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 426–450 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Black Rock Pond Dam Litchfield County | 16 | 1945 | High | Satisfactory |
| Bissonette Pond Dam Tolland County | 6 | 1930 | Significant | Satisfactory |
| Bishop Swamp Dam Tolland County | 9 | — | Significant | Satisfactory |
| Bishops Pond Dam New Haven County | 13 | 1900 | Significant | Satisfactory |
| Billings Lake Dam New London County | 12 | 1900 | Significant | Satisfactory |
| Billings Avery Dam New London County | 19 | 1968 | Significant | Satisfactory |
| Big Pond Dam Windham County | 20 | 1870 | High | Satisfactory |
| Big Meadow Pond A.K.A. Judd Pond Dam Litchfield County | 6 | 1860 | Significant | Satisfactory |
| Bigelow Pond Dam Tolland County | 21 | 1941 | Significant | Satisfactory |
| Bibbins Pond Dam Windham County | 9 | 1880 | Significant | Satisfactory |
| 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 |
| Belleview Lake Dam New Haven County | 38 | 1899 | High | Satisfactory |
| Beckwith Pond Dam New London County | 9 | — | Significant | Satisfactory |
| Beaver Dam Pond Hartford County | 8 | — | Significant | Satisfactory |
| Beaver Dam Lake Dam Fairfield County | 47 | 1901 | High | Satisfactory |
| Beaupres Pond Dam Windham County | 12 | 1952 | Significant | Satisfactory |
| Bear Hill Pond Dam Windham County | 10 | — | Significant | Satisfactory |
| Beach Pond Dam New London County | 12 | 1885 | Significant | Satisfactory |
| Beachdale Pond Dam New London County | 9 | — | Significant | Satisfactory |
| Batterson Park Pond Dam Hartford County | 25 | 1878 | High | Satisfactory |
| Bashan Lake Dam Middlesex County | 24 | 1939 | Significant | Satisfactory |
| Bantam Pond Dam Litchfield County | 14 | 1970 | Significant | Satisfactory |
| Bantam Hydro Dam Litchfield County | 20 | 1945 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.