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 51–75 of 616
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Wade Lake Dam Hampden County | 10 | — | Significant | Fair |
| Wachusett Lake Dam Worcester County | 4 | 1905 | Significant | Fair |
| Vorces Pond Dam Franklin County | 12 | 1892 | Significant | Fair |
| Vistron Dam Hampshire County | 25 | — | Significant | Fair |
| Victory Lane Dam Middlesex County | 16 | — | Significant | Poor |
| Vandy'S Pond Dam Norfolk County | 8 | — | Significant | Fair |
| Valley Pond Dike Middlesex County | 11 | 1961 | Significant | Satisfactory |
| Valley Pond Dam Middlesex County | 14 | 1962 | Significant | Satisfactory |
| Usmc Pond Upper Dam Essex County | 17 | 1904 | Significant | Fair |
| Upper Westborough Reservoir Dam Worcester County | 15 | 1887 | Significant | Fair |
| Upper Van Horn Reservoir Dam Hampden County | 31 | 1848 | Significant | Poor |
| Upper Tucker Pond South Dam Worcester County | 22 | — | Significant | Poor |
| Upper Tucker Pond East Dam Worcester County | 16 | — | Significant | Poor |
| Upper Sibley Pond Dam Worcester County | 12 | — | Significant | Poor |
| Upper Shawme Lake Dam Barnstable County | 12 | — | Significant | Satisfactory |
| Upper Sawmill Pond Dam Worcester County | 16 | 1850 | Significant | Fair |
| Upper Reservoir Dam Franklin County | 17 | — | Significant | Fair |
| Upper Reservoir Dam Worcester County | 12 | — | Significant | Fair |
| Upper Porter Pond Dam Plymouth County | 12 | 1940 | Significant | Fair |
| Upper Naukeag Lake Dam Worcester County | 8 | 1875 | Significant | Satisfactory |
| Upper Mystic Lake Dam Middlesex County | 16 | 1860 | Significant | Satisfactory |
| Upper Lynde Basin Dam Worcester County | 15 | 1924 | Significant | Poor |
| Upper Highland Lake Dike Hampshire County | 15 | 1872 | Significant | Satisfactory |
| Upper Glen Reservoir Dam Franklin County | 59 | 1904 | Significant | Satisfactory |
| Upper Flint Pond Dam Middlesex County | 9 | — | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.