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 126–150 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Riverdance Mill Dam Litchfield County | 14 | — | Significant | Satisfactory |
| Riga Lake Dam Litchfield County | 10 | 1900 | Significant | Satisfactory |
| Ridgewood Country Club Pond Fairfield County | 8 | — | Significant | Satisfactory |
| Ridgeview Pond Dam Fairfield County | 10 | — | Significant | Satisfactory |
| Ridge Lower Detention Dam New Haven County | 9 | — | Significant | Satisfactory |
| Rhode Island Pond Dam Tolland County | 20 | 1880 | Significant | Satisfactory |
| Reuben Hart Reservoir Dam Litchfield County | 80 | 1933 | High | Satisfactory |
| Red Mill Pond Dam New London County | 18 | — | Significant | Satisfactory |
| Reams Pond Dam Windham County | 11 | 1900 | Significant | Satisfactory |
| Ravenswood Dam New Haven County | 20 | — | Significant | Satisfactory |
| Rainbow Reservoir Dam Hartford County | 43 | 1925 | High | Satisfactory |
| Quinebaug Windham County | 14 | 1855 | Low | Satisfactory |
| Quaddick Reservoir Dam Windham County | 19 | 1900 | High | Satisfactory |
| Putnam Reservoir Dam Fairfield County | 35 | 1910 | High | Satisfactory |
| Putnam Park Pond Dam Fairfield County | 8 | 1900 | Significant | Satisfactory |
| Pratt Read Dam Middlesex County | 11 | 1860 | Significant | Satisfactory |
| Portland Reservoir Dam Middlesex County | 28 | 1964 | High | Satisfactory |
| Porter Reservoir Dam Hartford County | 32 | 1902 | Significant | Satisfactory |
| Porter Pond Dam Windham County | 9 | — | Significant | Satisfactory |
| Poquonnock Reservoir Dam New London County | 18 | 1901 | High | Satisfactory |
| Popes Pond Dam Fairfield County | 24 | 1965 | High | Satisfactory |
| Poole Pond Dam Windham County | 16 | 1974 | Significant | Satisfactory |
| Poheganut Reservoir Dam New London County | 16 | 1952 | Significant | Satisfactory |
| Plymouth Reservoir Dam Litchfield County | 20 | 1881 | High | Satisfactory |
| Plainville Reservoir Dam Hartford County | 17 | 1884 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.