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 626–650 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lemanquais Pond Dam Litchfield County | 10 | 1968 | Significant | Fair |
| Leesville Dam Middlesex County | 25 | 1900 | High | Satisfactory |
| Lee'S Pond Dam Fairfield County | 18 | 1903 | Significant | Poor |
| Lees Pond #1 Dam Fairfield County | 12 | — | Significant | Not Rated |
| Ledyard Reservoir Dam New London County | 30 | 1954 | Significant | Satisfactory |
| Laurel Reservoir Dam Fairfield County | 50 | 1923 | High | Satisfactory |
| Laurel Lake Dam Litchfield County | 29 | 1965 | Significant | Satisfactory |
| Laurel Brook Reservoir Dam Middlesex County | 20 | 1866 | High | Satisfactory |
| Larsen'S Pond Dam New Haven County | 6 | — | Significant | Satisfactory |
| Larners Pond Dam Tolland County | 8 | — | Significant | Not Rated |
| Larkin Pond Dam New Haven County | 7 | — | Significant | Satisfactory |
| Lantern Hill Pond Dam New London County | 9 | — | Significant | Satisfactory |
| Lane Pond Dam New Haven County | 16 | 1918 | Significant | Satisfactory |
| Lake Wintergreen Dam New Haven County | 31 | 1863 | High | Satisfactory |
| Lake Winnemaug Dam Litchfield County | 24 | 1920 | High | Satisfactory |
| Lake Windwing Dam Fairfield County | 14 | 1900 | Significant | Fair |
| Lake Whitney Dam New Haven County | 44 | 1861 | High | Poor |
| Lake Wequapauset Dam New Haven County | 5 | — | Significant | Fair |
| Lake Watrous Dam New Haven County | 116 | 1915 | High | Satisfactory |
| Lake Waramaug Dam Litchfield County | 3 | — | Significant | Fair |
| Lake Wackawana Dam and Dike Fairfield County | 7 | — | Significant | Not Rated |
| Lakeville Reservoir #2 Dam Litchfield County | 22 | — | Significant | Fair |
| Lake Triangle Camp Jewell Dam Litchfield County | 10 | 1952 | Significant | Satisfactory |
| Lake Terramuggas Dam Hartford County | 5 | — | Significant | Not Rated |
| Lake Tavolan Dam Litchfield County | 13 | 1970 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.