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 426–450 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Upper Kohanza Lake Dam Fairfield County | 30 | 1866 | High | Satisfactory |
| Upper Millpond Dam New London County | 11 | 1820 | Significant | Satisfactory |
| Upper Murray Pond Dam Middlesex County | 7 | — | Significant | Satisfactory |
| Upper Pond Dam Hartford County | 8 | — | Significant | Satisfactory |
| Upper Pond Dam New London County | 12 | 1860 | Significant | Satisfactory |
| Upper Shepaug Dam Litchfield County | 90 | 1965 | High | Satisfactory |
| Valley Pond Dam Litchfield County | 21 | 1900 | Significant | Satisfactory |
| Ville Pond Dam Fairfield County | 25 | — | Significant | Satisfactory |
| Wangum Lake Dam Litchfield County | 10 | 1890 | Significant | Satisfactory |
| Warner Pond Dam Fairfield County | 10 | — | Significant | Satisfactory |
| Wasel Reservoir Dam Hartford County | 100 | 1966 | High | Satisfactory |
| Waterbury Reservoir No. 2 Dam New Haven County | 22 | 1880 | High | Satisfactory |
| Waterhouse Pond Dam Middlesex County | 4 | 1902 | Significant | Satisfactory |
| Waubeeka Lake Dam Fairfield County | 10 | 1933 | Significant | Satisfactory |
| Weiss Pond Dam Litchfield County | 5 | — | Significant | Satisfactory |
| Wepawaug Reservoir Dam New Haven County | 18 | 1911 | Significant | Satisfactory |
| Werner Woods Pond Dam Hartford County | 24 | 1963 | Significant | Satisfactory |
| West Brook Diversion Dam New Haven County | 13 | — | Significant | Satisfactory |
| Westfield Falls Pond Dam Middlesex County | 11 | — | Significant | Satisfactory |
| West Hill Pond Dam Litchfield County | 12 | 1900 | Significant | Satisfactory |
| West Lake Reservoir Dam Fairfield County | 42 | 1906 | High | Satisfactory |
| West Side Flood Control Dam #5 Litchfield County | 20 | 1970 | High | Satisfactory |
| Whigville Reservoir Dam Hartford County | 58 | 1909 | High | Satisfactory |
| Whippoorwill Pond Dam New London County | 16 | — | Significant | Satisfactory |
| Whist Pond Dam Litchfield County | 8 | 1900 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.