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 651–675 of 1,291
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lower Sibley Pond Dam Worcester County | 14 | — | Significant | Poor |
| Lower Spectacle Pond Dam Berkshire County | 11 | — | Low | Poor |
| Lower Stoneville Pond Dam Worcester County | 15 | 1904 | High | Fair |
| Lower Van Horn Reservoir Dam Hampden County | 52 | 1848 | High | Satisfactory |
| Lowes Pond Dam Worcester County | 15 | — | Significant | Unsatisfactory |
| Ludlow Reservoir Dam Hampden County | 19 | 1877 | High | Satisfactory |
| Lumbert Pond Dam Barnstable County | 11 | — | Significant | Poor |
| Lunden Dam Hampden County | 10 | 1958 | Significant | Fair |
| Luther Reservoir Dam Bristol County | 16 | — | Low | Satisfactory |
| Lynde Brook Reservoir Dam Worcester County | 61 | 1876 | High | Satisfactory |
| Lynde Brook Reservoir Dike Worcester County | 17 | 1876 | High | Fair |
| Lynn Reservoir Dam Essex County | 10 | 1872 | Significant | Satisfactory |
| Lynn Waterways Dam Essex County | 8 | 1915 | Low | Fair |
| Magoun Pond Dam Plymouth County | 16 | 1991 | Significant | Satisfactory |
| Mahar Regional School Dam Franklin County | 10 | 1956 | Significant | Satisfactory |
| Mahoney Pond Dam Worcester County | 9 | 1964 | Significant | Fair |
| Main Street Dam Middlesex County | 18 | 1882 | High | Poor |
| 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 |
| Manchaug Pond Dam Worcester County | 28 | 1836 | High | Fair |
| Manchester Pond Reservoir Dam Bristol County | 28 | 1963 | High | Fair |
| Manchester Pond Reservoir East Dike Bristol County | 12 | 1963 | High | Poor |
| Manchester Pond Reservoir South Dike Bristol County | 16 | 1963 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.