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 226–250 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sperry Pond Dam Tolland County | 15 | — | Significant | Fair |
| Spencer Pond Dam New London County | 12 | 1900 | Significant | Poor |
| Spectacle Swamp Flood Control Dam Fairfield County | 21 | 1973 | High | Satisfactory |
| Spaulding Pond Dam Litchfield County | 11 | — | Low | Not Rated |
| Spaulding Pond Dam New London County | 7 | 1900 | Significant | Fair |
| 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 |
| South Meadows Dike Hartford County | 43 | 1939 | High | Not Rated |
| 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 |
| Southerly Pond Dam Litchfield County | 6 | — | Significant | Not Rated |
| 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 |
| Snail Pond New Haven County | 6 | — | Significant | Not Rated |
| Smith Pond Dam Litchfield County | 10 | 1927 | Significant | Poor |
| Smith Pond Dam Windham County | 14 | 1900 | Significant | Satisfactory |
| Smith Pond Dam Tolland County | 3 | — | Significant | Not Rated |
| Smith Pond Dam New London County | 13 | — | Significant | Not Rated |
| Small Pond Dam Fairfield County | 12 | — | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.