104Total Dams
9High Hazard
87Significant
Dam Safety in Windham County, Connecticut
Windham County has 104 dams tracked in the National Inventory of Dams. Of these, 9 are classified as high hazard — meaning failure would probably cause loss of human life. Another 87 carry a significant hazard classification. Currently, 7 dams have a condition assessment of poor or unsatisfactory.
The average dam in Windham County is 113 years old. The most common purpose is recreation. The tallest dam is Goss Brook Dam at 39 ft.
Explore more: Oldest dams in Connecticut · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Goss Brook Dam | High | Satisfactory | 39 | Recreation | 1963 |
| Willimantic Reservoir Dam | High | Satisfactory | 29 | Water Supply | 1885 |
| North Grosvenordale Dam | High | Poor | 25 | Recreation | 1900 |
| Packers Pond Dam | High | Satisfactory | 20 | Recreation | 1880 |
| Big Pond Dam | High | Satisfactory | 20 | Recreation | 1870 |
| Sterling Pond Dam | High | Satisfactory | 19 | Recreation | 1870 |
| West Thompson Dam - Reardon Road Dike | High | Not assessed | 19 | Flood Risk Reduction | 1965 |
| Acme Pond Dam | High | Satisfactory | 16 | Recreation | 1846 |
| Quaddick Reservoir Dike | High | Satisfactory | 6 | Recreation | 1991 |
| Shepards Pond Dam | Significant | Satisfactory | 38 | Water Supply | 1890 |
| Crystal Pond Dam | Significant | Fair | 31 | Recreation | 1900 |
| Abbott's Pond Dam | Significant | Satisfactory | 28 | Recreation | 1960 |
| Cargill Falls | Significant | Satisfactory | 24 | Hydroelectric | 1925 |
| Ashford Lake Dam | Significant | Satisfactory | 23 | Recreation | 1949 |
| Potash Pond Dam | Significant | Fair | 21 | Recreation | 1880 |
| Happy Acres Dam | Significant | Satisfactory | 20 | Recreation | 1973 |
| Ragged Hill Pond Dam | Significant | Fair | 20 | Recreation | |
| Witches Wood Lake Dam | Significant | Satisfactory | 20 | Recreation | 1963 |
| Morey Pond Dam | Significant | Satisfactory | 19 | Recreation | 1870 |
| Hale Dam | Significant | Not assessed | 18 | Recreation | 1900 |
| Old Daniels Dam | Significant | Satisfactory | 18 | Recreation | 1880 |
| Five Mile | Significant | Satisfactory | 17 | Hydroelectric | 1855 |
| Ross Pond Dam | Significant | Satisfactory | 17 | Recreation | 1900 |
| Halls Pond Dam | Significant | Fair | 16 | Recreation | 1900 |
| Peck Pond Dam | Significant | Poor | 16 | Recreation | 1930 |
| Poole Pond Dam | Significant | Satisfactory | 16 | Recreation | 1974 |
| Lake Albert Dam | Significant | Satisfactory | 15 | Recreation | 1970 |
| Lake Bungee Dam | Significant | Satisfactory | 15 | Other | 1959 |
| Cavanaughs Pond Dam | Significant | Satisfactory | 14 | ||
| New Pond Dam | Significant | Not assessed | 14 | Recreation | |
| Smith Pond Dam | Significant | Satisfactory | 14 | Recreation | 1900 |
| Cat's Corner Dam | Significant | Fair | 14 | Recreation | 1980 |
| Quassett Lake Road Dam | Significant | Fair | 14 | Recreation | 1855 |
| Robinson Pond Dam | Significant | Fair | 14 | Recreation | 1966 |
| Fuller Dam | Significant | Fair | 13 | Recreation | |
| Bassett Pond Dam | Significant | Fair | 13 | Other | |
| Cady Pond Dam | Significant | Satisfactory | 13 | Recreation | 1865 |
| Chase Reservoir Dam | Significant | Fair | 13 | Recreation | 1870 |
| Crystal Pond Park Dam | Significant | Poor | 13 | Recreation | 1976 |
| Mavis Pond #1 Dam | Significant | Not assessed | 13 | Recreation | 1870 |
| Killingly Pond Dike | Significant | Fair | 12 | Other | |
| Cemetery Pond Dam | Significant | Not assessed | 12 | Recreation | |
| Amidon Farm Dam | Significant | Not assessed | 12 | Recreation | |
| Rogers Corporation Dam | Significant | Fair | 12 | Other | 1900 |
| Brown Pond Dam | Significant | Satisfactory | 12 | Recreation | 1980 |
| Beaupres Pond Dam | Significant | Satisfactory | 12 | Recreation | 1952 |
| Johnstone Pond Dam | Significant | Satisfactory | 12 | Recreation | |
| Chamberlain Pond Dam | Significant | Not assessed | 12 | Recreation | 1850 |
| Little River Pond Dam | Significant | Not assessed | 12 | Recreation | |
| Wilsonville Pond Dam | Significant | Fair | 12 | Recreation | 1880 |
| Windham 4h Lower Pond Dam | Significant | Unsatisfactory | 12 | Recreation | 1920 |
| Lisbon Pond Dam | Significant | Not assessed | 11 | Fish and Wildlife Pond | 1959 |
| Aqua Pond Dam | Significant | Satisfactory | 11 | Recreation | |
| Dickinson (a.k.a. Kenyon) Pond Dam | Significant | Not assessed | 11 | Recreation | 1949 |
| Reams Pond Dam | Significant | Satisfactory | 11 | Recreation | 1900 |
| Snake Meadow Pond Dam | Significant | Satisfactory | 11 | Recreation | 1920 |
| Romanek Pond Dam | Significant | Fair | 10 | Recreation | 1969 |
| Prior Fish & Wildlife Dam | Significant | Not assessed | 10 | Fish and Wildlife Pond | |
| Belden Dam | Significant | Not assessed | 10 | Other | 1900 |
| Frog Pond Dam | Significant | Satisfactory | 10 | Recreation | 1870 |
| Eddy Pray Reservoir | Significant | Not assessed | 10 | Recreation | 1900 |
| Bear Hill Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Up Dam (h Bigelow V G C) | Significant | Not assessed | 10 | Recreation | |
| Porter Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Oneco Pond Dam | Significant | Not assessed | 9 | Recreation | 1900 |
| Tetreault Pond | Significant | Not assessed | 9 | Recreation | 1900 |
| Bibbins Pond Dam | Significant | Satisfactory | 9 | Recreation | 1880 |
| Lake Marie Dam | Significant | Satisfactory | 9 | Recreation | 1880 |
| Pine Acres Lake Dam | Significant | Satisfactory | 9 | Recreation | 1880 |
| Wildlife Marsh #2 Dam | Significant | Fair | 9 | Fish and Wildlife Pond | 1974 |
| Ballouville Dam | Significant | Not assessed | 8 | Recreation | 1900 |
| Coderre Pond Dam | Significant | Poor | 8 | Recreation | |
| Hampton Reservoir Dam | Significant | Satisfactory | 8 | Recreation | 1944 |
| Whitmans Pond Dam & Dike | Significant | Satisfactory | 8 | Recreation | 1900 |
| Crystal Pond Dam | Significant | Poor | 8 | Recreation | 1940 |
| Douglas Road Pond Dam | Significant | Satisfactory | 8 | Recreation | |
| Elmville Dam | Significant | Fair | 7 | Recreation | 1900 |
| Brown Hill Dam | Significant | Fair | 7 | Fish and Wildlife Pond | |
| Griggs Pond Dam | Significant | Satisfactory | 7 | Recreation | 1870 |
| Furnace Pond Dam | Significant | Poor | 7 | Recreation | 1870 |
| Middle Reservoir Dam | Significant | Not assessed | 7 | Other | |
| Burdick Bros Dam | Significant | Fair | 7 | Recreation | |
| Moosup Pond Dam | Significant | Fair | 7 | Recreation | 1970 |
| Exeter Energy Storage Basin Dam | Significant | Satisfactory | 7 | Water Supply | 2003 |
| Black Spruce Pond Dam | Significant | Satisfactory | 6 | Fish and Wildlife Pond | 1960 |
| Nightingale Pond Dam | Significant | Satisfactory | 6 | Recreation | 1722 |
| North Alvia Chase Reservoir Dam | Significant | Satisfactory | 6 | Other | |
| Horse Brook Dam | Significant | Not assessed | 5 | Other | |
| Kenyon Road Pond | Significant | Not assessed | 5 | Recreation | |
| Armitage Pond Dam | Significant | Fair | 4 | Recreation | |
| Welch Pond Dam | Significant | Not assessed | 4 | Recreation | |
| Ross Management Area Pond Dam | Significant | Fair | 4 | Recreation | 1963 |
| Lake Chaffee Dam | Significant | Fair | 3 | Recreation | 1880 |
| Bennetts Pond | Significant | Not assessed | 2 | Recreation | |
| Bush Hill Pond | Significant | Not assessed | 0 | Recreation | |
| Wheatons Brook Pond | Significant | Not assessed | 0 | Recreation | |
| Scotland | Low | Satisfactory | 37 | Hydroelectric | 1909 |
| Brunswick | Low | Fair | 19 | Hydroelectric | 1891 |
| Mechanicsville | Low | Satisfactory | 18 | Hydroelectric | 1900 |
| River Run Dam | Low | Not assessed | 15 | Recreation | 1900 |
| Dayville Dike | Low | Satisfactory | 14 | Hydroelectric | 1925 |
| Quinebaug | Low | Satisfactory | 14 | Hydroelectric | 1855 |
| Corbin Wildlife Marsh Dam | Low | Not assessed | 13 | Fish and Wildlife Pond | 1967 |
| Indian Hollow Pond Dam | Low | Not assessed | 9 | Recreation | 1900 |