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 276–300 of 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Iron Hill Dam Norfolk County | 26 | — | High | Satisfactory |
| Indian Orchard Hampden County | 30 | 1846 | High | Satisfactory |
| Indian Lake Dam Berkshire County | 15 | 1975 | High | Satisfactory |
| Ice House Middlesex County | 15 | 1906 | Low | Satisfactory |
| Hycrest Farm Pond Dam Worcester County | 11 | 1949 | Significant | Satisfactory |
| Hunts Pond Worcester County | 15 | 1936 | Low | Satisfactory |
| Hovey Pond Dam Worcester County | 23 | 1870 | High | Satisfactory |
| Horse Pond Dam Worcester County | 34 | — | Significant | Satisfactory |
| Horse Pond Dam Worcester County | 38 | 1964 | Significant | Satisfactory |
| Hoppin Hill Reservoir Dam Bristol County | 27 | 1910 | High | Satisfactory |
| Hopkinton State Park Swimming Pool Dam Middlesex County | 16 | 1967 | High | Satisfactory |
| Hopkinton Reservoir Dam Middlesex County | 58 | 1891 | High | Satisfactory |
| Hop Brook Dam Worcester County | 23 | 1962 | High | Satisfactory |
| Holyoke - Overflow No. 1 Hampden County | 30 | 1850 | High | Satisfactory |
| Holden Reservoir Dam No. 2 Worcester County | 57 | 1900 | High | Satisfactory |
| Hobbs Pond Dam Middlesex County | 9 | 1900 | Low | Satisfactory |
| Higley Brook Dam Berkshire County | 12 | 1971 | Low | Satisfactory |
| Highland Commons Pond B Dam & Dike Worcester County | 50 | 2010 | Significant | Satisfactory |
| High Hill Reservoir Dam Bristol County | 25 | 1898 | Significant | Satisfactory |
| Hickory Hills Lake Dam Worcester County | 18 | — | High | Satisfactory |
| Hemlock Gorge Spillway Dike Middlesex County | 15 | — | Significant | Satisfactory |
| Hebronville Pond Dam Bristol County | 14 | 1875 | High | Satisfactory |
| Hatchet Pond Dam Worcester County | 12 | — | Significant | Satisfactory |
| Hammershop Pond Dam Norfolk County | 13 | — | Significant | Satisfactory |
| Hackett'S Pond Dam Plymouth County | 12 | — | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.