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 356
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Borderland State Park Dam No. 2 Norfolk County | 14 | 1940 | Low | Unsatisfactory |
| Bog Pond Dam Berkshire County | 14 | 1937 | Low | Fair |
| Bogastow Pond Dam Norfolk County | 13 | 1900 | Low | Poor |
| Bleachery Dam Middlesex County | 8 | 1900 | Low | Satisfactory |
| Blackstone River Saranac Dam At Canal Street Worcester County | 13 | 1910 | Low | Fair |
| Bixby Reservoir Dam Middlesex County | 9 | 1950 | Low | Satisfactory |
| Betty Pond Dam Worcester County | 9 | — | Low | Satisfactory |
| Besse Bog Reservoir Dam Plymouth County | 17 | 1945 | Low | Not Rated |
| Berle Pond Dam Berkshire County | 12 | 1920 | Low | Not Rated |
| Berkshire Trout Pond Berkshire County | 9 | 1946 | Low | Fair |
| Ben Smith Dam Middlesex County | 9 | 1870 | Low | Satisfactory |
| Benedict Pond Dam Berkshire County | 13 | 1934 | Low | Satisfactory |
| Bemis Pond Dam Worcester County | 9 | — | Low | Satisfactory |
| Beaver Dam Pond Dam Plymouth County | 13 | 1928 | Low | Not Rated |
| Beaumont Pond Dam Norfolk County | 11 | 1886 | Low | Fair |
| Beaton-Lebaron Reservoir Dam Plymouth County | 9 | 1920 | Low | Not Rated |
| Bear Swamp - North Dike Franklin County | 155 | 1974 | Low | Satisfactory |
| Bauer Pond Dam Berkshire County | 7 | — | Low | Satisfactory |
| Bartlett Pond Dam Worcester County | 19 | 1885 | Low | Fair |
| Bartlett Pond Dam Plymouth County | 8 | — | Low | Not Rated |
| Barretts Mill Road Dam Middlesex County | 9 | — | Low | Satisfactory |
| Barbieri Pond Dam Berkshire County | 20 | 1968 | Low | Fair |
| Atwood Upper Reservoir No. 2 Dam Plymouth County | 10 | 1937 | Low | Satisfactory |
| Atwater Pond Dam Berkshire County | 12 | 1890 | Low | Fair |
| Atkins Reservoir Dike Franklin County | 20 | 1932 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.