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 201–225 of 356
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Horse Shoe Regulating Dam Franklin County | 32 | 1938 | Low | Not Rated |
| Holmes Street Dam Plymouth County | 12 | 1900 | Low | Fair |
| Hollingsworth & Vose Company Dam Middlesex County | 17 | 1900 | Low | Fair |
| Hobbs Pond Dam Middlesex County | 9 | 1900 | Low | Satisfactory |
| Hobart Pond Dam Plymouth County | 10 | 1693 | Low | Poor |
| Higley Brook Dam Berkshire County | 12 | 1971 | Low | Satisfactory |
| Highland Lake Dam Norfolk County | 20 | 1830 | Low | Poor |
| Hewitt Pond Dam Bristol County | 7 | — | Low | Poor |
| Heald Pond Dam Middlesex County | 8 | 1900 | Low | Poor |
| Hayes Pond Dam Berkshire County | 11 | 1840 | Low | Fair |
| Hayden Pond Dam Plymouth County | 12 | 1900 | Low | Poor |
| Hathaway Pond Dam Plymouth County | 9 | 1900 | Low | Unsatisfactory |
| Harwich Lower Reservoir Dam Plymouth County | 11 | 1900 | Low | Not Rated |
| Hartley Saw Mill Pond Dam Plymouth County | 10 | — | Low | Fair |
| Harnett Pond Dam Berkshire County | 14 | 1909 | Low | Fair |
| Harlow Brook No. 2 Dam Plymouth County | 12 | 1953 | Low | Not Rated |
| Hales Pond Dam Norfolk County | 20 | — | Low | Poor |
| Grist Mill Pond Dam Middlesex County | 18 | 1800 | Low | Fair |
| Grist Mill Dam Middlesex County | 10 | — | Low | Poor |
| Great Stone Essex County | 38 | 1848 | Low | Satisfactory |
| Great River Wall (Grw) Middlesex County | 38 | 1848 | Low | Satisfactory |
| Goodfellow Pond Dam Worcester County | 24 | 1920 | Low | Poor |
| Goldthwaite Brook Dam No. 2 Essex County | 8 | — | Low | Fair |
| Goldthwaite Brook Dam No. 1 Essex County | 8 | — | Low | Fair |
| Golden Field Pond Dam Plymouth County | 8 | 1900 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.