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 751–775 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Spahn Pond Dam Fairfield County | 12 | 1925 | Significant | Satisfactory |
| Spaulding Pond Dam New London County | 7 | 1900 | Significant | Fair |
| Spencer Pond Dam New London County | 12 | 1900 | Significant | Poor |
| Sperry Pond Dam Tolland County | 15 | — | Significant | Fair |
| Sportsmen Pond Dam Middlesex County | 13 | — | Significant | Not Rated |
| Spring Lake Dam New Haven County | 9 | — | Significant | Not Rated |
| Spring Lake Dam Fairfield County | 7 | 1900 | Significant | Fair |
| Springs Pond Dam Tolland County | 14 | 1900 | Significant | Not Rated |
| Spring Street Dam Middlesex County | 11 | — | Significant | Not Rated |
| Staba Pond Middlesex County | 4 | — | Significant | Not Rated |
| Stafford Reservoir #2 Dam Tolland County | 28 | 1966 | Significant | Satisfactory |
| Stafford Reservoir #3 Dam Tolland County | 11 | 1930 | Significant | Poor |
| Stafford Reservoir #4 Dam Tolland County | 8 | 1928 | Significant | Poor |
| Stanley Gladysz Dam Tolland County | 13 | 1967 | Significant | Satisfactory |
| Stanley Hart Pond Dam Hartford County | 4 | — | Significant | Fair |
| Stanley Pond Dam Hartford County | 1 | — | Significant | Not Rated |
| Stanley Quarter Park Pond Dam Hartford County | 21 | — | Significant | Satisfactory |
| Stannard Pond Dam New Haven County | 8 | — | Significant | Satisfactory |
| Starr Mill Pond Dam Middlesex County | 10 | 1875 | Significant | Fair |
| Stateline Pond Dam Tolland County | 7 | 1900 | Significant | Not Rated |
| State Park Pond Dam Middlesex County | 11 | — | Significant | Poor |
| Steichens Pond Dam Fairfield County | 10 | 1880 | Significant | Not Rated |
| Stein Pond Dam Litchfield County | 12 | — | Significant | Not Rated |
| Stepney Dam Fairfield County | 10 | 1927 | Significant | Fair |
| Stevens Mill Pond Dam Hartford County | 25 | 1954 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.