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 |
|---|---|---|---|---|
| Freeman Lake Dam Middlesex County | 29 | 1976 | Significant | Satisfactory |
| French Pond Dam Bristol County | 12 | 1760 | Significant | Poor |
| Frye Pond Dam Essex County | 12 | 1932 | Significant | Unsatisfactory |
| Fulling Mill Pond Dam Plymouth County | 8 | — | Significant | Fair |
| Garside Reservoir Dam Plymouth County | 5 | 1909 | Significant | Fair |
| Gaston Pond Dam Worcester County | 14 | 1915 | Significant | Unsatisfactory |
| Gavins Pond Dam Norfolk County | 10 | — | Significant | Fair |
| George Street Pond Dam Norfolk County | 15 | — | Significant | Poor |
| Glen Charles Pond Dam Plymouth County | 19 | — | Significant | Satisfactory |
| Glue Factory Pond West Dam Norfolk County | 10 | — | Significant | Poor |
| Gore Pond Dam Worcester County | 6 | — | Significant | Poor |
| Government Mill Dam Berkshire County | 22 | 1901 | Significant | Satisfactory |
| Granite Lake Dam Worcester County | 18 | 1924 | Significant | Satisfactory |
| Graves Pond Dam Worcester County | 7 | 1970 | Significant | Satisfactory |
| Greenes Pond Dam Worcester County | 13 | 1925 | Significant | Poor |
| Greenfield Electric Light & Power Dam Franklin County | 21 | — | Significant | Fair |
| Greenwater Pond Dam Berkshire County | 18 | 1944 | Significant | Fair |
| Greenwood Pond Dam Worcester County | 8 | — | Significant | Satisfactory |
| Greylock Greenhouse Dam Berkshire County | 7 | — | Significant | Fair |
| Griswold Lower Pond Dam Essex County | 12 | 1983 | Significant | Fair |
| Griswold Pond Dam Essex County | 12 | 1918 | Significant | Fair |
| Hackett'S Pond Dam Plymouth County | 12 | — | Significant | Satisfactory |
| Hallockville Pond Dam Franklin County | 15 | — | Significant | Fair |
| Hammershop Pond Dam Norfolk County | 13 | — | Significant | Satisfactory |
| Hammond Pond Dam Hampshire County | 17 | — | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.