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 1101–1125 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Boulder Lake Dam Middlesex County | 14 | 1940 | Significant | Fair |
| Botsford Road Pond Dam Litchfield County | 10 | — | Significant | Not Rated |
| Borrelli Farm Pond Dam New Haven County | 13 | — | Significant | Not Rated |
| Border Pond Dam New London County | 6 | — | Significant | Satisfactory |
| Bone Mill Pond Dam Tolland County | 15 | — | Significant | Fair |
| Bogue Brook Reservoir Dam New London County | 21 | 1920 | Significant | Satisfactory |
| Bog Meadow Reservoir Dam New London County | 17 | 1893 | Significant | Poor |
| Boggs Pond Dam Fairfield County | 14 | 1900 | Significant | Satisfactory |
| Bochain Pond Middlesex County | 5 | — | Significant | Not Rated |
| Blue Lake Dam New London County | 10 | 1900 | Significant | Satisfactory |
| Blue Hills Flood Control Site #2 Dike Hartford County | 8 | — | High | Fair |
| Blue Hills Flood Control Site #2 Dam Hartford County | 25 | 1964 | High | Fair |
| Bloomfield Flood Control Site #3 Dam Hartford County | 29 | 1962 | High | Satisfactory |
| Bloomfield Flood Control Site #3a Dam Hartford County | 16 | 1969 | Low | Satisfactory |
| Blissville Pond Dam New London County | 11 | 1930 | Low | Not Rated |
| Blind Pond Dam Fairfield County | 9 | — | Significant | Satisfactory |
| Bleachery Dam Litchfield County | 15 | 1920 | Low | Poor |
| Blatz Pond Dam Litchfield County | 15 | — | Significant | Not Rated |
| Blast & Cast Pond Dam Hartford County | 20 | 1953 | Significant | Satisfactory |
| Blanchard Pond Dam Fairfield County | 10 | — | Significant | Not Rated |
| Bladens River Dam New Haven County | 12 | 1906 | Significant | Poor |
| Black Spruce Pond Dam Windham County | 6 | 1960 | Significant | Satisfactory |
| Black Shop Pond Dam Middlesex County | 7 | — | Significant | Satisfactory |
| Black Rock Pond Dam Litchfield County | 16 | 1945 | High | Satisfactory |
| Black Rock Dam Litchfield County | 130 | 1971 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.