Connecticut Dams
1,225 dams tracked by the National Inventory of Dams
Total Dams
1,225
High Hazard
236
19.3%
Poor / Unsatisfactory
126
Average Age
115 yrs
Hazard Classification
High236 (19.3%)
Significant936 (76.4%)
Low53 (4.3%)
Condition Assessment
Satisfactory474 (38.7%)
Fair254 (20.7%)
Poor / Unsatisfactory126 (10.3%)
Not Rated371 (30.3%)
Federal
9
State
169
Local
254
Private
697
Tallest Dams
- Colebrook River Dam223 ft
- Mad River Flood Control Dam178 ft
- Nepaug Dam156 ft
- Shepaug 138 ft
- Saville Dam137 ft
High Hazard Dams
- Colebrook River DamHigh
- Mad River Flood Control DamHigh
- Nepaug DamHigh
- Shepaug High
- Saville DamHigh
Poor Condition Dams
All Dams in Connecticut
Showing 851–875 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Black Shop Pond Dam Middlesex County | 7 | — | Significant | Satisfactory |
| Blackhouse Road Pond Dam Fairfield County | 9 | — | Significant | Poor |
| Bissonette Pond Dam Tolland County | 6 | 1930 | Significant | Satisfactory |
| Bishop Swamp Dam Tolland County | 9 | — | Significant | Satisfactory |
| Bishops Pond Dam New Haven County | 7 | 1955 | Significant | Poor |
| Bishops Pond Dam New Haven County | 13 | 1900 | Significant | Satisfactory |
| Bird Pond Dam Litchfield County | 9 | — | Significant | Fair |
| Birch Mill Pond Dam Middlesex County | 9 | 1850 | Significant | Fair |
| Billings Lake Dam New London County | 12 | 1900 | Significant | Satisfactory |
| Billings Avery Dam New London County | 19 | 1968 | Significant | Satisfactory |
| Big Meadow Pond A.K.A. Judd Pond Dam Litchfield County | 6 | 1860 | Significant | Satisfactory |
| Bigelow Pond Dam Litchfield County | 15 | 1900 | Significant | Not Rated |
| Bigelow Pond Dam Tolland County | 21 | 1941 | Significant | Satisfactory |
| Bibbins Pond Dam Windham County | 9 | 1880 | Significant | Satisfactory |
| Bevins Pond Dam Middlesex County | 14 | 1898 | Significant | Fair |
| Betts Pond Dam Fairfield County | 6 | — | Significant | Not Rated |
| Bethels Pond Dam Fairfield County | 3 | 1937 | Significant | Fair |
| Berlin Fish & Game Dam Middlesex County | 20 | 1972 | Significant | Not Rated |
| Bennetts Pond Windham County | 2 | — | Significant | Not Rated |
| Benedict Pond Dam Litchfield County | 8 | 1920 | Significant | Satisfactory |
| Bendels Pond Dam Fairfield County | 18 | — | Significant | Satisfactory |
| Bell Shop Dam Middlesex County | 20 | — | Significant | Satisfactory |
| Bell Pond Dam Hartford County | 14 | 1900 | Significant | Poor |
| Belden Dam Windham County | 10 | 1900 | Significant | Not Rated |
| Beckwith Pond Dam New London County | 9 | — | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.