Reservoir Dam Essex County | 43 | 1930 | High | Satisfactory |
| Barre Falls Dam Worcester County | 69 | 1958 | High | Not Available |
| Barre Falls Dam - Dike 1 Worcester County | 23 | 1958 | High | Not Available |
| Barre Falls Dam - Dike 2 Worcester County | 38 | 1958 | High | Not Available |
| Barre Falls Dam - Dike 3 Worcester County | 48 | 1958 | High | Not Available |
| Barre Reservoir Dam & Dike Worcester County | 15 | — | High | Poor |
| Bel Air Dam Berkshire County | 27 | — | High | Unsatisfactory |
| Belmont Reservoir Dam Berkshire County | 29 | 1889 | High | Fair |
| Bickford Pond Dam Worcester County | 51 | 1971 | High | Fair |
| Bickford Pond Dike Worcester County | 17 | 1971 | High | Satisfactory |
| Big Bearhole Pond Dam Bristol County | 20 | 1920 | High | Satisfactory |
| Birch Hill Dam Worcester County | 49 | 1942 | High | Not Available |
| Birch Pond Dam Essex County | 25 | 1873 | High | Fair |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.