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 751–775 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Holy Ghost Fathers Pond Fairfield County | 10 | — | Significant | Not Rated |
| Holts Ice Pond Dam Fairfield County | 7 | — | Significant | Not Rated |
| Holman Pond Dam Tolland County | 9 | — | Significant | Not Rated |
| Holly Pond Dam Litchfield County | 4 | — | Significant | Not Rated |
| Holbrook Pond Dam Tolland County | 9 | 1920 | Significant | Satisfactory |
| Hog Pond Dam New Haven County | 7 | — | Significant | Not Rated |
| Hockanum Reservoir Dam Tolland County | 37 | 1890 | High | Fair |
| Hoadley Pond Dam New Haven County | 19 | 1873 | Significant | Satisfactory |
| Hitchcock Lake College Place Dike New Haven County | 5 | 1868 | High | Satisfactory |
| Hilltop Pond Dam Litchfield County | 11 | 1925 | Significant | Not Rated |
| Highstead Pond Dam Fairfield County | 13 | 1985 | Significant | Fair |
| Highland Pond Dam Middlesex County | 18 | 1875 | Significant | Satisfactory |
| Highland Lake Dam Litchfield County | 27 | 1860 | High | Fair |
| High Hill Pond Dam New Haven County | 17 | 1968 | Significant | Satisfactory |
| Higganum Reservoir Dam Middlesex County | 48 | 1868 | High | Fair |
| Hidden Pond Park Dam New Haven County | 8 | — | Significant | Satisfactory |
| Hidden Lake Dam Middlesex County | 13 | 1860 | Significant | Satisfactory |
| Hickok Pond Dam Fairfield County | 6 | — | Significant | Satisfactory |
| Hersh Pond Dam Litchfield County | 14 | 1988 | Significant | Not Rated |
| Henry'S Pond #2 Dam Hartford County | 12 | — | Significant | Not Rated |
| Hemlock Reservoir Dam Fairfield County | 75 | 1914 | High | Fair |
| Hell Hollow Pond Dam New London County | 10 | — | Low | Fair |
| Heinrich Pond Dam Middlesex County | 12 | — | Significant | Satisfactory |
| Hedlund Pond Middlesex County | 6 | — | Significant | Not Rated |
| Hazel Pond Dam Hartford County | 10 | — | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.