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 551–575 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Indian Heaven Pond Dam Litchfield County | 6 | — | Significant | Not Rated |
| Iffland Pond Dam Litchfield County | 15 | — | Significant | Poor |
| I-91 Detention Basin Dam Hartford County | 15 | — | Significant | Satisfactory |
| Hydeville Pond Dam Tolland County | 14 | 1900 | Significant | Not Rated |
| Hurley Road Pond Dam New Haven County | 10 | — | Significant | Satisfactory |
| Hurlbut Pond Litchfield County | 5 | — | Significant | Not Rated |
| Hurds Lake Dam Tolland County | 15 | 1934 | Significant | Poor |
| Hurd Park Pond Dam Middlesex County | 8 | — | Significant | Not Rated |
| Huntington Pond Dam Fairfield County | 11 | 1880 | Significant | Satisfactory |
| Hummer Pond New Haven County | 6 | — | Significant | Not Rated |
| Howells Pond Dam Hartford County | 10 | 1880 | Significant | Satisfactory |
| House Rest Pond Dam Hartford County | 6 | — | Significant | Fair |
| Horse Brook Dam Windham County | 5 | — | Significant | Not Rated |
| Hoppers-Birge Pond Dam Hartford County | 16 | 1933 | Significant | Poor |
| Hopeville Pond Dam New London County | 18 | 1910 | Significant | Satisfactory |
| Hoover Pond Dam Litchfield County | 10 | 1920 | Significant | Satisfactory |
| 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 |
| Hoadley Pond Dam New Haven County | 19 | 1873 | Significant | Satisfactory |
| Hilltop Pond Dam Litchfield County | 11 | 1925 | Significant | Not Rated |
| Highstead Pond Dam Fairfield County | 13 | 1985 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.