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 826–850 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Pinewood Lake Dam Fairfield County | 28 | 1890 | High | Satisfactory |
| Pinneys Pond Dam Tolland County | 10 | 1880 | Low | Not Rated |
| Pin Shop Pond Dam Litchfield County | 23 | 1870 | High | Fair |
| Pistapaug Reservoir Dam New Haven County | 9 | 1941 | High | Satisfactory |
| Pitcher Mountain Pond Dam New London County | 4 | — | Significant | Not Rated |
| Pitch Reservoir Dam Litchfield County | 85 | 1944 | High | Satisfactory |
| Pizzini Pond Dam Middlesex County | 5 | — | Significant | Not Rated |
| Plainville Reservoir Dam Hartford County | 17 | 1884 | High | Satisfactory |
| Plume and Atwood Dam Litchfield County | 5 | — | Significant | Not Rated |
| Plymouth Avenue Pond Dam Fairfield County | 7 | — | Significant | Poor |
| Plymouth Reservoir Dam Litchfield County | 20 | 1881 | High | Satisfactory |
| Podunk Pond Dam Hartford County | 15 | 1730 | Significant | Not Rated |
| Poheganut Reservoir Dam New London County | 16 | 1952 | Significant | Satisfactory |
| Pomeroy Flood Control Site #3 Dam Tolland County | 36 | 1960 | High | Fair |
| Pomperaug River Dam New Haven County | 8 | — | Significant | Poor |
| Poole Pond Dam Windham County | 16 | 1974 | Significant | Satisfactory |
| Popes Pond Dam Fairfield County | 24 | 1965 | High | Satisfactory |
| Poquonnock Reservoir Dam New London County | 18 | 1901 | High | Satisfactory |
| Poquonock Lake Dam New London County | 10 | — | Low | Not Rated |
| Porter Pond Dam Windham County | 9 | — | Significant | Satisfactory |
| Porter Reservoir Dam Hartford County | 32 | 1902 | Significant | Satisfactory |
| Portland Reservoir Dam Middlesex County | 28 | 1964 | High | Satisfactory |
| Post Pond Dam Middlesex County | 8 | — | Significant | Fair |
| Potash Pond Dam Windham County | 21 | 1880 | Significant | Fair |
| Pound Pond Dam Fairfield County | 18 | — | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.