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 726–750 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Moss Farm Dam New Haven County | 11 | 1920 | Significant | Fair |
| Moulsons Pond Dam New London County | 14 | 1840 | Significant | Not Rated |
| Mountain Lake Dam Litchfield County | 8 | 1956 | Significant | Poor |
| Mountain Pond Dam Fairfield County | 15 | 1901 | Significant | Satisfactory |
| Mount Higby Reservoir Dam Middlesex County | 30 | 1897 | High | Satisfactory |
| Mount Sanford Road Pond Dam New Haven County | 7 | — | Significant | Not Rated |
| Mulberry Reservoir Dam New Haven County | 66 | 1897 | High | Satisfactory |
| Murphy Lake Dam New Haven County | 3 | — | Significant | Not Rated |
| Murphy Pond Dam Fairfield County | 13 | 1920 | Significant | Poor |
| Myer Huber Pond Dam New Haven County | 4 | — | Significant | Not Rated |
| Myers Pond Dam Fairfield County | 9 | — | Significant | Satisfactory |
| Mystic Reservoir Dam New London County | 34 | 1880 | High | Satisfactory |
| Name Plate Pond Dam Tolland County | 11 | — | Significant | Satisfactory |
| Nash Pond Dam Litchfield County | 11 | 1975 | Significant | Satisfactory |
| Nash Pond Dam Fairfield County | 22 | 1879 | High | Satisfactory |
| Nazelrod Pond Dam New Haven County | 4 | — | Significant | Not Rated |
| Nelson Gustine Dam Middlesex County | 15 | 1968 | Significant | Satisfactory |
| Nepaug Dam Litchfield County | 156 | 1918 | High | Fair |
| New Britain Reservoir Dam New Haven County | 42 | 1904 | High | Satisfactory |
| New Canaan Reservoir Dam Fairfield County | 44 | 1898 | High | Satisfactory |
| New City Pond Dam Tolland County | 15 | 1900 | Significant | Poor |
| New Hartford Reservoir Dam Litchfield County | 17 | — | Significant | Not Rated |
| Newmanco Dam Fairfield County | 10 | — | Significant | Not Rated |
| New Milford Reservoir #3 Dam Litchfield County | 21 | 1900 | Significant | Not Rated |
| New Milford Reservoir #4 Dam Litchfield County | 40 | 1900 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.