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 826–850 of 1,225
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Great Meadow Brook Pond Dam New London County | 10 | — | Significant | Fair |
| Great Hill Road Pond Dam New Haven County | 18 | — | Significant | Satisfactory |
| Great Hill Reservior Dam New Haven County | 41 | 1909 | High | Poor |
| Great Hill Pond Dam Middlesex County | 14 | 1870 | Significant | Poor |
| Great Brook Reservoir Dam New Haven County | 12 | 1925 | Significant | Not Rated |
| Great Brook Dam #1 Middlesex County | 14 | — | Significant | Fair |
| Graves Dam New London County | 11 | — | Significant | Satisfactory |
| Gravel Pit Pond Dam New Haven County | 14 | — | Significant | Poor |
| Gravel Pit Pond Dam Fairfield County | 1 | — | Significant | Not Rated |
| Grannis Pond Dam Hartford County | 9 | — | Significant | Satisfactory |
| Graniss Pond Dam New Haven County | 6 | 1900 | Significant | Not Rated |
| Goulds Pond Dam New Haven County | 10 | — | Significant | Not Rated |
| Gould Manor Park Dam Fairfield County | 8 | — | Significant | Not Rated |
| Goss Brook Dam Windham County | 39 | 1963 | High | Satisfactory |
| Gorton Pond Dam New London County | 8 | 1860 | Significant | Fair |
| Goose Pond Dam Litchfield County | 11 | — | Low | Not Rated |
| Goodwin Pond Dam Litchfield County | 21 | — | Significant | Poor |
| Goodwin Hartford County | 125 | 1960 | High | Satisfactory |
| Goodman Upper Pond Dam New Haven County | 6 | — | Significant | Not Rated |
| Goodhall Dam Tolland County | 10 | 1976 | Low | Not Rated |
| Godfrey Pond Dam Fairfield County | 11 | 1783 | Significant | Fair |
| Globe Hollow Reservoir Dam Hartford County | 40 | 1906 | Significant | Fair |
| Glenville Pond Dam Tolland County | 19 | 1842 | Significant | Fair |
| Glasgo Pond Dam New London County | 26 | 1860 | High | Satisfactory |
| G J Keefe Dam Litchfield County | 3 | — | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.