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 776–800 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hazelmere Dam Litchfield County | 11 | — | Significant | Not Rated |
| Hayes Road Pond Berg Pond) Hartford County | 15 | — | Significant | Not Rated |
| Haviland Millpond Dam Fairfield County | 12 | 1920 | Low | Not Rated |
| Hattertown Pond Dam Fairfield County | 11 | 1840 | Significant | Satisfactory |
| Hatch Pond Dam Litchfield County | 3 | — | Significant | Satisfactory |
| Hatch Pond Dam Litchfield County | 31 | 1900 | Significant | Poor |
| Hatchery Pond Dam New Haven County | 19 | — | Significant | Fair |
| Hasen Pond Dam Fairfield County | 12 | — | Significant | Not Rated |
| Hart Pond Dam Litchfield County | 5 | — | Significant | Unsatisfactory |
| Hart Pond Dam Litchfield County | 9 | — | Significant | Poor |
| 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 |
| Hartford Reservoir #2 Dam Hartford County | 32 | 1869 | High | Satisfactory |
| Hartford Reservoir #1 Dam Hartford County | 46 | 1868 | High | Poor |
| Hart Brook Pond Dam Litchfield County | 23 | 1908 | Significant | Fair |
| Happy Acres Dam Windham County | 20 | 1973 | Significant | Satisfactory |
| Hansens Pond Dam Tolland County | 8 | 1935 | Significant | Satisfactory |
| Hanover Reservoir Dam New London County | 27 | 1900 | High | Fair |
| Hanover Pond New Haven County | 25 | 2006 | High | Satisfactory |
| Hanks Hill Pond Dam Tolland County | 9 | — | Significant | Fair |
| Hancock Brook Dam Litchfield County | 35 | 1966 | High | Not Available |
| Hams Pond Dam Fairfield County | 10 | — | Significant | Satisfactory |
| Hampton Reservoir Dam Windham County | 8 | 1944 | Significant | Satisfactory |
| Hammonasset Dam New Haven County | 63 | 1956 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.