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 301–325 of 356
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Tannery Pond Worcester County | 10 | 1936 | Low | Satisfactory |
| The Arm Pond Dam Plymouth County | 14 | 1959 | Low | Not Rated |
| Thompson Lake Dam Hampden County | 13 | 1900 | Low | Fair |
| Thousand Acre Reservoir Dam Worcester County | 27 | 1939 | Low | Fair |
| Towne Pond Dam Essex County | 14 | 1975 | Low | Poor |
| Triphammer Pond Dam Plymouth County | 11 | 1996 | Low | Poor |
| Trout Pond Dam Hampden County | 11 | 1920 | Low | Unsatisfactory |
| Trowel Shop Pond Dam Norfolk County | 11 | — | Low | Poor |
| Tupperware Worcester County | 12 | 1904 | Low | Satisfactory |
| Turners Falls Dike Franklin County | 10 | 1905 | Low | Satisfactory |
| Unquomonk Upper Reservoir Dam Hampshire County | 27 | 1903 | Low | Satisfactory |
| Upper Artichoke Reservoir Dam Essex County | 15 | 1920 | Low | Satisfactory |
| Upper Bemis Pond Dam Hampden County | 17 | 1954 | Low | Poor |
| Upper Leach Pond Dike No. 1 Norfolk County | 7 | 1930 | Low | Poor |
| Upper Leach Pond Dike No. 2 Norfolk County | 8 | 1930 | Low | Poor |
| Upper Meadow Pond Dam and Dike Worcester County | 14 | 1961 | Low | Fair |
| Upper Millpond Dam Essex County | 9 | 1920 | Low | Fair |
| Upper Reservoir Dam Barnstable County | 7 | 1900 | Low | Fair |
| Upper Spectacle Pond Dam Berkshire County | 23 | 1935 | Low | Fair |
| Vinica Pond Dam Hampden County | 13 | — | Low | Poor |
| Waban Hill Reservoir Dam Middlesex County | 24 | 1900 | Low | Satisfactory |
| Walker Pond Dam Worcester County | 10 | 1957 | Low | Poor |
| Wallace Pond Dam Worcester County | 15 | 1950 | Low | Satisfactory |
| Wallis Pond Dam Worcester County | 8 | 1900 | Low | Fair |
| Wallis Pond Dam Worcester County | 16 | — | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.