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 76–100 of 236
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hartford Reservoir #2 Dam Hartford County | 32 | 1869 | High | Satisfactory |
| Hartford Reservoir #3 Dam Hartford County | 41 | 1875 | High | Fair |
| Hartford Reservoir #5 Dam Hartford County | 24 | 1884 | High | Fair |
| Hartford Reservoir #6 East Dam Hartford County | 42 | 1895 | High | Fair |
| Hemlock Reservoir Dam Fairfield County | 75 | 1914 | High | Fair |
| Higganum Reservoir Dam Middlesex County | 48 | 1868 | High | Fair |
| Highland Lake Dam Litchfield County | 27 | 1860 | High | Fair |
| Hitchcock Lake College Place Dike New Haven County | 5 | 1868 | High | Satisfactory |
| Hockanum Reservoir Dam Tolland County | 37 | 1890 | High | Fair |
| Hop Brook Dam New Haven County | 89 | 1968 | High | Not Available |
| Howard Reservoir Dam Hartford County | 44 | 1902 | High | Satisfactory |
| Island Brook Lagoon Dam Fairfield County | 19 | — | High | Fair |
| Jennings Pond Dam Middlesex County | 22 | 1870 | High | Satisfactory |
| John D. Milne Lake Dam Fairfield County | 105 | 1947 | High | Fair |
| Kenmere Reservoir Dam Hartford County | 38 | 1898 | High | Satisfactory |
| Kensington Dam Hartford County | 25 | 1901 | High | Satisfactory |
| Killingworth Reservoir Dam Middlesex County | 46 | 1895 | High | Satisfactory |
| Lake Bethany Dam New Haven County | 66 | 1892 | High | Satisfactory |
| Lake Chamberlain Dam New Haven County | 93 | 1890 | High | Satisfactory |
| Lake Dawson Dam New Haven County | 60 | 1890 | High | Satisfactory |
| Lake Forest Dam Fairfield County | 28 | 1899 | High | Satisfactory |
| Lake Gaillard East Dike New Haven County | 53 | 1929 | High | Satisfactory |
| Lake Glen Dam New Haven County | 72 | 1907 | High | Satisfactory |
| Lake Harwinton Dam Litchfield County | 30 | 1930 | High | Satisfactory |
| Lake Housatonic New Haven County | 25 | 1870 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.