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 176–200 of 616
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Riley Pond Dam Worcester County | 8 | — | Significant | Fair |
| Ridgely Pond Dam Worcester County | 12 | — | Significant | Fair |
| Richmond Pond Dam Berkshire County | 14 | — | Significant | Poor |
| Richard Clapp Dam Franklin County | 11 | 1955 | Significant | Fair |
| Revere Street Dam Norfolk County | 12 | 1774 | Significant | Satisfactory |
| Reservoir Pond Dam Norfolk County | 11 | — | Significant | Satisfactory |
| Reservoir No. 4 Dam Worcester County | 30 | 1965 | Significant | Satisfactory |
| Reed Mill Pond Dam Plymouth County | 10 | — | Significant | Fair |
| Red Dam Norfolk County | 10 | 1920 | Significant | Poor |
| Red Brook Road Dam Barnstable County | 8 | 1930 | Significant | Poor |
| Red Brook Pond Dam Barnstable County | 13 | — | Significant | Fair |
| Recreation Pond Dam Worcester County | 7 | — | Significant | Satisfactory |
| Rawson Hill Brook Dam Worcester County | 16 | 1963 | Significant | Satisfactory |
| Ramsdall Pond Dam Worcester County | 9 | — | Significant | Poor |
| Rail Road Pond Dam Worcester County | 10 | — | Significant | Poor |
| Quinsigamond Pond Dam Worcester County | 12 | 1896 | Significant | Poor |
| Queensville Pond Dam Hampshire County | 22 | 2010 | Significant | Poor |
| Queen Lake Dam Worcester County | 9 | 1824 | Significant | Satisfactory |
| Pumping Station Dam Franklin County | 22 | — | Significant | Satisfactory |
| Pulpit Rock Pond Dam and Auxiliary Spillway Hampden County | 20 | — | Significant | Fair |
| Prospect Lake Dam Berkshire County | 6 | — | Significant | Poor |
| Prospect Hill Reservoir Dam Bristol County | 54 | 1956 | Significant | Satisfactory |
| Prindle Lake Dam Worcester County | 11 | 1952 | Significant | Satisfactory |
| Pratt'S Pond Dam Worcester County | 11 | — | Significant | Fair |
| Porter Lake Dam Hampden County | 24 | 1919 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.