209Total Dams
44High Hazard
162Significant
Dam Safety in Fairfield County, Connecticut
Fairfield County has 209 dams tracked in the National Inventory of Dams. Of these, 44 are classified as high hazard — meaning failure would probably cause loss of human life. Another 162 carry a significant hazard classification. Currently, 20 dams have a condition assessment of poor or unsatisfactory.
The average dam in Fairfield County is 120 years old. The most common purpose is recreation. The tallest dam is Easton Reservoir Dam at 123 ft.
Explore more: Oldest dams in Connecticut · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Easton Reservoir Dam | High | Fair | 123 | Water Supply | 1926 |
| John D. Milne Lake Dam | High | Fair | 105 | Water Supply | 1947 |
| Stevenson | High | Satisfactory | 103 | Hydroelectric | 1919 |
| Hemlock Reservoir Dam | High | Fair | 75 | Water Supply | 1914 |
| Samuel Bargh Reservoir Dam | High | Satisfactory | 75 | Water Supply | 1955 |
| Means Brook Reservoir Dam | High | Satisfactory | 54 | Water Supply | 1917 |
| American Can Company Dam | High | Satisfactory | 53 | Recreation | 1970 |
| Laurel Reservoir Dam | High | Satisfactory | 50 | Water Supply | 1923 |
| Trap Falls Reservoir Dam | High | Fair | 48 | Water Supply | 1905 |
| East Lake Reservoir Dam | High | Satisfactory | 47 | Water Supply | 1855 |
| Beaver Dam Lake Dam | High | Satisfactory | 47 | Recreation | 1901 |
| Pemberwick Dam | High | Fair | 44 | Recreation | 1867 |
| New Canaan Reservoir Dam | High | Satisfactory | 44 | Water Supply | 1898 |
| West Lake Reservoir Dam | High | Satisfactory | 42 | Water Supply | 1906 |
| North Stamford Reservoir Dam | High | Fair | 40 | Water Supply | 1908 |
| American Felt Dam | High | Satisfactory | 37 | Recreation | 1867 |
| Popps Mountain Dike | High | Satisfactory | 36 | Water Supply | 1941 |
| Putnam Reservoir Dam | High | Satisfactory | 35 | Water Supply | 1910 |
| Bunnells Pond Dam | High | Fair | 33 | Recreation | 1906 |
| Canoe Brook Lake Dam | High | Satisfactory | 33 | Recreation | 1870 |
| Mianus Filter Plant Dam | High | Fair | 31 | Water Supply | 1875 |
| Upper Kohanza Lake Dam | High | Satisfactory | 30 | Water Supply | 1866 |
| Chestnut Ridge Dam | High | Fair | 29 | Water Supply | 1910 |
| Padanaram Reservoir Dam | High | Satisfactory | 29 | Water Supply | 1883 |
| Samp Mortar Reservoir Dam | High | Satisfactory | 29 | Recreation | 1901 |
| Lake Forest Dam | High | Satisfactory | 28 | Recreation | 1899 |
| Pinewood Lake Dam | High | Satisfactory | 28 | Recreation | 1890 |
| Lower Kohanza Lake Dam | High | Satisfactory | 25 | Water Supply | 1860 |
| Grupes Reservoir Dam | High | Poor | 24 | Water Supply | 1871 |
| Factory Pond Dam | High | Poor | 24 | Recreation | 1874 |
| Popes Pond Dam | High | Satisfactory | 24 | Water Supply | 1965 |
| Nash Pond Dam | High | Satisfactory | 22 | Recreation | 1879 |
| Spectacle Swamp Flood Control Dam | High | Satisfactory | 21 | Flood Risk Reduction | 1973 |
| Great Pond Dam | High | Fair | 20 | Other | |
| Mercers Pond Dam | High | Satisfactory | 20 | Recreation | 1870 |
| South Norwalk Reservoir Dike | High | Satisfactory | 20 | Water Supply | 1899 |
| Island Brook Lagoon Dam | High | Fair | 19 | Recreation | |
| Eureka Lake Dam | High | Fair | 18 | Water Supply | 1878 |
| Margerie Lake Reservoir North Dike | High | Satisfactory | 17 | Water Supply | |
| Shelton Reservoir #2 Dam | High | Fair | 16 | Recreation | 1900 |
| Rockwood Lake North Street Dike | High | Satisfactory | 12 | Water Supply | 1893 |
| Great Swamp Flood Control Dam | High | Satisfactory | 12 | Flood Risk Reduction | 1979 |
| Meadow Ridge Fire Irrigation Pond Dam | High | Fair | 8 | Fire Protection, Stock, Or Small Fish Pond | |
| Meadow Ridge Detention Dam | High | Poor | 6 | Flood Risk Reduction | |
| Rock Lake Dam | Significant | Satisfactory | 37 | Water Supply | 1875 |
| Sandy Hook | Significant | Satisfactory | 35 | Hydroelectric | 1905 |
| Walnut Hill Pond Dam | Significant | Fair | 27 | Recreation | 1962 |
| Shadow Lake Dam | Significant | Fair | 25 | Recreation | 1937 |
| Ville Pond Dam | Significant | Satisfactory | 25 | Recreation | |
| Reserve Detention Basin L Dam | Significant | Not assessed | 24 | Flood Risk Reduction | 2009 |
| Isinglass Reservoir Dam | Significant | Fair | 24 | Water Supply | |
| Lake Mauweehoo Dam | Significant | Satisfactory | 22 | Recreation | 1906 |
| Cobbs Mill Pond Dam | Significant | Fair | 21 | Recreation | 1892 |
| Wilcox Pond Dam | Significant | Fair | 20 | Recreation | |
| Mianus River Dam | Significant | Satisfactory | 20 | Recreation | 1920 |
| Lake Mead Dam | Significant | Not assessed | 20 | Fish and Wildlife Pond | |
| Farringtons Pond Dam | Significant | Satisfactory | 20 | Recreation | 1900 |
| Shelton Reservoir #3 Dam | Significant | Fair | 20 | Water Supply | 1915 |
| Far Mill River Dam | Significant | Satisfactory | 19 | Recreation | |
| Rose Hill Ave Pond Dam | Significant | Fair | 19 | Other | |
| Silvermine Dam | Significant | Fair | 18 | Recreation | |
| Mathers Pond Dam | Significant | Satisfactory | 18 | Recreation | 1921 |
| East Pond Dam | Significant | Poor | 18 | Recreation | |
| Lower Rocky Glen Dam | Significant | Not assessed | 18 | Recreation | 1870 |
| Pound Pond Dam | Significant | Fair | 18 | Other | |
| Bendels Pond Dam | Significant | Satisfactory | 18 | Recreation | |
| Lee's Pond Dam | Significant | Poor | 18 | Recreation | 1903 |
| Lake Naraneka Dam | Significant | Satisfactory | 18 | Recreation | 1937 |
| Millard Pond Dam | Significant | Satisfactory | 17 | Recreation | |
| Union Pond Dam | Significant | Poor | 16 | Water Supply | |
| F W Perry Dam | Significant | Not assessed | 16 | Recreation | 1972 |
| Armstrong Park Pond Dam | Significant | Satisfactory | 16 | Recreation | |
| Babcock Pond Dam | Significant | Satisfactory | 15 | Recreation | |
| Wooley Pond Dam | Significant | Satisfactory | 15 | Recreation | 1800 |
| Perry Pond Dam | Significant | Fair | 15 | Recreation | |
| Mountain Pond Dam | Significant | Satisfactory | 15 | Water Supply | 1901 |
| Curtis Pond Dam | Significant | Satisfactory | 15 | Irrigation | 1856 |
| Success Lake Dam | Significant | Not assessed | 15 | Fish and Wildlife Pond | 1875 |
| Topping Road Dam | Significant | Poor | 15 | Recreation | 1920 |
| Indian Spring Pond Dam | Significant | Not assessed | 15 | Recreation | 1925 |
| Angulus Pond Dam | Significant | Not assessed | 14 | Recreation | |
| Above Pond Dam | Significant | Satisfactory | 14 | Recreation | |
| Timber Lake Dam | Significant | Fair | 14 | Recreation | 1957 |
| Lake Windwing Dam | Significant | Fair | 14 | Recreation | 1900 |
| Forest Lake Dam | Significant | Not assessed | 14 | Recreation | 1930 |
| Milbrook Upper Lake Dam | Significant | Poor | 14 | Recreation | |
| Freemans Pond Dam | Significant | Satisfactory | 14 | Recreation | |
| Boggs Pond Dam | Significant | Satisfactory | 14 | Recreation | 1900 |
| Browns Brook Dam | Significant | Fair | 14 | Recreation | 1836 |
| Jelliff Mill Pond Dam | Significant | Satisfactory | 14 | Recreation | |
| Millers Pond Dam #1 | Significant | Fair | 13 | Fish and Wildlife Pond | |
| Murphy Pond Dam | Significant | Poor | 13 | Recreation | 1920 |
| Brewster Pond Dam | Significant | Satisfactory | 13 | Recreation | |
| King Lake Dam | Significant | Not assessed | 13 | Recreation | |
| Highstead Pond Dam | Significant | Fair | 13 | Other | 1985 |
| Carringtons Pond Dam | Significant | Satisfactory | 13 | Recreation | |
| Hasen Pond Dam | Significant | Not assessed | 12 | Recreation | |
| Eutro Pond Dam | Significant | Satisfactory | 12 | Other | |
| Pepper Lake Dam | Significant | Not assessed | 12 | Recreation | |
| Schatten Pond Dam | Significant | Not assessed | 12 | Recreation | |
| Carp Road Dam | Significant | Fair | 12 | Recreation | |
| Spahn Pond Dam | Significant | Satisfactory | 12 | Recreation | 1925 |
| Tarrywile Lake Dam | Significant | Satisfactory | 12 | Recreation | 1900 |
| Small Pond Dam | Significant | Not assessed | 12 | Recreation | |
| Davis Pond Dam | Significant | Satisfactory | 12 | Recreation | |
| Thrushwood Lake Dam | Significant | Fair | 12 | Recreation | |
| Aspetuck River Dam | Significant | Satisfactory | 12 | Recreation | |
| Beard Mill Pond Dam | Significant | Not assessed | 12 | Recreation | |
| Lees Pond #1 Dam | Significant | Not assessed | 12 | Recreation | |
| Serenity Pond Dam | Significant | Fair | 12 | Recreation | 1928 |
| Hattertown Pond Dam | Significant | Satisfactory | 11 | Recreation | 1840 |
| Cross Pond Dam | Significant | Not assessed | 11 | Recreation | |
| Seyer Dam | Significant | Fair | 11 | Recreation | 1900 |
| Godfrey Pond Dam | Significant | Fair | 11 | Recreation | 1783 |
| Stillman Pond Dam | Significant | Satisfactory | 11 | Other | 1915 |
| Huntington Pond Dam | Significant | Satisfactory | 11 | Recreation | 1880 |
| Aspetuck Reservoir Dam | Significant | Satisfactory | 11 | Water Supply | 1913 |
| Parks Pond Dam #2 | Significant | Satisfactory | 11 | Recreation | |
| Chasmars Pond Dam | Significant | Satisfactory | 11 | Recreation | 1900 |
| Saddle Pond Dam | Significant | Satisfactory | 11 | Recreation | 1920 |
| Wendy Road Pond Dam | Significant | Not assessed | 11 | Recreation | |
| Warner Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Steichens Pond Dam | Significant | Not assessed | 10 | Recreation | 1880 |
| Wataba Lake Dam | Significant | Fair | 10 | Recreation | 1900 |
| Newmanco Dam | Significant | Not assessed | 10 | Other | |
| Valley Pond Dam | Significant | Not assessed | 10 | Recreation | |
| Frye Lake Dam | Significant | Satisfactory | 10 | Recreation | 1930 |
| Alden Pond Dam | Significant | Not assessed | 10 | Recreation | |
| Blanchard Pond Dam | Significant | Not assessed | 10 | Water Supply | |
| Thayers Pond Dam | Significant | Not assessed | 10 | Recreation | 1920 |
| Valley Lake Dam | Significant | Not assessed | 10 | Recreation | |
| Ridgeview Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Mcmanus Lake Dam | Significant | Satisfactory | 10 | Recreation | |
| Rogers Pond Dam | Significant | Poor | 10 | Recreation | |
| Lockwood Pond Dam | Significant | Fair | 10 | Recreation | |
| Collins Pond Dam | Significant | Poor | 10 | Recreation | |
| Stepney Dam | Significant | Fair | 10 | Fish and Wildlife Pond | 1927 |
| Holy Ghost Fathers Pond | Significant | Not assessed | 10 | Recreation | |
| Hams Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Seeley Pond Dam | Significant | Poor | 10 | Recreation | |
| Button Mill Pond Dam | Significant | Fair | 10 | Recreation | |
| Florsheim Pond Dam | Significant | Fair | 10 | Recreation | 1874 |
| Waubeeka Lake Dam | Significant | Satisfactory | 10 | Recreation | 1933 |
| Saugatuck River Dam | Significant | Not assessed | 10 | Recreation | |
| Sherwood Mill Pond Dam | Significant | Not assessed | 10 | Recreation | 1900 |
| Green Pond Dam | Significant | Satisfactory | 10 | Recreation | 1900 |
| Greenley Pond Dam | Significant | Not assessed | 9 | Recreation | |
| Dublin Hill Dam | Significant | Not assessed | 9 | Recreation | |
| Taylors Pond Dam | Significant | Poor | 9 | Recreation | |
| Ehrsam Pond Dam | Significant | Not assessed | 9 | Recreation | |
| Blind Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Myers Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| East Pond Dam Greenwich Creek | Significant | Not assessed | 9 | Recreation | |
| Blackhouse Road Pond Dam | Significant | Poor | 9 | Recreation | |
| Dingle Brook Lane Dam | Significant | Not assessed | 8 | Recreation | |
| Field Dam | Significant | Not assessed | 8 | Other | |
| Roberts Pond Dam | Significant | Satisfactory | 8 | Other | |
| Johns Pond Dam | Significant | Fair | 8 | Recreation | |
| Westport Pond Dam | Significant | Fair | 8 | Recreation | |
| Ridgewood Country Club Pond | Significant | Satisfactory | 8 | Recreation | |
| Streets Pond Dam | Significant | Satisfactory | 8 | Recreation | |
| Doyles Pond Dam | Significant | Fair | 8 | Other | |
| Putnam Park Pond Dam | Significant | Satisfactory | 8 | Recreation | 1900 |
| Road Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Putnam Memorial Park Pond Dam | Significant | Poor | 8 | Fish and Wildlife Pond | |
| Newtown Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Rowayton Pond Dam | Significant | Poor | 8 | Recreation | |
| Gould Manor Park Dam | Significant | Not assessed | 8 | Recreation | |
| Cos Cob Pond Dam | Significant | Fair | 8 | Recreation | |
| Ferndale Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Wilshire Pond Dam | Significant | Fair | 8 | Recreation | 1920 |
| Merten's Mill Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Leroy Pond Dam | Significant | Not assessed | 7 | Recreation | |
| Kovac's Pond Dam | Significant | Satisfactory | 7 | Recreation | |
| Dingletown Road Dam | Significant | Not assessed | 7 | Recreation | |
| Spring Lake Dam | Significant | Fair | 7 | Recreation | 1900 |
| Lake Wackawana Dam and Dike | Significant | Not assessed | 7 | Other | |
| Plymouth Avenue Pond Dam | Significant | Poor | 7 | Recreation | |
| Holts Ice Pond Dam | Significant | Not assessed | 7 | Recreation | |
| Mamanasco Lake Dam | Significant | Fair | 6 | Recreation | 1870 |
| Ballwall Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Siscowit Reservoir Dam | Significant | Fair | 6 | Water Supply | 1865 |
| Coat Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Westport Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Betts Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Hickok Pond Dam | Significant | Satisfactory | 6 | Recreation | |
| Ridge Pond Dam | Significant | Fair | 6 | Recreation | |
| Two Acre Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Cooper Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Ironworks Road Pond Dam | Significant | Satisfactory | 6 | Recreation | 1930 |
| Dominick's Pond Dam | Significant | Fair | 5 | Recreation | |
| Hall Pond Dam | Significant | Fair | 5 | Recreation | |
| Park Pond Dam | Significant | Not assessed | 5 | Recreation | |
| Baxters Pond Dam | Significant | Not assessed | 5 | Recreation | |
| Chestnut Hill Pond Dam | Significant | Poor | 5 | Recreation | |
| Ford Pond Dam | Significant | Satisfactory | 4 | Recreation | |
| West Fork Pond Dam | Significant | Poor | 4 | Recreation | 1940 |
| Green Acre Lane Pond Dam | Significant | Fair | 4 | Recreation | |
| Bethels Pond Dam | Significant | Fair | 3 | Recreation | 1937 |
| Street Pond Dam | Significant | Not assessed | 3 | Recreation | |
| Upper Mianus River Dam | Significant | Not assessed | 3 | Recreation | 1930 |
| West Parish Trib Pond Dam | Significant | Not assessed | 2 | Other | |
| Gravel Pit Pond Dam | Significant | Not assessed | 1 | Water Supply | |
| University Pond Dam | Significant | Not assessed | 1 | Recreation | |
| Converse Lake Dike | Significant | Not assessed | 0 | ||
| Brunswick School Dam | Significant | Not assessed | 0 | Other | |
| Shelton Canal Dike | Low | Satisfactory | 25 | Hydroelectric | 1870 |
| Brush Reservoir Dam | Low | Poor | 23 | Water Supply | 1925 |
| Haviland Millpond Dam | Low | Not assessed | 12 | Recreation | 1920 |