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 276–300 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Seymour Reservoir #2 Dam New Haven County | 31 | 1948 | Significant | Fair |
| Seymour Reservoir #1 Dam New Haven County | 26 | 1898 | Significant | Fair |
| Seyer Dam Fairfield County | 11 | 1900 | Significant | Fair |
| Sessions Meadow Marsh Dam Tolland County | 11 | 1956 | Low | Not Rated |
| Serra Pond Dam Litchfield County | 15 | 1972 | Significant | Satisfactory |
| Serenity Pond Dam Fairfield County | 12 | 1928 | Significant | Fair |
| Seeley Pond Dam Fairfield County | 10 | — | Significant | Poor |
| Scovill Reservoir Dam Middlesex County | 21 | 1860 | High | Satisfactory |
| Scoville Reservoir Dike New Haven County | 15 | — | High | Satisfactory |
| Scotland Windham County | 37 | 1909 | Low | Satisfactory |
| Schweitzer Pond Dam Hartford County | 14 | — | Significant | Not Rated |
| Schwartz Pond Dam Hartford County | 16 | 1920 | Significant | Not Rated |
| Schwartz Pond Dam Litchfield County | 20 | 1964 | Significant | Fair |
| Schultz Pond Dam Hartford County | 12 | — | Significant | Not Rated |
| Schriber Park (Great Brook Dam) Middlesex County | 15 | — | Significant | Fair |
| Schreeder Pond Dam Middlesex County | 11 | 1900 | Significant | Satisfactory |
| Schofield Pond Dam New London County | 10 | 1920 | Significant | Not Rated |
| Schildgen Pond Dam New Haven County | 4 | — | Significant | Not Rated |
| Schatten Pond Dam Fairfield County | 12 | — | Significant | Not Rated |
| Scarletts Mill Dam Hartford County | 15 | — | Significant | Fair |
| Sawmill Pond Dam New London County | 12 | 1870 | High | Satisfactory |
| Savin Lake Dam New London County | 18 | 1920 | Significant | Fair |
| Saville Dam Litchfield County | 137 | 1940 | High | Satisfactory |
| Saugatuck River Dam Fairfield County | 10 | — | Significant | Not Rated |
| Sandy Hook Fairfield County | 35 | 1905 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.