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 assessed | 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 assessed | 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 assessed | 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 assessed | 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 assessed | 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 assessed | 15 | Recreation | |
| Camp Cedarcrest Pond Dam | Significant | Not assessed | 15 | Recreation | |
| North Pond Dam | Significant | Fair | 14 | Recreation | 1967 |
| Miry Pond Dam #2 | Significant | Not assessed | 14 | Recreation | |
| Gravel Pit Pond Dam | Significant | Poor | 14 | Recreation | |
| Kettletown Brook Pond Dam | Significant | Not assessed | 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 assessed | 13 | Other | |
| Sochrin Pond Dam | Significant | Satisfactory | 13 | Recreation | |
| City Hall Pond Dam | Significant | Not assessed | 13 | Recreation | |
| Baldwin Dudley Pond Dam | Significant | Not assessed | 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 assessed | 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 assessed | 12 | Recreation | |
| Carmel Pond Dam | Significant | Satisfactory | 12 | Recreation | 1956 |
| Duffield Dam | Significant | Fair | 12 | Recreation | 1880 |
| Great Brook Reservoir Dam | Significant | Not assessed | 12 | Recreation | 1925 |
| Bristol Myers Squibb Dam | Significant | Satisfactory | 12 | Other | |
| Rose Mill Pond Dam | Significant | Not assessed | 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 assessed | 10 | Recreation | |
| Goulds Pond Dam | Significant | Not assessed | 10 | Recreation | |
| Jeremy Brook Dam | Significant | Not assessed | 10 | Recreation | |
| Yaskot & Ahearn Spillway | Significant | Not assessed | 10 | Recreation | 1880 |
| Jepps Brook Pond | Significant | Not assessed | 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 assessed | 10 | Recreation | |
| Witch Hazel Mill Pond Dam | Significant | Poor | 10 | Recreation | |
| Abbotts Pond Dam | Significant | Not assessed | 9 | Recreation | |
| Kleeman Dam | Significant | Not assessed | 9 | Other | |
| Spring Lake Dam | Significant | Not assessed | 9 | Recreation | |
| Ridge Lower Detention Dam | Significant | Satisfactory | 9 | Other | |
| Wards Mill Pond Dam | Significant | Not assessed | 9 | Recreation | 1900 |
| Pritchard Pond Dam | Significant | Not assessed | 9 | Recreation | 1890 |
| West Pond Dam | Significant | Not assessed | 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 assessed | 8 | Recreation | |
| Stannard Pond Dam | Significant | Satisfactory | 8 | Recreation | |
| Carrington Pond Dam | Significant | Satisfactory | 8 | Recreation | 1920 |
| Clark Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Turners Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Paddock Road Pond | Significant | Fair | 8 | Recreation | |
| Dayton Pond Dam West Dayton Hill Road Dam | Significant | Not assessed | 8 | Recreation | |
| Pierce's Detention Dam | Significant | Fair | 8 | Flood Risk Reduction | |
| Silver Lake Dam | Significant | Fair | 7 | Recreation | |
| Hog Pond Dam | Significant | Not assessed | 7 | Recreation | |
| Larkin Pond Dam | Significant | Satisfactory | 7 | Recreation | |
| Twitchell Reservoir Dam | Significant | Fair | 7 | Water Supply | |
| Kellogg Pond Dam | Significant | Not assessed | 7 | Recreation | |
| Malleys Pond Dam | Significant | Satisfactory | 7 | Recreation | 1925 |
| Turtle Pond Dam #1 | Significant | Not assessed | 7 | Recreation | |
| Ashe Pond Dam | Significant | Fair | 7 | Recreation | |
| Donovan Road Detention Basin Dam | Significant | Not assessed | 7 | Other | |
| Down Rd. Pond | Significant | Not assessed | 7 | Recreation | |
| Bishops Pond Dam | Significant | Poor | 7 | Recreation | 1955 |
| Mount Sanford Road Pond Dam | Significant | Not assessed | 7 | Recreation | |
| Papermill Pond Dam | Significant | Fair | 6 | Other | |
| Larsen's Pond Dam | Significant | Satisfactory | 6 | Recreation | |
| Goodman Upper Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Yuchnyk Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Hummer Pond | Significant | Not assessed | 6 | Recreation | |
| Snail Pond | Significant | Not assessed | 6 | Recreation | |
| Dunk Rock Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Frost Road Pond Dam | Significant | Not assessed | 6 | Other | |
| Union Ice Company Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Madison Lake Dam | Significant | Poor | 6 | Recreation | |
| Graniss Pond Dam | Significant | Not assessed | 6 | Recreation | 1900 |
| Lower Hillhouse Road Pond Dam | Significant | Not assessed | 6 | Recreation | |
| West River Flood Control Dam and Levee | Significant | Fair | 6 | 1987 | |
| Summit Pond Dam | Significant | Not assessed | 5 | Recreation | |
| Quonnipaug Lake Dam | Significant | Poor | 5 | Recreation | 1850 |
| Sunset Lake | Significant | Not assessed | 5 | Recreation | |
| Griffins Pond Dam | Significant | Not assessed | 5 | Recreation | |
| Lower Lake Phipps Dam | Significant | Not assessed | 5 | ||
| Ajello's Pond | Significant | Not assessed | 5 | Other | |
| Quirks Pond Dam | Significant | Not assessed | 5 | Recreation | |
| North Farms Reservoir Dam | Significant | Poor | 5 | Recreation | 1926 |
| Lily Pond Plains Road Dam | Significant | Not assessed | 5 | ||
| Lake Wequapauset Dam | Significant | Fair | 5 | Recreation | |
| Lower Detention Basin Dam | Significant | Satisfactory | 4 | ||
| Fenn Pond | Significant | Not assessed | 4 | Recreation | |
| Myer Huber Pond Dam | Significant | Not assessed | 4 | Recreation | |
| Todds Pond | Significant | Not assessed | 4 | Recreation | |
| Kwoka's Pond Dam | Significant | Not assessed | 4 | Other | |
| Nazelrod Pond Dam | Significant | Not assessed | 4 | Other | |
| Town Millpond Dam | Significant | Not assessed | 4 | Recreation | |
| Schildgen Pond Dam | Significant | Not assessed | 4 | Recreation | |
| Dream Lake Dam | Significant | Not assessed | 4 | Recreation | |
| Eisenhower Park Pond Dam | Significant | Not assessed | 4 | Recreation | |
| Keiser Dam | Significant | Not assessed | 3 | Recreation | |
| Picketts Pond Dam | Significant | Fair | 3 | Recreation | 1963 |
| Murphy Lake Dam | Significant | Not assessed | 3 | Recreation | |
| Reilly Pond | Significant | Not assessed | 2 | Recreation | |
| Talmages Ice Pond Dam | Significant | Not assessed | 2 | Recreation | |
| Ridge Upper Det Pond | Significant | Not assessed | 0 | Other | |
| Kelsey Pond Dam | Low | Not assessed | 14 | Recreation |