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 776–800 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Old Brass Mill Pond Dam Litchfield County | 22 | — | Significant | Fair |
| Old Daniels Dam Windham County | 18 | 1880 | Significant | Satisfactory |
| Old Marsh Pond Dam Litchfield County | 30 | 1913 | High | Satisfactory |
| Old Mill Pond Dam Middlesex County | 6 | — | Significant | Satisfactory |
| Old Quarry Dam Litchfield County | 10 | — | Significant | Poor |
| Oneco Pond Dam Windham County | 9 | 1900 | Significant | Not Rated |
| Orchard Pond Dam Litchfield County | 4 | — | Significant | Not Rated |
| Orcutts Pond Dam Tolland County | 8 | 1850 | Significant | Not Rated |
| Ostrager Pond Dam Tolland County | 6 | — | Significant | Not Rated |
| Ouleout Lake Dam Litchfield County | 9 | 1900 | Significant | Not Rated |
| Oxoboxo Lake Dam New London County | 26 | 1810 | High | Satisfactory |
| Pachaug Pond Dam New London County | 17 | 1888 | High | Fair |
| Packers Pond Dam Windham County | 20 | 1880 | High | Satisfactory |
| Padanaram Reservoir Dam Fairfield County | 29 | 1883 | High | Satisfactory |
| Paddock Road Pond New Haven County | 8 | — | Significant | Fair |
| Page Park Pond Dam Hartford County | 8 | — | Significant | Poor |
| Pages Millpond Dam New Haven County | 11 | 1880 | Significant | Satisfactory |
| Pameacha Pond Dam Middlesex County | 11 | 1870 | Significant | Poor |
| Panther Pond Dam Litchfield County | 16 | — | Significant | Not Rated |
| Paparrazzo Dam Hartford County | 11 | — | Significant | Satisfactory |
| Paper Goods Pond Dam Hartford County | 30 | 1920 | Significant | Fair |
| Papermill Pond Dam New Haven County | 6 | — | Significant | Fair |
| Paper Mill Pond Dam Tolland County | — | 1900 | High | Satisfactory |
| Paper Mill Pond Dam New London County | 28 | 1870 | Significant | Poor |
| Parizek Pond Dam #1 Tolland County | 13 | 1870 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.