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 176–200 of 356
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Laurel Lake Dam Franklin County | 9 | — | Low | Fair |
| Lawrence Reservoir Dam Essex County | 28 | 1875 | Low | Satisfactory |
| Leach Pond Dam Bristol County | 7 | — | Low | Unsatisfactory |
| Lee Reservoir Dam Worcester County | 12 | — | Low | Satisfactory |
| Leonards Pond Dam Plymouth County | 15 | — | Low | Fair |
| Liberman'S Pond Dam Berkshire County | 12 | 1985 | Low | Satisfactory |
| Lithia Springs Reservoir Dam Hampshire County | 26 | 1948 | Low | Fair |
| Little Galilee Pond Dam Hampshire County | 15 | — | Low | Poor |
| Longham Reservoir Dam Essex County | 15 | 1975 | Low | Satisfactory |
| Long Pond Dam Middlesex County | 8 | 1900 | Low | Fair |
| Long Pond Dam Barnstable County | 7 | 1966 | Low | Fair |
| Lovewell Pond Dam Worcester County | 12 | — | Low | Fair |
| Lowe Pond Outlet Dam Essex County | 10 | 1960 | Low | Fair |
| Lower Artichoke Reservoir Dam Essex County | 10 | 1920 | Low | Poor |
| Lower Flint Pond Dam Middlesex County | 28 | — | Low | Fair |
| Lower Millpond Dam Essex County | 11 | — | Low | Unsatisfactory |
| Lower Mill Pond Dam Barnstable County | 7 | 1920 | Low | Satisfactory |
| Lower Spectacle Pond Dam Berkshire County | 11 | — | Low | Poor |
| Luther Reservoir Dam Bristol County | 16 | — | Low | Satisfactory |
| Lynn Waterways Dam Essex County | 8 | 1915 | Low | Fair |
| Makepeace No. 1 Dam Plymouth County | 9 | 1952 | Low | Not Rated |
| Makepeace No. 2 Dam Plymouth County | 10 | 1900 | Low | Not Rated |
| Makepeace No. 3 Dam Plymouth County | 12 | — | Low | Not Rated |
| Makepeace No. 4 Dam Plymouth County | 11 | 1900 | Low | Not Rated |
| Maple Spring No. 2 Dam Plymouth County | 11 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.