Dams in Windham County, Connecticut
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 Available | 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 Rated | 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 Rated | 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 Rated | 13 | Recreation | 1870 |
| Killingly Pond Dike | Significant | Fair | 12 | Other | |
| Cemetery Pond Dam | Significant | Not Rated | 12 | Recreation | |
| Amidon Farm Dam | Significant | Not Rated | 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 Rated | 12 | Recreation | 1850 |
| Little River Pond Dam | Significant | Not Rated | 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 Rated | 11 | Fish and Wildlife Pond | 1959 |
| Aqua Pond Dam | Significant | Satisfactory | 11 | Recreation | |
| Dickinson (a.k.a. Kenyon) Pond Dam | Significant | Not Rated | 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 Rated | 10 | Fish and Wildlife Pond | |
| Belden Dam | Significant | Not Rated | 10 | Other | 1900 |
| Frog Pond Dam | Significant | Satisfactory | 10 | Recreation | 1870 |
| Eddy Pray Reservoir | Significant | Not Rated | 10 | Recreation | 1900 |
| Bear Hill Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Up Dam (h Bigelow V G C) | Significant | Not Rated | 10 | Recreation | |
| Porter Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Oneco Pond Dam | Significant | Not Rated | 9 | Recreation | 1900 |
| Tetreault Pond | Significant | Not Rated | 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 Rated | 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 Rated | 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 Rated | 5 | Other | |
| Kenyon Road Pond | Significant | Not Rated | 5 | Recreation | |
| Armitage Pond Dam | Significant | Fair | 4 | Recreation | |
| Welch Pond Dam | Significant | Not Rated | 4 | Recreation | |
| Ross Management Area Pond Dam | Significant | Fair | 4 | Recreation | 1963 |
| Lake Chaffee Dam | Significant | Fair | 3 | Recreation | 1880 |
| Bennetts Pond | Significant | Not Rated | 2 | Recreation | |
| Bush Hill Pond | Significant | Not Rated | 0 | Recreation | |
| Wheatons Brook Pond | Significant | Not Rated | 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 Rated | 15 | Recreation | 1900 |
| Dayville Dike | Low | Satisfactory | 14 | Hydroelectric | 1925 |
| Quinebaug | Low | Satisfactory | 14 | Hydroelectric | 1855 |
| Corbin Wildlife Marsh Dam | Low | Not Rated | 13 | Fish and Wildlife Pond | 1967 |
| Indian Hollow Pond Dam | Low | Not Rated | 9 | Recreation | 1900 |