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 26–50 of 122
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Swede Pond Dam Hartford County | 18 | — | Significant | Poor |
| Stoddard Reservoir Dam Hartford County | 8 | — | Significant | Poor |
| State Park Pond Dam Middlesex County | 11 | — | Significant | Poor |
| Stafford Reservoir #4 Dam Tolland County | 8 | 1928 | Significant | Poor |
| Stafford Reservoir #3 Dam Tolland County | 11 | 1930 | Significant | Poor |
| Spencer Pond Dam New London County | 12 | 1900 | Significant | Poor |
| Smith Pond Dam Litchfield County | 10 | 1927 | Significant | Poor |
| Silvia'S Lower Pond Dam New London County | 14 | — | High | Poor |
| Shady Lake Dam Tolland County | 12 | — | Significant | Poor |
| Seymour Reservoir #4 Dam New Haven County | 28 | 1951 | Significant | Poor |
| Seeley Pond Dam Fairfield County | 10 | — | Significant | Poor |
| Rowayton Pond Dam Fairfield County | 8 | — | Significant | Poor |
| Rogers Pond Dam Fairfield County | 10 | — | Significant | Poor |
| Riverside Pond Dam Tolland County | 21 | 1880 | High | Poor |
| Quonnipaug Lake Dam New Haven County | 5 | 1850 | Significant | Poor |
| Putnam Memorial Park Pond Dam Fairfield County | 8 | — | Significant | Poor |
| Punch Brook Pond Dam Hartford County | 10 | — | Significant | Poor |
| Powers Lake Dam New London County | 25 | 1870 | Significant | Poor |
| Pomperaug River Dam New Haven County | 8 | — | Significant | Poor |
| Plymouth Avenue Pond Dam Fairfield County | 7 | — | Significant | Poor |
| Pickerel Lake Dam Middlesex County | 17 | 1870 | Significant | Poor |
| Pewter Pond Dam Litchfield County | 9 | — | Significant | Poor |
| Peck Pond Dam Windham County | 16 | 1930 | Significant | Poor |
| Peat Swamp Reservoir Dam New Haven County | 41 | 1925 | High | Poor |
| Paper Mill Pond Dam New London County | 28 | 1870 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.