Dams in New Haven County, Connecticut
198Total Dams
48High Hazard
149Significant
Dam Safety in New Haven County, Connecticut
New Haven County has 198 dams tracked in the National Inventory of Dams. Of these, 48 are classified as high hazard — meaning failure would probably cause loss of human life. Another 149 carry a significant hazard classification. Currently, 18 dams have a condition assessment of poor or unsatisfactory.
The average dam in New Haven County is 115 years old. The most common purpose is recreation. The tallest dam is Shepaug at 138 ft.
Explore more: Oldest dams in Connecticut · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Shepaug | High | Satisfactory | 138 | Hydroelectric | 1955 |
| Lake Gaillard Dam | High | Satisfactory | 118 | Water Supply | 1929 |
| Lake Watrous Dam | High | Satisfactory | 116 | Water Supply | 1915 |
| Lake Chamberlain Dam | High | Satisfactory | 93 | Water Supply | 1890 |
| Long Hill Reservoir Dam | High | Satisfactory | 80 | Water Supply | 1914 |
| Lake Glen Dam | High | Satisfactory | 72 | Water Supply | 1907 |
| Mulberry Reservoir Dam | High | Satisfactory | 66 | Water Supply | 1897 |
| Lake Bethany Dam | High | Satisfactory | 66 | Water Supply | 1892 |
| Hammonasset Dam | High | Satisfactory | 63 | Water Supply | 1956 |
| Menunkatuck Reservoir Dam | High | Satisfactory | 61 | Water Supply | 1929 |
| Lake Dawson Dam | High | Satisfactory | 60 | Water Supply | 1890 |
| Moody Reservoir Dam | High | Satisfactory | 56 | Water Supply | 1900 |
| Lake Whitney Dam | High | Poor | 44 | Water Supply | 1861 |
| Great Hill Reservior Dam | High | Poor | 41 | Recreation | 1909 |
| Peat Swamp Reservoir Dam | High | Poor | 41 | Water Supply | 1925 |
| Broad Brook Reservoir Dam | High | Fair | 40 | Water Supply | 1913 |
| Belleview Lake Dam | High | Satisfactory | 38 | Recreation | 1899 |
| Chestnut Hill Reservoir Dam | High | Fair | 37 | Recreation | 1919 |
| Maltby No. 1 Dam | High | Satisfactory | 37 | Water Supply | 1862 |
| East Mountain Reservoir Dam | High | Satisfactory | 35 | Recreation | 1880 |
| Lake Saltonstall Dam | High | Satisfactory | 34 | Water Supply | 1882 |
| Hop Brook Dam - Saddle Dike | High | Not Available | 33 | Flood Risk Reduction | 1968 |
| Scoville Reservoir Dam | High | Satisfactory | 32 | Recreation | 1917 |
| Lake Wintergreen Dam | High | Satisfactory | 31 | Water Supply | 1863 |
| Mad River Dam Homestead Avenue Dam | High | Poor | 31 | Water Supply | 1900 |
| Mackenzie Reservoir Dam | High | Fair | 29 | Water Supply | 1944 |
| Farm Brook Flood Control Site #2a Dam | High | Satisfactory | 29 | Flood Risk Reduction | |
| Swan Lake Dam | High | Fair | 28 | Irrigation | 1920 |
| Farm Brook Pond Site 2b | High | Satisfactory | 28 | Fish and Wildlife Pond | |
| Merimere Reservoir Dike (dam Is 705) | High | Fair | 27 | Water Supply | 1870 |
| Black Pond Dam | High | Fair | 26 | Recreation | 1880 |
| Hanover Pond | High | Satisfactory | 25 | Hydroelectric | 2006 |
| Conrad Pond Dam | High | Satisfactory | 22 | Recreation | |
| Waterbury Reservoir No. 2 Dam | High | Satisfactory | 22 | Recreation | 1880 |
| Cheshire Reservoir Dam | High | Satisfactory | 21 | Water Supply | 1908 |
| Thurston Pond Dam | High | Satisfactory | 20 | Recreation | 1890 |
| Quillinan Reservoir Dam | High | Fair | 19 | Recreation | 1880 |
| Lower Ansonia Reservoir Dam | High | Satisfactory | 18 | Water Supply | 1887 |
| Ulbrich Reservoir Dam | High | Satisfactory | 17 | Water Supply | 1966 |
| Bradley Hubbard Reservoir Dam | High | Fair | 15 | Recreation | 1891 |
| Fountain Lake Dam | High | Fair | 15 | Recreation | 1888 |
| Lower Scoville Reservoir Dam | High | Fair | 15 | Recreation | 1917 |
| Mixville Pond Dam | High | Satisfactory | 14 | Recreation | 1870 |
| Upper Ansonia Reservoir East Dike | High | Fair | 12 | Recreation | |
| Lake Phipps Dam #3 | High | Satisfactory | 12 | Recreation | 1920 |
| Farm Brook Flood Control Site #1 Dam | High | Satisfactory | 11 | Flood Risk Reduction | 1974 |
| Pistapaug Reservoir Dam | High | Satisfactory | 9 | Water Supply | 1941 |
| Hitchcock Lake Central Ave Dam | High | Satisfactory | 8 | Recreation | 1868 |
| Maltby #2 Dam | Significant | Satisfactory | 45 | Water Supply | 1862 |
| Seymour Reservoir #3 Dam | Significant | Fair | 42 | Water Supply | 1910 |
| Southington Reservoir #2 Dam | Significant | Satisfactory | 38 | Water Supply | 1900 |
| Middle Reservoir Dam | Significant | Satisfactory | 35 | Water Supply | 1890 |
| Seymour Reservoir #2 Dam | Significant | Fair | 31 | Water Supply | 1948 |
| Clarks Pond Dam | Significant | Satisfactory | 30 | Recreation | |
| Maltby Lake West Dam #3 | Significant | Satisfactory | 29 | Water Supply | 1862 |
| Seymour Reservoir #4 Dam | Significant | Poor | 28 | Water Supply | 1951 |
| Risdon Pond Dam | Significant | Unsatisfactory | 27 | Water Supply | 1890 |
| Seymour Reservoir #1 Dam | Significant | Fair | 26 | Water Supply | 1898 |
| Straitsville Reservoir Dam | Significant | Fair | 25 | Water Supply | 1900 |
| Baldwins Pond Dam | Significant | Satisfactory | 24 | Recreation | 1850 |
| West River Pond Dam | Significant | Fair | 24 | Recreation | |
| Quassapaug Lake Dam | Significant | Fair | 24 | Recreation | 1900 |
| Candee Reservoir Dam | Significant | Satisfactory | 24 | Water Supply | |
| Upper Detention Basin Dam | Significant | Satisfactory | 21 | ||
| Kinneytown | Significant | Poor | 21 | Hydroelectric | 1913 |
| Bristol Fish & Game Club Dam | Significant | Satisfactory | 20 | Recreation | 1961 |
| Mirror Lake Dam | Significant | Satisfactory | 20 | Recreation | 1949 |
| Ravenswood Dam | Significant | Satisfactory | 20 | Fish and Wildlife Pond | |
| Hoadley Pond Dam | Significant | Satisfactory | 19 | Water Supply | 1873 |
| Hatchery Pond Dam | Significant | Fair | 19 | Other | |
| Jepps Pond Dam | Significant | Satisfactory | 18 | Recreation | |
| Rimmon Dam | Significant | Not Rated | 18 | Recreation | 1900 |
| Maupus Pond Dam | Significant | Poor | 18 | Recreation | 1920 |
| Wepawaug Reservoir Dam | Significant | Satisfactory | 18 | Water Supply | 1911 |
| Bristol Babcock Reservoir #1 Dam | Significant | Not Rated | 18 | Water Supply | |
| Great Hill Road Pond Dam | Significant | Satisfactory | 18 | Recreation | |
| Towantic Pond Dam | Significant | Poor | 18 | Recreation | 1870 |
| Beaver Brook Dam | Significant | Not Rated | 17 | Recreation | 1897 |
| High Hill Pond Dam | Significant | Satisfactory | 17 | Recreation | 1968 |
| Cedar Lake Dam | Significant | Satisfactory | 17 | Recreation | 1869 |
| Lane Pond Dam | Significant | Satisfactory | 16 | Water Supply | 1918 |
| Butterworth Lake Dam | Significant | Fair | 15 | Recreation | 1961 |
| Northrop Pond Dam | Significant | Not Rated | 15 | Recreation | |
| Branford Supply Ponds Dam | Significant | Fair | 15 | Recreation | 1911 |
| Kettletown Detention Dam | Significant | Satisfactory | 15 | Flood Risk Reduction | |
| May Street Pond South Dam | Significant | Not Rated | 15 | Recreation | |
| Camp Cedarcrest Pond Dam | Significant | Not Rated | 15 | Recreation | |
| North Pond Dam | Significant | Fair | 14 | Recreation | 1967 |
| Miry Pond Dam #2 | Significant | Not Rated | 14 | Recreation | |
| Gravel Pit Pond Dam | Significant | Poor | 14 | Recreation | |
| Kettletown Brook Pond Dam | Significant | Not Rated | 14 | Other | |
| May Street Pond North Dam | Significant | Satisfactory | 14 | Recreation | |
| Little Tracys Pond Dam | Significant | Fair | 14 | Water Supply | |
| Middle Hillhouse Road Pond Dam | Significant | Fair | 14 | Recreation | |
| Stoddard Dam | Significant | Fair | 13 | Recreation | |
| Bishops Pond Dam | Significant | Satisfactory | 13 | Recreation | 1900 |
| West Brook Diversion Dam | Significant | Satisfactory | 13 | Other | |
| Borrelli Farm Pond Dam | Significant | Not Rated | 13 | Other | |
| Sochrin Pond Dam | Significant | Satisfactory | 13 | Recreation | |
| City Hall Pond Dam | Significant | Not Rated | 13 | Recreation | |
| Baldwin Dudley Pond Dam | Significant | Not Rated | 12 | Other | |
| Round Hill Pond Dam | Significant | Fair | 12 | Recreation | 1961 |
| Bladens River Dam | Significant | Poor | 12 | Water Supply | 1906 |
| Wire Company Dam #2 | Significant | Not Rated | 12 | Recreation | 1900 |
| Farm River (northford) Diversion | Significant | Satisfactory | 12 | Water Supply | |
| Lake Elise Dam | Significant | Fair | 12 | Recreation | 1900 |
| Beaver Pond Dam | Significant | Poor | 12 | Recreation | 1893 |
| Upper Guilford Lakes Dam | Significant | Fair | 12 | Recreation | 1929 |
| Guilford Sportsman Association Dam | Significant | Not Rated | 12 | Recreation | |
| Carmel Pond Dam | Significant | Satisfactory | 12 | Recreation | 1956 |
| Duffield Dam | Significant | Fair | 12 | Recreation | 1880 |
| Great Brook Reservoir Dam | Significant | Not Rated | 12 | Recreation | 1925 |
| Bristol Myers Squibb Dam | Significant | Satisfactory | 12 | Other | |
| Rose Mill Pond Dam | Significant | Not Rated | 12 | Recreation | |
| Long Meadow Pond Dam | Significant | Satisfactory | 12 | Water Supply | |
| Moss Farm Dam | Significant | Fair | 11 | Recreation | 1920 |
| Pages Millpond Dam | Significant | Satisfactory | 11 | Recreation | 1880 |
| Hurley Road Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Youngs Pond Dam | Significant | Not Rated | 10 | Recreation | |
| Goulds Pond Dam | Significant | Not Rated | 10 | Recreation | |
| Jeremy Brook Dam | Significant | Not Rated | 10 | Recreation | |
| Yaskot & Ahearn Spillway | Significant | Not Rated | 10 | Recreation | 1880 |
| Jepps Brook Pond | Significant | Not Rated | 10 | Recreation | |
| Nichols Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Clarks Pond Dam | Significant | Fair | 10 | Recreation | |
| Indian Lake Dam | Significant | Fair | 10 | Recreation | 1900 |
| Mondo Pond #4 Dam | Significant | Not Rated | 10 | Recreation | |
| Witch Hazel Mill Pond Dam | Significant | Poor | 10 | Recreation | |
| Abbotts Pond Dam | Significant | Not Rated | 9 | Recreation | |
| Kleeman Dam | Significant | Not Rated | 9 | Other | |
| Spring Lake Dam | Significant | Not Rated | 9 | Recreation | |
| Ridge Lower Detention Dam | Significant | Satisfactory | 9 | Other | |
| Wards Mill Pond Dam | Significant | Not Rated | 9 | Recreation | 1900 |
| Pritchard Pond Dam | Significant | Not Rated | 9 | Recreation | 1890 |
| West Pond Dam | Significant | Not Rated | 9 | Recreation | |
| Hidden Pond Park Dam | Significant | Satisfactory | 8 | ||
| Endres Pond Dam | Significant | Satisfactory | 8 | Recreation | |
| Pomperaug River Dam | Significant | Poor | 8 | Other | |
| Silver Brook Dam | Significant | Not Rated | 8 | Recreation | |
| Stannard Pond Dam | Significant | Satisfactory | 8 | Recreation | |
| Carrington Pond Dam | Significant | Satisfactory | 8 | Recreation | 1920 |
| Clark Pond Dam | Significant | Not Rated | 8 | Recreation | |
| Turners Pond Dam | Significant | Not Rated | 8 | Recreation | |
| Paddock Road Pond | Significant | Fair | 8 | Recreation | |
| Dayton Pond Dam West Dayton Hill Road Dam | Significant | Not Rated | 8 | Recreation | |
| Pierce's Detention Dam | Significant | Fair | 8 | Flood Risk Reduction | |
| Silver Lake Dam | Significant | Fair | 7 | Recreation | |
| Hog Pond Dam | Significant | Not Rated | 7 | Recreation | |
| Larkin Pond Dam | Significant | Satisfactory | 7 | Recreation | |
| Twitchell Reservoir Dam | Significant | Fair | 7 | Water Supply | |
| Kellogg Pond Dam | Significant | Not Rated | 7 | Recreation | |
| Malleys Pond Dam | Significant | Satisfactory | 7 | Recreation | 1925 |
| Turtle Pond Dam #1 | Significant | Not Rated | 7 | Recreation | |
| Ashe Pond Dam | Significant | Fair | 7 | Recreation | |
| Donovan Road Detention Basin Dam | Significant | Not Rated | 7 | Other | |
| Down Rd. Pond | Significant | Not Rated | 7 | Recreation | |
| Bishops Pond Dam | Significant | Poor | 7 | Recreation | 1955 |
| Mount Sanford Road Pond Dam | Significant | Not Rated | 7 | Recreation | |
| Papermill Pond Dam | Significant | Fair | 6 | Other | |
| Larsen's Pond Dam | Significant | Satisfactory | 6 | Recreation | |
| Goodman Upper Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Yuchnyk Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Hummer Pond | Significant | Not Rated | 6 | Recreation | |
| Snail Pond | Significant | Not Rated | 6 | Recreation | |
| Dunk Rock Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Frost Road Pond Dam | Significant | Not Rated | 6 | Other | |
| Union Ice Company Pond Dam | Significant | Not Rated | 6 | Recreation | |
| Madison Lake Dam | Significant | Poor | 6 | Recreation | |
| Graniss Pond Dam | Significant | Not Rated | 6 | Recreation | 1900 |
| Lower Hillhouse Road Pond Dam | Significant | Not Rated | 6 | Recreation | |
| West River Flood Control Dam And Levee | Significant | Fair | 6 | 1987 | |
| Summit Pond Dam | Significant | Not Rated | 5 | Recreation | |
| Quonnipaug Lake Dam | Significant | Poor | 5 | Recreation | 1850 |
| Sunset Lake | Significant | Not Rated | 5 | Recreation | |
| Griffins Pond Dam | Significant | Not Rated | 5 | Recreation | |
| Lower Lake Phipps Dam | Significant | Not Rated | 5 | ||
| Ajello's Pond | Significant | Not Rated | 5 | Other | |
| Quirks Pond Dam | Significant | Not Rated | 5 | Recreation | |
| North Farms Reservoir Dam | Significant | Poor | 5 | Recreation | 1926 |
| Lily Pond Plains Road Dam | Significant | Not Rated | 5 | ||
| Lake Wequapauset Dam | Significant | Fair | 5 | Recreation | |
| Lower Detention Basin Dam | Significant | Satisfactory | 4 | ||
| Fenn Pond | Significant | Not Rated | 4 | Recreation | |
| Myer Huber Pond Dam | Significant | Not Rated | 4 | Recreation | |
| Todds Pond | Significant | Not Rated | 4 | Recreation | |
| Kwoka's Pond Dam | Significant | Not Rated | 4 | Other | |
| Nazelrod Pond Dam | Significant | Not Rated | 4 | Other | |
| Town Millpond Dam | Significant | Not Rated | 4 | Recreation | |
| Schildgen Pond Dam | Significant | Not Rated | 4 | Recreation | |
| Dream Lake Dam | Significant | Not Rated | 4 | Recreation | |
| Eisenhower Park Pond Dam | Significant | Not Rated | 4 | Recreation | |
| Keiser Dam | Significant | Not Rated | 3 | Recreation | |
| Picketts Pond Dam | Significant | Fair | 3 | Recreation | 1963 |
| Murphy Lake Dam | Significant | Not Rated | 3 | Recreation | |
| Reilly Pond | Significant | Not Rated | 2 | Recreation | |
| Talmages Ice Pond Dam | Significant | Not Rated | 2 | Recreation | |
| Ridge Upper Det Pond | Significant | Not Rated | 0 | Other | |
| Kelsey Pond Dam | Low | Not Rated | 14 | Recreation |