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 126–150 of 464
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Richard Clapp Dam Franklin County | 11 | 1955 | Significant | Fair |
| Riceville Pond Dam Worcester County | 13 | 1950 | Low | Fair |
| Rice City Pond Dam Worcester County | 25 | 1880 | High | Fair |
| Reservoir No. 6 Dam Worcester County | 16 | 1905 | Low | Fair |
| Reed Mill Pond Dam Plymouth County | 10 | — | Significant | Fair |
| Red Brook Pond Dam Barnstable County | 13 | — | Significant | Fair |
| Red Bridge Hampden County | 51 | 1901 | High | Fair |
| Rabbit Hill Pond Dam Norfolk County | 10 | 1940 | Low | Fair |
| Pulpit Rock Pond Dam and Auxiliary Spillway Hampden County | 20 | — | Significant | Fair |
| Pratt'S Pond Dam Worcester County | 11 | — | Significant | Fair |
| Pratts Pond Dam Worcester County | 12 | — | High | Fair |
| Powdermill Brook Pl-566 Flood Control Dam Hampden County | 48 | 1962 | High | Fair |
| Ponkapoag Pond Dam Norfolk County | 7 | 1930 | Significant | Fair |
| Pondville Pond Dam Worcester County | 15 | 1875 | Significant | Fair |
| Pond 3 Dam Worcester County | 7 | — | Significant | Fair |
| Pond 1 Dam Worcester County | 12 | 1974 | Significant | Fair |
| Plunkett Reservoir Dam Berkshire County | 25 | 1875 | High | Fair |
| Plantain Pond Dam Berkshire County | 15 | 1947 | Significant | Fair |
| Pine Island Lake Dike Hampshire County | 15 | 1920 | Significant | Fair |
| Pine Hill Reservoir Dam Worcester County | 70 | 1924 | High | Fair |
| Pine Brook Dam Worcester County | 7 | 1950 | Low | Fair |
| Pillings Pond Dam Essex County | 6 | — | Significant | Fair |
| Pilchs No. 3 Dam Hampshire County | 15 | 1948 | Low | Fair |
| Pikes Pond Dam Worcester County | 10 | 1999 | Low | Fair |
| Pierce Pond Dam Worcester County | 15 | 1911 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.