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 801–825 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Tankerhoosen Lake North Dam Tolland County | 16 | 1830 | Significant | Poor |
| Tanner'S Pond Dam Litchfield County | 8 | 1917 | Significant | Not Rated |
| Tarrywile Lake Dam Fairfield County | 12 | 1900 | Significant | Satisfactory |
| Tatros Pond Dam Litchfield County | 6 | — | Significant | Poor |
| Taylors Pond Dam Fairfield County | 9 | — | Significant | Poor |
| Terryville Reservoir #3 Dam Litchfield County | 20 | 1920 | Significant | Fair |
| Tetram Pond Dam Middlesex County | 15 | 1923 | Significant | Fair |
| Tetreault Pond Windham County | 9 | 1900 | Significant | Not Rated |
| Thayers Pond Dam Fairfield County | 10 | 1920 | Significant | Not Rated |
| Thrushwood Lake Dam Fairfield County | 12 | — | Significant | Fair |
| Tiffany Brook Pond Dam Middlesex County | 4 | — | Significant | Not Rated |
| Timber Lake Dam Fairfield County | 14 | 1957 | Significant | Fair |
| Tinker Pond Dam Tolland County | 10 | 1900 | Significant | Satisfactory |
| Tobey Pond Dam Litchfield County | 12 | 1870 | Significant | Not Rated |
| Todds Pond New Haven County | 4 | — | Significant | Not Rated |
| Tomlinson Lake Dam Litchfield County | 10 | 1950 | Significant | Poor |
| Topping Road Dam Fairfield County | 15 | 1920 | Significant | Poor |
| Towantic Pond Dam New Haven County | 18 | 1870 | Significant | Poor |
| Town Millpond Dam New Haven County | 4 | — | Significant | Not Rated |
| Tracey Pond Dam Hartford County | 12 | — | Significant | Poor |
| Trading Cove Pond Dam New London County | 32 | 1900 | Significant | Fair |
| Trouble Pond Dam Middlesex County | 7 | — | Significant | Poor |
| Tuller Reservoir Dam Hartford County | 46 | 1900 | Significant | Fair |
| Tunnel Dam Hydro Station New London County | 32 | 1906 | Significant | Satisfactory |
| Turkey Hill Reservoir Dam & Dike Middlesex County | 10 | — | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.