Dams in Fairfield County, Connecticut
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 Rated | 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 Rated | 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 Rated | 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 Rated | 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 Rated | 15 | Fish and Wildlife Pond | 1875 |
| Topping Road Dam | Significant | Poor | 15 | Recreation | 1920 |
| Indian Spring Pond Dam | Significant | Not Rated | 15 | Recreation | 1925 |
| Angulus Pond Dam | Significant | Not Rated | 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 Rated | 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 Rated | 13 | Recreation | |
| Highstead Pond Dam | Significant | Fair | 13 | Other | 1985 |
| Carringtons Pond Dam | Significant | Satisfactory | 13 | Recreation | |
| Hasen Pond Dam | Significant | Not Rated | 12 | Recreation | |
| Eutro Pond Dam | Significant | Satisfactory | 12 | Other | |
| Pepper Lake Dam | Significant | Not Rated | 12 | Recreation | |
| Schatten Pond Dam | Significant | Not Rated | 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 Rated | 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 Rated | 12 | Recreation | |
| Lees Pond #1 Dam | Significant | Not Rated | 12 | Recreation | |
| Serenity Pond Dam | Significant | Fair | 12 | Recreation | 1928 |
| Hattertown Pond Dam | Significant | Satisfactory | 11 | Recreation | 1840 |
| Cross Pond Dam | Significant | Not Rated | 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 Rated | 11 | Recreation | |
| Warner Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Steichens Pond Dam | Significant | Not Rated | 10 | Recreation | 1880 |
| Wataba Lake Dam | Significant | Fair | 10 | Recreation | 1900 |
| Newmanco Dam | Significant | Not Rated | 10 | Other | |
| Valley Pond Dam | Significant | Not Rated | 10 | Recreation | |
| Frye Lake Dam | Significant | Satisfactory | 10 | Recreation | 1930 |
| Alden Pond Dam | Significant | Not Rated | 10 | Recreation | |
| Blanchard Pond Dam | Significant | Not Rated | 10 | Water Supply | |
| Thayers Pond Dam | Significant | Not Rated | 10 | Recreation | 1920 |
| Valley Lake Dam | Significant | Not Rated | 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 Rated | 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 Rated | 10 | Recreation | |
| Sherwood Mill Pond Dam | Significant | Not Rated | 10 | Recreation | 1900 |
| Green Pond Dam | Significant | Satisfactory | 10 | Recreation | 1900 |
| Greenley Pond Dam | Significant | Not Rated | 9 | Recreation | |
| Dublin Hill Dam | Significant | Not Rated | 9 | Recreation | |
| Taylors Pond Dam | Significant | Poor | 9 | Recreation | |
| Ehrsam Pond Dam | Significant | Not Rated | 9 | Recreation | |
| Blind Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Myers Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| East Pond Dam Greenwich Creek | Significant | Not Rated | 9 | Recreation | |
| Blackhouse Road Pond Dam | Significant | Poor | 9 | Recreation | |
| Dingle Brook Lane Dam | Significant | Not Rated | 8 | Recreation | |
| Field Dam | Significant | Not Rated | 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 Rated | 8 | Recreation | |
| Putnam Memorial Park Pond Dam | Significant | Poor | 8 | Fish and Wildlife Pond | |
| Newtown Pond Dam | Significant | Not Rated | 8 | Recreation | |
| Rowayton Pond Dam | Significant | Poor | 8 | Recreation | |
| Gould Manor Park Dam | Significant | Not Rated | 8 | Recreation | |
| Cos Cob Pond Dam | Significant | Fair | 8 | Recreation | |
| Ferndale Pond Dam | Significant | Not Rated | 8 | Recreation | |
| Wilshire Pond Dam | Significant | Fair | 8 | Recreation | 1920 |
| Merten's Mill Pond Dam | Significant | Not Rated | 8 | Recreation | |
| Leroy Pond Dam | Significant | Not Rated | 7 | Recreation | |
| Kovac's Pond Dam | Significant | Satisfactory | 7 | Recreation | |
| Dingletown Road Dam | Significant | Not Rated | 7 | Recreation | |
| Spring Lake Dam | Significant | Fair | 7 | Recreation | 1900 |
| Lake Wackawana Dam And Dike | Significant | Not Rated | 7 | Other | |
| Plymouth Avenue Pond Dam | Significant | Poor | 7 | Recreation | |
| Holts Ice Pond Dam | Significant | Not Rated | 7 | Recreation | |
| Mamanasco Lake Dam | Significant | Fair | 6 | Recreation | 1870 |
| Ballwall Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Siscowit Reservoir Dam | Significant | Fair | 6 | Water Supply | 1865 |
| Coat Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Westport Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Betts Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Hickok Pond Dam | Significant | Satisfactory | 6 | Recreation | |
| Ridge Pond Dam | Significant | Fair | 6 | Recreation | |
| Two Acre Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Cooper Pond Dam | Significant | Not Rated | 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 Rated | 5 | Recreation | |
| Baxters Pond Dam | Significant | Not Rated | 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 Rated | 3 | Recreation | |
| Upper Mianus River Dam | Significant | Not Rated | 3 | Recreation | 1930 |
| West Parish Trib Pond Dam | Significant | Not Rated | 2 | Other | |
| Gravel Pit Pond Dam | Significant | Not Rated | 1 | Water Supply | |
| University Pond Dam | Significant | Not Rated | 1 | Recreation | |
| Converse Lake Dike | Significant | 0 | |||
| Brunswick School Dam | Significant | Not Rated | 0 | Other | |
| Shelton Canal Dike | Low | Satisfactory | 25 | Hydroelectric | 1870 |
| Brush Reservoir Dam | Low | Poor | 23 | Water Supply | 1925 |
| Haviland Millpond Dam | Low | Not Rated | 12 | Recreation | 1920 |