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 601–625 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lower Hillhouse Road Pond Dam New Haven County | 6 | — | Significant | Not Rated |
| Lower Hart Ponds Dam Hartford County | 18 | 1920 | High | Satisfactory |
| Lower Detention Basin Dam New Haven County | 4 | — | Significant | Satisfactory |
| Lower Bolton Lake Dam Tolland County | 20 | 1940 | Significant | Satisfactory |
| Lower Blissville Pond Dam New London County | 14 | 1860 | Significant | Satisfactory |
| Lower Ansonia Reservoir Dam New Haven County | 18 | 1887 | High | Satisfactory |
| Lovely Pond Dam Hartford County | 5 | — | Significant | Not Rated |
| Lost Pond Dam Litchfield County | 13 | — | Significant | Satisfactory |
| Long Pond Dam New London County | 6 | 1880 | Significant | Fair |
| Long Meadows Pond Dam Litchfield County | 8 | 1880 | Significant | Satisfactory |
| Long Meadow Pond Dam New Haven County | 12 | — | Significant | Satisfactory |
| Long Hill Reservoir Dam New Haven County | 80 | 1914 | High | Satisfactory |
| Lockwood Pond Dam Fairfield County | 10 | — | Significant | Fair |
| Lochwood Lake Dam Middlesex County | 13 | 1973 | Significant | Satisfactory |
| Little Tracys Pond Dam New Haven County | 14 | — | Significant | Fair |
| Little River Pond Dam Windham County | 12 | — | Significant | Not Rated |
| Little City Pond Middlesex County | 10 | — | Significant | Not Rated |
| Lithuanian Scout Association Pond Dam New London County | 18 | — | Significant | Satisfactory |
| Litchfield Reservoir Dam Litchfield County | 20 | — | Significant | Satisfactory |
| Lisbon Pond Dam Windham County | 11 | 1959 | Significant | Not Rated |
| Lincoln Pond Litchfield County | 6 | — | Significant | Not Rated |
| Lincoln Lake New London County | 6 | 1900 | Significant | Not Rated |
| Lily Pond Plains Road Dam New Haven County | 5 | — | Significant | Not Rated |
| Liepold Pond Dam New London County | 5 | — | Significant | Not Rated |
| Leroy Pond Dam Fairfield County | 7 | — | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.