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 226–250 of 254
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Trap Falls Reservoir Dam Fairfield County | 48 | 1905 | High | Fair |
| Tuller Reservoir Dam Hartford County | 46 | 1900 | Significant | Fair |
| Turnpike Pond Dam Middlesex County | 9 | 1900 | Significant | Fair |
| Twitchell Reservoir Dam New Haven County | 7 | — | Significant | Fair |
| Union Pond Dam Hartford County | 33 | 1901 | High | Fair |
| Upper Ansonia Reservoir East Dike New Haven County | 12 | — | High | Fair |
| Upper Guilford Lakes Dam New Haven County | 12 | 1929 | Significant | Fair |
| Upper Mill Pond Dam Middlesex County | 12 | 1860 | Significant | Fair |
| Upper Pond Dam Litchfield County | 20 | 1880 | Significant | Fair |
| Upper Unionville Reservoir Dam Hartford County | 23 | 1909 | Significant | Fair |
| Urban Pond Dam Middlesex County | — | — | Significant | Fair |
| Useful Pond Dam Middlesex County | 15 | — | Significant | Fair |
| Versailles Pond Dam New London County | 14 | 1920 | Significant | Fair |
| Walnut Hill Pond Dam Fairfield County | 27 | 1962 | Significant | Fair |
| Wataba Lake Dam Fairfield County | 10 | 1900 | Significant | Fair |
| Watersedge Pond Dam New London County | 13 | 1966 | Significant | Fair |
| Watts A.K.A. Hamilton Pond Dam Hartford County | 11 | — | Significant | Fair |
| Westport Pond Dam Fairfield County | 8 | — | Significant | Fair |
| West River Flood Control Dam and Levee New Haven County | 6 | 1987 | Significant | Fair |
| West River Pond Dam New Haven County | 24 | — | Significant | Fair |
| Wheeler Pond Dam New London County | 20 | 1810 | Significant | Fair |
| Wilcox Pond Dam Fairfield County | 20 | — | Significant | Fair |
| Wildlife Marsh #2 Dam Windham County | 9 | 1974 | Significant | Fair |
| Wilshire Pond Dam Fairfield County | 8 | 1920 | Significant | Fair |
| Wilsonville Pond Dam Windham County | 12 | 1880 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.