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 876–900 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Weiss Pond Dam Litchfield County | 5 | — | Significant | Satisfactory |
| Welch Pond Dam Windham County | 4 | — | Significant | Not Rated |
| Wells Pond Dam Tolland County | 11 | 1920 | Significant | Poor |
| Wendy Road Pond Dam Fairfield County | 11 | — | Significant | Not Rated |
| Wepawaug Reservoir Dam New Haven County | 18 | 1911 | Significant | Satisfactory |
| Werner Woods Pond Dam Hartford County | 24 | 1963 | Significant | Satisfactory |
| West Brook Diversion Dam New Haven County | 13 | — | Significant | Satisfactory |
| Westfield Falls Pond Dam Middlesex County | 11 | — | Significant | Satisfactory |
| West Fork Pond Dam Fairfield County | 4 | 1940 | Significant | Poor |
| West Hill Pond Dam Litchfield County | 12 | 1900 | Significant | Satisfactory |
| West Parish Trib Pond Dam Fairfield County | 2 | — | Significant | Not Rated |
| West Pond Dam New Haven County | 9 | — | Significant | Not Rated |
| Westport Pond Dam Fairfield County | 8 | — | Significant | Fair |
| Westport Pond Dam Fairfield County | 6 | — | Significant | Not Rated |
| West River Flood Control Dam and Levee New Haven County | 6 | 1987 | Significant | Fair |
| West River Pond Dam New Haven County | 24 | — | Significant | Fair |
| West Swamp Brook Dam (Gilbert) Middlesex County | 7 | — | Significant | Not Rated |
| Wheatons Brook Pond Windham County | — | — | Significant | Not Rated |
| Wheeler Pond Dam New London County | 20 | 1810 | Significant | Fair |
| Whippoorwill Pond Dam New London County | 16 | — | Significant | Satisfactory |
| Whist Pond Dam Litchfield County | 8 | 1900 | Significant | Satisfactory |
| Whites Pond Dam Hartford County | 20 | 1926 | Significant | Satisfactory |
| Whitmans Pond Dam & Dike Windham County | 8 | 1900 | Significant | Satisfactory |
| Wickaboxet Marsh Dam New London County | 8 | 1962 | Significant | Satisfactory |
| Wigwam Reservoir South Dam Litchfield County | 32 | 1893 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.