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 151–175 of 254
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Nepaug Dam Litchfield County | 156 | 1918 | High | Fair |
| New Pond Dam Tolland County | 13 | 1900 | Significant | Fair |
| North Pond Dam New Haven County | 14 | 1967 | Significant | Fair |
| North Stamford Reservoir Dam Fairfield County | 40 | 1908 | High | Fair |
| Notch Pond Dam Tolland County | 8 | — | Significant | Fair |
| Old Brass Mill Pond Dam Litchfield County | 22 | — | Significant | Fair |
| Pachaug Pond Dam New London County | 17 | 1888 | High | Fair |
| Paddock Road Pond New Haven County | 8 | — | Significant | Fair |
| Paper Goods Pond Dam Hartford County | 30 | 1920 | Significant | Fair |
| Papermill Pond Dam New Haven County | 6 | — | Significant | Fair |
| Parizek Pond Dam #1 Tolland County | 13 | 1870 | Significant | Fair |
| Partridge Hallow Dam Hartford County | 15 | — | Significant | Fair |
| Pataguanset Lake Dam New London County | 12 | 1942 | High | Fair |
| Pattaconk Reservoir Dam Middlesex County | 23 | 1932 | High | Fair |
| Peck'S Meadow Pond Dam Middlesex County | 8 | 1880 | Significant | Fair |
| Pemberwick Dam Fairfield County | 44 | 1867 | High | Fair |
| Perry Pond Dam Fairfield County | 15 | — | Significant | Fair |
| Picketts Pond Dam New Haven County | 3 | 1963 | Significant | Fair |
| Pierce'S Detention Dam New Haven County | 8 | — | Significant | Fair |
| Pin Shop Pond Dam Litchfield County | 23 | 1870 | High | Fair |
| Pomeroy Flood Control Site #3 Dam Tolland County | 36 | 1960 | High | Fair |
| Post Pond Dam Middlesex County | 8 | — | Significant | Fair |
| Potash Pond Dam Windham County | 21 | 1880 | Significant | Fair |
| Pound Pond Dam Fairfield County | 18 | — | Significant | Fair |
| Quassapaug Lake Dam New Haven County | 24 | 1900 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.