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 451–474 of 474
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Whites Pond Dam Hartford County | 20 | 1926 | Significant | Satisfactory |
| Whiting River Flood Control Dam Litchfield County | 80 | 1968 | High | Satisfactory |
| Whitmans Pond Dam & Dike Windham County | 8 | 1900 | Significant | Satisfactory |
| Whitney Flood Control Site #1 Dam Tolland County | 52 | 1962 | High | Satisfactory |
| Wickaboxet Marsh Dam New London County | 8 | 1962 | Significant | Satisfactory |
| Wigwam Reservoir South Dam Litchfield County | 32 | 1893 | Significant | Satisfactory |
| Williams Pond Dam New London County | 26 | 1865 | Significant | Satisfactory |
| Willimantic Reservoir Dam Windham County | 29 | 1885 | High | Satisfactory |
| Wilson Brook Detention Dam Hartford County | 20 | 1981 | Significant | Satisfactory |
| Winchester Club Pond Dam Litchfield County | 9 | 1927 | Significant | Satisfactory |
| Winchester Lake Dam Litchfield County | 23 | — | Significant | Satisfactory |
| Wintonbury Flood Control Site #1 Dam Hartford County | 23 | 1963 | High | Satisfactory |
| Witches Wood Lake Dam Windham County | 20 | 1963 | Significant | Satisfactory |
| Wolcott Reservoir Conveyor Dam Hartford County | 21 | — | Significant | Satisfactory |
| Wood Creek Flood Control Dam Site #9 Litchfield County | 36 | 1971 | High | Satisfactory |
| Wood Creek Pond Dam Litchfield County | 22 | 1900 | Significant | Satisfactory |
| Woodridge Lake Dam Litchfield County | 34 | 1970 | High | Satisfactory |
| Woodridge Lake Dam Hartford County | 12 | 1900 | Significant | Satisfactory |
| Wooley Pond Dam Fairfield County | 15 | 1800 | Significant | Satisfactory |
| Wyantenock Wildlife Marsh Dam #3 Litchfield County | 9 | — | Significant | Satisfactory |
| Wyantenock Wildlife Marsh Dam #4 Litchfield County | 8 | — | Significant | Satisfactory |
| Wyassup Lake Dam New London County | 15 | 1920 | Significant | Satisfactory |
| Wyre - Wynd New London County | 21 | 1913 | Low | Satisfactory |
| Zeiner Pond Litchfield County | 20 | 1911 | Significant | Satisfactory |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.