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 76–100 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Stanley Gladysz Dam Tolland County | 13 | 1967 | Significant | Satisfactory |
| Staffordville Reservoir Dam Tolland County | 30 | 1850 | High | Satisfactory |
| Stafford Reservoir #2 Dam Tolland County | 28 | 1966 | Significant | Satisfactory |
| Spring Lake Dam Hartford County | 13 | — | High | Satisfactory |
| Spectacle Swamp Flood Control Dam Fairfield County | 21 | 1973 | High | Satisfactory |
| Spaulding Pond Dam New London County | 31 | 1965 | High | Satisfactory |
| Spahn Pond Dam Fairfield County | 12 | 1925 | Significant | Satisfactory |
| South Pond Dam Litchfield County | 21 | 1850 | High | Satisfactory |
| South Norwalk Reservoir Dam Fairfield County | 36 | 1899 | High | Satisfactory |
| Southington Reservoir #3 Dam (Dike # 13132) Hartford County | 26 | — | High | Satisfactory |
| Southington Reservoir #2 Dam New Haven County | 38 | 1900 | Significant | Satisfactory |
| Southington Reservoir #1 Dam Hartford County | 18 | — | Significant | Satisfactory |
| Southington Memorial Park Dam Hartford County | 6 | — | Significant | Satisfactory |
| South Flood Control Dam Hartford County | 31 | 1964 | High | Satisfactory |
| Somersville Pond Dam Tolland County | 22 | 1890 | Significant | Satisfactory |
| Sochrin Pond Dam New Haven County | 13 | — | Significant | Satisfactory |
| Snake Meadow Pond Dam Windham County | 11 | 1920 | Significant | Satisfactory |
| Smith Pond Dam Windham County | 14 | 1900 | Significant | Satisfactory |
| Slopers Pond Dam Hartford County | 10 | — | Significant | Satisfactory |
| Skating Pond Dam New London County | 16 | 1968 | High | Satisfactory |
| Shuttle Meadow Reservoir Dam Hartford County | 48 | 1894 | High | Satisfactory |
| Shepaug Reservoir Dam Litchfield County | 65 | 1933 | High | Satisfactory |
| Shepaug New Haven County | 138 | 1955 | High | Satisfactory |
| Shepards Pond Dam Windham County | 38 | 1890 | Significant | Satisfactory |
| Shenipsit Lake Dam Tolland County | 27 | 1903 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.