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 1–25 of 53
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ymca Pond Dam New London County | 7 | 1920 | Low | Not Rated |
| Wyre - Wynd New London County | 21 | 1913 | Low | Satisfactory |
| Witch Meadow Pond Dam New London County | 13 | 1965 | Low | Not Rated |
| Whitford Pond Dam New London County | 7 | — | Low | Poor |
| Upper Mill Pond Dam Middlesex County | 8 | 1813 | Low | Poor |
| Transylvania Pond Dam Litchfield County | 8 | 1893 | Low | Fair |
| Tower Hill Lake Dam Middlesex County | 20 | 1920 | Low | Not Rated |
| Tantaquidgeon New London County | 30 | — | Low | Satisfactory |
| Still Waters Pond Dam New London County | 8 | — | Low | Not Rated |
| Spaulding Pond Dam Litchfield County | 11 | — | Low | Not Rated |
| Sessions Meadow Marsh Dam Tolland County | 11 | 1956 | Low | Not Rated |
| Scotland Windham County | 37 | 1909 | Low | Satisfactory |
| Rizzo Pond Dam Litchfield County | 18 | 1964 | Low | Satisfactory |
| River Run Dam Windham County | 15 | 1900 | Low | Not Rated |
| Quinebaug Windham County | 14 | 1855 | Low | Satisfactory |
| Poquonock Lake Dam New London County | 10 | — | Low | Not Rated |
| Pinneys Pond Dam Tolland County | 10 | 1880 | Low | Not Rated |
| Pine Meadows Park Pond Pond Dam New London County | 22 | 1959 | Low | Not Rated |
| Peck Pond Dam Litchfield County | 8 | — | Low | Not Rated |
| Occum New London County | 14 | 1900 | Low | Satisfactory |
| Morosani Pond #2 Dam Litchfield County | 18 | 1971 | Low | Not Rated |
| Mill Pond Dam New London County | 8 | — | Low | Poor |
| Miles Pond Dam Litchfield County | 14 | 1920 | Low | Not Rated |
| Mechanicsville Windham County | 18 | 1900 | Low | Satisfactory |
| Mcgrath Dam New London County | 10 | 1900 | Low | Not Rated |
Page 1 of 3Next
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.