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 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Butternut Hollow Pond Dam Middlesex County | 21 | 1935 | Significant | Satisfactory |
| Cady Pond Dam Windham County | 13 | 1865 | Significant | Satisfactory |
| Candee Reservoir Dam New Haven County | 24 | — | Significant | Satisfactory |
| Canoe Brook Lake West Dike Fairfield County | 16 | 1870 | High | Satisfactory |
| Cargill Falls Windham County | 24 | 1925 | Significant | Satisfactory |
| Carmel Pond Dam New Haven County | 12 | 1956 | Significant | Satisfactory |
| Carrington Pond Dam New Haven County | 8 | 1920 | Significant | Satisfactory |
| Carringtons Pond Dam Fairfield County | 13 | — | Significant | Satisfactory |
| Cavanaughs Pond Dam Windham County | 14 | — | Significant | Satisfactory |
| Cedar Lake Dam New Haven County | 17 | 1869 | Significant | Satisfactory |
| Chasmars Pond Dam Fairfield County | 11 | 1900 | Significant | Satisfactory |
| Cheshire Reservoir Dam New Haven County | 21 | 1908 | High | Satisfactory |
| Chestnut Brook Dam Middlesex County | 17 | — | Significant | Satisfactory |
| Clarks Pond Dam New Haven County | 30 | — | Significant | Satisfactory |
| Cockaponset Pond Dam Middlesex County | 10 | — | Significant | Satisfactory |
| Coginchaug River Dam #1 Middlesex County | 12 | — | Significant | Satisfactory |
| Cold Spring Flood Control Site #9 Dam Hartford County | 20 | — | High | Satisfactory |
| Collins Company Lower Dam Hartford County | 33 | — | Significant | Satisfactory |
| Columbia Lake Dam Tolland County | 28 | 1865 | High | Satisfactory |
| Conrad Pond Dam New Haven County | 22 | — | High | Satisfactory |
| Crescent Lake Dam Hartford County | 13 | 1900 | Significant | Satisfactory |
| Crossing At Lisbon Detention Dam New London County | 16 | 2008 | Significant | Satisfactory |
| Curtis Pond Dam Fairfield County | 15 | 1856 | Significant | Satisfactory |
| Davis Pond Dam Fairfield County | 12 | — | Significant | Satisfactory |
| Dayville Emergency Spillway Windham County | 8 | 1925 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.