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 201–225 of 254
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Shelton Reservoir #2 Dam Fairfield County | 16 | 1900 | High | Fair |
| Shelton Reservoir #3 Dam Fairfield County | 20 | 1915 | Significant | Fair |
| Silver Lake Dam New Haven County | 7 | — | Significant | Fair |
| Silver Lake Dam Hartford County | 15 | 1920 | High | Fair |
| Silvermine Dam Fairfield County | 18 | — | Significant | Fair |
| Silvia'S Upper Pond Dam New London County | 12 | 1870 | High | Fair |
| Siscowit Reservoir Dam Fairfield County | 6 | 1865 | Significant | Fair |
| Spaulding Pond Dam New London County | 7 | 1900 | Significant | Fair |
| Sperry Pond Dam Tolland County | 15 | — | Significant | Fair |
| Spring Lake Dam Fairfield County | 7 | 1900 | Significant | Fair |
| Stanley Hart Pond Dam Hartford County | 4 | — | Significant | Fair |
| Starr Mill Pond Dam Middlesex County | 10 | 1875 | Significant | Fair |
| Stepney Dam Fairfield County | 10 | 1927 | Significant | Fair |
| Stoddard Dam New Haven County | 13 | — | Significant | Fair |
| Stony Brook Reservoir Dam New London County | 40 | 1912 | Significant | Fair |
| Straitsville Reservoir Dam New Haven County | 25 | 1900 | Significant | Fair |
| Stub Pond Dam Hartford County | 7 | 1918 | Significant | Fair |
| Swan Lake Dam New Haven County | 28 | 1920 | High | Fair |
| Taftville Reservoir #1 Dam New London County | 30 | 1880 | Significant | Fair |
| Terryville Reservoir #3 Dam Litchfield County | 20 | 1920 | Significant | Fair |
| Tetram Pond Dam Middlesex County | 15 | 1923 | Significant | Fair |
| Thrushwood Lake Dam Fairfield County | 12 | — | Significant | Fair |
| Timber Lake Dam Fairfield County | 14 | 1957 | Significant | Fair |
| Trading Cove Pond Dam New London County | 32 | 1900 | Significant | Fair |
| Transylvania Pond Dam Litchfield County | 8 | 1893 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.