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 251–275 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Roderick Wyant Pond Dam Litchfield County | 12 | 1963 | Significant | Not Rated |
| Rockland Pond Dam New London County | 10 | 1900 | Significant | Satisfactory |
| Rock Lake Dam Fairfield County | 37 | 1875 | Significant | Satisfactory |
| Robinson Pond Dam Windham County | 14 | 1966 | Significant | Fair |
| Robin Hill Dam Litchfield County | 12 | — | Significant | Not Rated |
| Robertsville Dam Litchfield County | 29 | 1887 | Significant | Satisfactory |
| Roberts Pond Dam Fairfield County | 8 | — | Significant | Satisfactory |
| Road Pond Dam Fairfield County | 8 | — | Significant | Not Rated |
| Riverdance Mill Dam Litchfield County | 14 | — | Significant | Satisfactory |
| Risley Reservoir Dam (No Longer Using 14605) Tolland County | 28 | 1853 | Significant | Fair |
| Risdon Pond Dam New Haven County | 27 | 1890 | Significant | Unsatisfactory |
| Rimmon Dam New Haven County | 18 | 1900 | Significant | Not Rated |
| Riga Lake Dam Litchfield County | 10 | 1900 | Significant | Satisfactory |
| Ridgewood Country Club Pond Fairfield County | 8 | — | Significant | Satisfactory |
| Ridgeview Pond Dam Fairfield County | 10 | — | Significant | Satisfactory |
| Ridge Upper Det Pond New Haven County | — | — | Significant | Not Rated |
| Ridge Pond Dam Fairfield County | 6 | — | Significant | Fair |
| Ridge Lower Detention Dam New Haven County | 9 | — | Significant | Satisfactory |
| Rhode Island Pond Dam Tolland County | 20 | 1880 | Significant | Satisfactory |
| Reserve Detention Basin L Dam Fairfield County | 24 | 2009 | Significant | Not Rated |
| Reilly Pond New Haven County | 2 | — | Significant | Not Rated |
| Reichenbach Pond Dam Litchfield County | 15 | — | Significant | Not Rated |
| Red Mill Pond Dam New London County | 18 | — | Significant | Satisfactory |
| Red Cedar Lake Dam New London County | 9 | 1900 | Significant | Fair |
| Reams Pond Dam Windham County | 11 | 1900 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.