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 326–350 of 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rising Paper Company Dam Berkshire County | 38 | — | Significant | Satisfactory |
| Riverdale Mills Worcester County | 10 | 1957 | Low | Satisfactory |
| Robin Hood Lake Dam Berkshire County | 17 | 2013 | Significant | Satisfactory |
| Rosemary Lake Dam Norfolk County | 12 | 1830 | High | Satisfactory |
| Round Pond Dam Berkshire County | 19 | 1963 | Low | Satisfactory |
| Route 25 No. 1 Dam Plymouth County | 16 | 1964 | High | Satisfactory |
| Rudd Pond Dam and Dike Berkshire County | 12 | 1920 | Low | Satisfactory |
| Russell Hampden County | 30 | 1905 | Low | Satisfactory |
| Russell Harrington Mill Pond Dam Worcester County | 20 | 1917 | Significant | Satisfactory |
| Russell Mill Pond Plymouth County | 25 | 1898 | Low | Satisfactory |
| Russell Mill Pond Dam Middlesex County | 18 | 1954 | Significant | Satisfactory |
| Russell Pond Dam Plymouth County | 10 | — | Significant | Satisfactory |
| Salisbury Pond Dam Worcester County | 13 | 1953 | Significant | Satisfactory |
| Santuit Pond Dam Barnstable County | 8 | — | Significant | Satisfactory |
| Sargent Pond Dam Worcester County | 15 | — | Significant | Satisfactory |
| Schencks Pond Dam Middlesex County | 22 | 1940 | High | Satisfactory |
| Schoolhouse Lake Dam Berkshire County | 63 | 1986 | High | Satisfactory |
| Scout Pond Dam Hampshire County | 15 | 1937 | Low | Satisfactory |
| Shaker Mill Pond Dam Berkshire County | 18 | 1910 | High | Satisfactory |
| Shawville Pond Dam Hampden County | 13 | — | Significant | Satisfactory |
| Shepard Pond Dam Norfolk County | 16 | 1880 | Significant | Satisfactory |
| Shepard Street Dam Norfolk County | 11 | 1956 | Significant | Satisfactory |
| Sherman Franklin County | 110 | 1927 | High | Satisfactory |
| Silver Lake Dam Hampden County | 15 | 1878 | Significant | Satisfactory |
| Simonds Pond Dam Worcester County | 32 | — | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.