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 276–300 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Kroupa Pond Dam Middlesex County | 10 | 1900 | Significant | Satisfactory |
| Kovac'S Pond Dam Fairfield County | 7 | — | Significant | Satisfactory |
| Killingworth Reservoir Dam Middlesex County | 46 | 1895 | High | Satisfactory |
| Kettletown Detention Dam New Haven County | 15 | — | Significant | Satisfactory |
| Kensington Dam Hartford County | 25 | 1901 | High | Satisfactory |
| Kenmere Reservoir Dam Hartford County | 38 | 1898 | High | Satisfactory |
| Kelseytown Reservoir Dam Middlesex County | 12 | 1895 | Significant | Satisfactory |
| Johnstone Pond Dam Windham County | 12 | — | Significant | Satisfactory |
| Johnson Millpond Dam Middlesex County | 25 | 1880 | Significant | Satisfactory |
| Jepps Pond Dam New Haven County | 18 | — | Significant | Satisfactory |
| Jennings Pond Dam Middlesex County | 22 | 1870 | High | Satisfactory |
| Jelliff Mill Pond Dam Fairfield County | 14 | — | Significant | Satisfactory |
| Jacklin Lake Willis Street Dike Hartford County | 12 | — | Significant | Satisfactory |
| Ivoryton Pond Dam Middlesex County | 8 | — | Significant | Satisfactory |
| Ironworks Road Pond Dam Fairfield County | 6 | 1930 | Significant | Satisfactory |
| Industrial Monument Dam Litchfield County | 14 | — | Significant | Satisfactory |
| I-91 Detention Basin Dam Hartford County | 15 | — | Significant | Satisfactory |
| Hurley Road Pond Dam New Haven County | 10 | — | Significant | Satisfactory |
| Huntington Pond Dam Fairfield County | 11 | 1880 | Significant | Satisfactory |
| Howells Pond Dam Hartford County | 10 | 1880 | Significant | Satisfactory |
| Howard Reservoir Dam Hartford County | 44 | 1902 | High | Satisfactory |
| Hopeville Pond Dam New London County | 18 | 1910 | Significant | Satisfactory |
| Hoover Pond Dam Litchfield County | 10 | 1920 | Significant | Satisfactory |
| Holbrook Pond Dam Tolland County | 9 | 1920 | Significant | Satisfactory |
| Hoadley Pond Dam New Haven County | 19 | 1873 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.