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 451–474 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Baltic Reservoir Dam (West) New London County | 30 | 1900 | Significant | Satisfactory |
| Baldwins Pond Dam New Haven County | 24 | 1850 | Significant | Satisfactory |
| Babcock Pond Dam #1 New London County | 8 | 1880 | Significant | Satisfactory |
| Babcock Pond Dam Fairfield County | 15 | — | Significant | Satisfactory |
| Avery Flood Control Site #2 Dam Hartford County | 25 | 1993 | High | Satisfactory |
| Avery Flood Control Site #1 Dam Hartford County | 20 | 1992 | High | Satisfactory |
| Asylum Reservoir #5 Dam Middlesex County | 15 | 1879 | Significant | Satisfactory |
| Asylum Reservoir #4 Dam Middlesex County | 30 | — | Significant | Satisfactory |
| Aspetuck River Dam Fairfield County | 12 | — | Significant | Satisfactory |
| Aspetuck Reservoir Dam Fairfield County | 11 | 1913 | Significant | Satisfactory |
| Ashland Pond Dam New London County | 25 | 1800 | High | Satisfactory |
| Ashford Lake Dam Windham County | 23 | 1949 | Significant | Satisfactory |
| Arrigoni Pond Dam Middlesex County | 21 | 1945 | Significant | Satisfactory |
| Armstrong Park Pond Dam Fairfield County | 16 | — | Significant | Satisfactory |
| Aqua Pond Dam Windham County | 11 | — | Significant | Satisfactory |
| Andover Lake Dam Tolland County | 18 | 1926 | Significant | Satisfactory |
| Amston Lake Dam Tolland County | 10 | 1910 | Significant | Satisfactory |
| American Felt Dam Fairfield County | 37 | 1867 | High | Satisfactory |
| American Can Company Dam Fairfield County | 53 | 1970 | High | Satisfactory |
| Allen Pond Dam Litchfield County | 15 | — | Significant | Satisfactory |
| Aldon Mill Pond Dam Tolland County | 25 | 1920 | Significant | Satisfactory |
| Acme Pond Dam Windham County | 16 | 1846 | High | Satisfactory |
| Above Pond Dam Fairfield County | 14 | — | Significant | Satisfactory |
| Abbott'S Pond Dam Windham County | 28 | 1960 | Significant | Satisfactory |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.