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 226–250 of 319
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Pontoosuc Lake Dam Berkshire County | 20 | 1866 | High | Satisfactory |
| Powdermill Brook Pl-566 Flood Control Dam Hampden County | 48 | 1962 | High | Fair |
| Pratts Pond Dam Worcester County | 12 | — | High | Fair |
| Provin Mountain Reservoir Dam Hampden County | 30 | 1910 | High | Satisfactory |
| Putnamville Reservoir Dam Essex County | 37 | 1954 | High | Satisfactory |
| Putnamville Reservoir East Dike Essex County | 24 | 1954 | High | Satisfactory |
| Putnamville Reservoir South Dike Essex County | 7 | 1954 | High | Satisfactory |
| Putnamville Reservoir West Dike Essex County | 26 | 1954 | High | Satisfactory |
| Quabbin Goodnough Dike Hampshire County | 135 | 1938 | High | Satisfactory |
| Quabbin Winsor Dam Hampshire County | 170 | 1939 | High | Satisfactory |
| Quequechan Control Structure Bristol County | 25 | 1963 | High | Satisfactory |
| Quinapoxet Reservoir Dam Worcester County | 45 | 1953 | High | Satisfactory |
| Ramshorn Pond Dam Worcester County | 25 | 1825 | High | Satisfactory |
| Red Bridge Hampden County | 51 | 1901 | High | Fair |
| Red Dam Worcester County | 15 | — | High | Satisfactory |
| Rice City Pond Dam Worcester County | 25 | 1880 | High | Fair |
| Riiska Brook Dam Berkshire County | 19 | 1952 | High | Poor |
| Rivulet Village Pond Dam Worcester County | 16 | — | High | Fair |
| Roberts Meadow Lower Reservoir Dam Hampshire County | 23 | 1875 | High | Fair |
| Rochdale Pond Dam Worcester County | 20 | — | High | Poor |
| Rockwell Pond Dam Worcester County | 20 | 1900 | High | Fair |
| Rood Hill Road Ponds Dam Berkshire County | 9 | — | High | Not Rated |
| Rosemary Lake Dam Norfolk County | 12 | 1830 | High | Satisfactory |
| Route 25 No. 1 Dam Plymouth County | 16 | 1964 | High | Satisfactory |
| Russell Pond Dam Plymouth County | 16 | — | High | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.