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 1051–1075 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Tadma Pond Dam New London County | 22 | 1966 | Significant | Poor |
| Taftville Hydro Dam #4 New London County | 41 | 1867 | High | Satisfactory |
| Taftville Reservoir #1 Dam New London County | 30 | 1880 | Significant | Fair |
| Taftville Reservoir #2 Dam New London County | 30 | 1910 | Significant | Poor |
| Talcott Flood Control Dam #1 Hartford County | 30 | 1964 | High | Satisfactory |
| Talcott Flood Control Dam #2 Hartford County | 19 | 1964 | High | Satisfactory |
| Talmages Ice Pond Dam New Haven County | 2 | — | Significant | Not Rated |
| Tankerhoosen Lake North Dam Tolland County | 16 | 1830 | Significant | Poor |
| Tanner'S Pond Dam Litchfield County | 8 | 1917 | Significant | Not Rated |
| Tantaquidgeon New London County | 30 | — | Low | Satisfactory |
| 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 |
| Thomaston Dam Litchfield County | 137 | 1960 | High | Not Available |
| Thrushwood Lake Dam Fairfield County | 12 | — | Significant | Fair |
| Thurston Pond Dam New Haven County | 20 | 1890 | High | Satisfactory |
| 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 |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.