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 76–100 of 122
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hatch Pond Dam Litchfield County | 31 | 1900 | Significant | Poor |
| Hart Pond Dam Litchfield County | 9 | — | Significant | Poor |
| Hartford Reservoir #1 Dam Hartford County | 46 | 1868 | High | Poor |
| Grupes Reservoir Dam Fairfield County | 24 | 1871 | High | Poor |
| Gritman Pond Dam Litchfield County | 12 | 1920 | Significant | Poor |
| Griswold Pond #2 Dam Middlesex County | 10 | — | Significant | Poor |
| Great Hill Reservior Dam New Haven County | 41 | 1909 | High | Poor |
| Great Hill Pond Dam Middlesex County | 14 | 1870 | Significant | Poor |
| Gravel Pit Pond Dam New Haven County | 14 | — | Significant | Poor |
| Goodwin Pond Dam Litchfield County | 21 | — | Significant | Poor |
| Gillette Castle Dam Middlesex County | 4 | — | Significant | Poor |
| Gay Cemetery Pond Dam New London County | 19 | 1920 | Significant | Poor |
| Gager'S Pond Dam New London County | 22 | 1876 | Significant | Poor |
| Furnace Pond Dam Windham County | 7 | 1870 | Significant | Poor |
| Fitchville Pond Dam New London County | 20 | 1871 | High | Poor |
| Factory Pond Dam Fairfield County | 24 | 1874 | High | Poor |
| Ely Pond Dam Hartford County | 3 | — | Significant | Poor |
| East Pond Dam Fairfield County | 18 | — | Significant | Poor |
| Crystal Pond Park Dam Windham County | 13 | 1976 | Significant | Poor |
| Crystal Pond Dam Windham County | 8 | 1940 | Significant | Poor |
| Crystal Lake Dam Middlesex County | 50 | 1850 | High | Poor |
| Congdon Pond Dam New London County | 35 | 1900 | Significant | Poor |
| Collins Pond Dam Fairfield County | 10 | — | Significant | Poor |
| Coderre Pond Dam Windham County | 8 | — | Significant | Poor |
| City Pond Dam New London County | 31 | — | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.