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 356
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sluice Pond Dam Essex County | 12 | 1900 | Low | Poor |
| Smalley Bog Reservoir Dam Plymouth County | 7 | — | Low | Not Rated |
| Smith Pond Dam Worcester County | 8 | 1928 | Low | Unsatisfactory |
| Snow Pond Dam Worcester County | 10 | — | Low | Fair |
| South Meadow Pond Dam Plymouth County | 11 | 1900 | Low | Not Rated |
| Spot Pond Dike No. 4 Middlesex County | 10 | 1880 | Low | Satisfactory |
| Spot Pond Dike No. 5 Middlesex County | 10 | 1880 | Low | Satisfactory |
| Stateline Dam Essex County | 7 | — | Low | Poor |
| Steadman Pond Dam Berkshire County | 17 | 1921 | Low | Poor |
| Stearns Pond Dam Essex County | 11 | 1930 | Low | Fair |
| Stedman Marsh Dam Berkshire County | 8 | — | Low | Poor |
| Stevens Paper Company Lower Dam Hampden County | 30 | 1957 | Low | Poor |
| Stevens Paper Company Upper Dam Hampden County | 26 | 1901 | Low | Fair |
| Stevens Pond West Dam Essex County | 14 | 1900 | Low | Satisfactory |
| Stevens Swamp Dam Franklin County | 15 | — | Low | Poor |
| Stillwater Pond Dam Bristol County | 12 | — | Low | Poor |
| Stoddard Pond Dam Worcester County | 8 | 1920 | Low | Satisfactory |
| Stodge Meadow Pond Dam Worcester County | 15 | 1863 | Low | Fair |
| Streeter Pond Dam Worcester County | 12 | 1920 | Low | Poor |
| Stringer Dam Worcester County | 8 | 1900 | Low | Fair |
| Stuart Pond Dam Worcester County | 10 | 1928 | Low | Poor |
| Sudbury River Dam Middlesex County | 7 | — | Low | Poor |
| Sunset Lake Dam Worcester County | 12 | 1900 | Low | Satisfactory |
| Sweets Pond Dam Bristol County | 12 | 1934 | Low | Poor |
| Taft Pond Dam Worcester County | 13 | — | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.