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 301–325 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Norfolk Brook Flood Control Dam #6 Litchfield County | 43 | 1966 | High | Satisfactory |
| North Alvia Chase Reservoir Dam Windham County | 6 | — | Significant | Satisfactory |
| Northfield Pond Dam Litchfield County | 13 | 1855 | Significant | Satisfactory |
| North Pond Reservoir Dam Litchfield County | 20 | 1840 | High | Satisfactory |
| Norwich State Hospital Pond Dam New London County | 19 | — | Significant | Satisfactory |
| Nystrom Pond Dam Litchfield County | 16 | 1889 | Significant | Satisfactory |
| Obed Heights Reservoir Dam Middlesex County | 15 | 1880 | High | Satisfactory |
| Occum New London County | 14 | 1900 | Low | Satisfactory |
| Old Daniels Dam Windham County | 18 | 1880 | Significant | Satisfactory |
| Old Marsh Pond Dam Litchfield County | 30 | 1913 | High | Satisfactory |
| Old Mill Pond Dam Middlesex County | 6 | — | Significant | Satisfactory |
| Oxoboxo Lake Dam New London County | 26 | 1810 | High | Satisfactory |
| Packers Pond Dam Windham County | 20 | 1880 | High | Satisfactory |
| Padanaram Reservoir Dam Fairfield County | 29 | 1883 | High | Satisfactory |
| Pages Millpond Dam New Haven County | 11 | 1880 | Significant | Satisfactory |
| Paparrazzo Dam Hartford County | 11 | — | Significant | Satisfactory |
| Paper Mill Pond Dam Tolland County | — | 1900 | High | Satisfactory |
| Park Pond Dam Litchfield County | 20 | — | High | Satisfactory |
| Parks Pond Dam #2 Fairfield County | 11 | — | Significant | Satisfactory |
| Pattaconk Dam #3 Middlesex County | 13 | — | Significant | Satisfactory |
| Pine Acres Lake Dam Windham County | 9 | 1880 | Significant | Satisfactory |
| Pinewood Lake Dam Fairfield County | 28 | 1890 | High | Satisfactory |
| Pistapaug Reservoir Dam New Haven County | 9 | 1941 | High | Satisfactory |
| Pitch Reservoir Dam Litchfield County | 85 | 1944 | 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.