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 151–175 of 254
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| House Rest Pond Dam Hartford County | 6 | — | Significant | Fair |
| Hockanum Reservoir Dam Tolland County | 37 | 1890 | High | Fair |
| Highstead Pond Dam Fairfield County | 13 | 1985 | Significant | Fair |
| Highland Lake Dam Litchfield County | 27 | 1860 | High | Fair |
| Higganum Reservoir Dam Middlesex County | 48 | 1868 | High | Fair |
| Hemlock Reservoir Dam Fairfield County | 75 | 1914 | High | Fair |
| Hell Hollow Pond Dam New London County | 10 | — | Low | Fair |
| Hatchery Pond Dam New Haven County | 19 | — | Significant | Fair |
| Hartford Reservoir #6 East Dam Hartford County | 42 | 1895 | High | Fair |
| Hartford Reservoir #5 Dam Hartford County | 24 | 1884 | High | Fair |
| Hartford Reservoir #3 Dam Hartford County | 41 | 1875 | High | Fair |
| Hart Brook Pond Dam Litchfield County | 23 | 1908 | Significant | Fair |
| Hanover Reservoir Dam New London County | 27 | 1900 | High | Fair |
| Hanks Hill Pond Dam Tolland County | 9 | — | Significant | Fair |
| Hallville Pond Dam New London County | 13 | 1920 | Significant | Fair |
| Halls Pond Dam Tolland County | 22 | 1920 | Significant | Fair |
| Hall Pond Dam Fairfield County | 5 | — | Significant | Fair |
| Halchek Pond Dam Tolland County | 26 | 1972 | Significant | Fair |
| Gusceon Cemetery Dam Litchfield County | 8 | — | Significant | Fair |
| Gunsight Pond Dam Middlesex County | 17 | — | Significant | Fair |
| Green Acre Lane Pond Dam Fairfield County | 4 | — | Significant | Fair |
| Great Pond Dam Fairfield County | 20 | — | High | Fair |
| Great Meadow Brook Pond Dam New London County | 10 | — | Significant | Fair |
| Great Brook Dam #1 Middlesex County | 14 | — | Significant | Fair |
| Gorton Pond Dam New London County | 8 | 1860 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.