Dams in New London County, Connecticut
130Total Dams
18High Hazard
91Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Deep River Reservoir Dam | High | Satisfactory | 62 | Water Supply | 1926 |
| Taftville Hydro Dam #4 | High | Satisfactory | 41 | Hydroelectric | 1867 |
| Mystic Reservoir Dam | High | Satisfactory | 34 | Water Supply | 1880 |
| Fairview Reservoir Dam And Dikes | High | Satisfactory | 30 | Water Supply | 1868 |
| Hanover Reservoir Dam | High | Fair | 27 | Recreation | 1900 |
| Glasgo Pond Dam | High | Satisfactory | 26 | Recreation | 1860 |
| Oxoboxo Lake Dam | High | Satisfactory | 26 | Recreation | 1810 |
| Ashland Pond Dam | High | Satisfactory | 25 | Recreation | 1800 |
| Fitchville Pond Dam | High | Poor | 20 | Recreation | 1871 |
| Poquonnock Reservoir Dam | High | Satisfactory | 18 | Water Supply | 1901 |
| Pachaug Pond Dam | High | Fair | 17 | Fish and Wildlife Pond | 1888 |
| Spaulding Pond Dike | High | Satisfactory | 16 | Other | 1965 |
| Skating Pond Dam | High | Satisfactory | 16 | Flood Risk Reduction | 1968 |
| Deans Reservoir Dam | High | Fair | 15 | Water Supply | 1888 |
| Silvia's Lower Pond Dam | High | Poor | 14 | Fish and Wildlife Pond | |
| Pataguanset Lake Dam | High | Fair | 12 | Recreation | 1942 |
| Sawmill Pond Dam | High | Satisfactory | 12 | Recreation | 1870 |
| Silvia's Upper Pond Dam | High | Fair | 12 | Recreation | 1870 |
| Morgan Pond Dam | Significant | Satisfactory | 45 | Water Supply | 1966 |
| Stony Brook Reservoir Dam | Significant | Fair | 40 | Water Supply | 1912 |
| Stone Hill Reservoir Dam | Significant | Satisfactory | 35 | Water Supply | 1894 |
| Congdon Pond Dam | Significant | Poor | 35 | Hydroelectric | 1900 |
| Trading Cove Pond Dam | Significant | Fair | 32 | Recreation | 1900 |
| Green Falls Reservoir Dam | Significant | Satisfactory | 32 | Recreation | 1870 |
| Tunnel Dam Hydro Station | Significant | Satisfactory | 32 | Hydroelectric | 1906 |
| City Pond Dam | Significant | Poor | 31 | Recreation | |
| Taftville Reservoir #2 Dam | Significant | Poor | 30 | Water Supply | 1910 |
| Taftville Reservoir #1 Dam | Significant | Fair | 30 | Recreation | 1880 |
| Baltic Reservoir Dam (west) | Significant | Satisfactory | 30 | Water Supply | 1900 |
| Paper Mill Pond Dam | Significant | Poor | 28 | Water Supply | 1870 |
| Williams Pond Dam | Significant | Satisfactory | 26 | Recreation | 1865 |
| Powers Lake Dam | Significant | Poor | 25 | Recreation | 1870 |
| Tadma Pond Dam | Significant | Poor | 22 | Recreation | 1966 |
| Gager's Pond Dam | Significant | Poor | 22 | Recreation | 1876 |
| Dodson Pond Dam | Significant | Fair | 22 | Recreation | 1962 |
| Bogue Brook Reservoir Dam | Significant | Satisfactory | 21 | Water Supply | 1920 |
| Wheeler Pond Dam | Significant | Fair | 20 | Other | 1810 |
| Stiles Pond Dam | Significant | Not Rated | 20 | Recreation | 1870 |
| Miller Pond Dam | Significant | Satisfactory | 20 | Recreation | 1873 |
| Billings Avery Dam | Significant | Satisfactory | 19 | Water Supply | 1968 |
| Gay Cemetery Pond Dam | Significant | Poor | 19 | Recreation | 1920 |
| Norwich State Hospital Pond Dam | Significant | Satisfactory | 19 | Recreation | |
| Hopeville Pond Dam | Significant | Satisfactory | 18 | Recreation | 1910 |
| Savin Lake Dam | Significant | Fair | 18 | Recreation | 1920 |
| Rubber Pond Dam | Significant | Not Rated | 18 | Recreation | |
| Red Mill Pond Dam | Significant | Satisfactory | 18 | Other | |
| Lithuanian Scout Association Pond Dam | Significant | Satisfactory | 18 | Recreation | |
| Fairy Lake Dike | Significant | Fair | 17 | Water Supply | 1957 |
| Bog Meadow Reservoir Dam | Significant | Poor | 17 | Recreation | 1893 |
| Poheganut Reservoir Dam | Significant | Satisfactory | 16 | Water Supply | 1952 |
| Whippoorwill Pond Dam | Significant | Satisfactory | 16 | Recreation | |
| Crossing At Lisbon Detention Dam | Significant | Satisfactory | 16 | Flood Risk Reduction | 2008 |
| Wyassup Lake Dam | Significant | Satisfactory | 15 | Recreation | 1920 |
| Lake Of Isles Dam | Significant | Fair | 15 | Recreation | 1920 |
| Brandagee Lake Dam | Significant | Fair | 15 | Recreation | 1897 |
| Versailles Pond Dam | Significant | Fair | 14 | Water Supply | 1920 |
| Lower Blissville Pond Dam | Significant | Satisfactory | 14 | Recreation | 1860 |
| Moulsons Pond Dam | Significant | Not Rated | 14 | Recreation | 1840 |
| Lower Millpond Dam | Significant | Satisfactory | 14 | Recreation | |
| Brewster Pond Dam | Significant | Poor | 13 | Recreation | 1854 |
| Hallville Pond Dam | Significant | Fair | 13 | Recreation | 1920 |
| Brodie Pond Dam | Significant | Not Rated | 13 | Recreation | |
| Watersedge Pond Dam | Significant | Fair | 13 | Recreation | 1966 |
| Smith Pond Dam | Significant | Not Rated | 13 | Recreation | |
| Beach Pond Dam | Significant | Satisfactory | 12 | Recreation | 1885 |
| Upper Pond Dam | Significant | Satisfactory | 12 | Recreation | 1860 |
| Spencer Pond Dam | Significant | Poor | 12 | Recreation | 1900 |
| Billings Lake Dam | Significant | Satisfactory | 12 | Recreation | 1900 |
| Bush Pond Dam | Significant | Fair | 12 | Recreation | |
| Graves Dam | Significant | Satisfactory | 11 | Recreation | |
| Gallup Pond Dam | Significant | Fair | 11 | Other | 1910 |
| Clark Falls Dam | Significant | Fair | 11 | Other | |
| Upper Millpond Dam | Significant | Satisfactory | 11 | Recreation | 1820 |
| Gardner Lake Dam | Significant | Satisfactory | 10 | Recreation | 1900 |
| Barnes Reservoir Dike | Significant | Poor | 10 | Water Supply | 1902 |
| Ledyard Reservoir South Dam | Significant | Satisfactory | 10 | Water Supply | |
| Schofield Pond Dam | Significant | Not Rated | 10 | Recreation | 1920 |
| Blue Lake Dam | Significant | Satisfactory | 10 | Recreation | 1900 |
| E.a. Whiteford Dam | Significant | Satisfactory | 10 | Recreation | 1964 |
| Rockland Pond Dam | Significant | Satisfactory | 10 | Water Supply | 1900 |
| Falls Mill Upper Dam | Significant | Not Rated | 10 | Recreation | 1910 |
| Great Meadow Brook Pond Dam | Significant | Fair | 10 | Recreation | |
| Beachdale Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Beckwith Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Shunock River Dam | Significant | Not Rated | 9 | Other | |
| Red Cedar Lake Dam | Significant | Fair | 9 | Recreation | 1900 |
| Baltic Reservoir Dam (east) | Significant | Poor | 9 | Water Supply | |
| Mitchell Pond Dam | Significant | Not Rated | 9 | Recreation | |
| Lantern Hill Pond Dam | Significant | Satisfactory | 9 | Recreation | |
| Gorton Pond Dam | Significant | Fair | 8 | Recreation | 1860 |
| Babcock Pond Dam #1 | Significant | Satisfactory | 8 | Recreation | 1880 |
| Wickaboxet Marsh Dam | Significant | Satisfactory | 8 | Recreation | 1962 |
| Darrow Pond Dam | Significant | Fair | 8 | Recreation | 1880 |
| Lake Konomoc Dike | Significant | Satisfactory | 8 | Water Supply | 1969 |
| Dolbeare Dam | Significant | Not Rated | 7 | Other | |
| Beaver Brook Pond | Significant | Fair | 7 | Recreation | |
| Rogers Lake Dam | Significant | Satisfactory | 7 | Recreation | 1822 |
| Spaulding Pond Dam | Significant | Fair | 7 | Recreation | 1900 |
| Yellow Mill Dam | Significant | Not Rated | 6 | Other | |
| Oakdale Pond Dam | Significant | Not Rated | 6 | Water Supply | |
| Lincoln Lake | Significant | Not Rated | 6 | Recreation | 1900 |
| Long Pond Dam | Significant | Fair | 6 | Recreation | 1880 |
| Border Pond Dam | Significant | Satisfactory | 6 | Other | |
| Cradnall Property Dam | Significant | Not Rated | 5 | Recreation | |
| Liepold Pond Dam | Significant | Not Rated | 5 | Recreation | |
| Mohegan Brook Dam | Significant | Satisfactory | 5 | Recreation | |
| Perry Pond Dam | Significant | Not Rated | 5 | Recreation | |
| Douglas Pond Dam | Significant | Not Rated | 4 | Recreation | |
| Pitcher Mountain Pond Dam | Significant | Not Rated | 4 | Other | |
| Tantaquidgeon | Low | Satisfactory | 30 | Recreation | |
| Pine Meadows Park Pond Pond Dam | Low | Not Rated | 22 | Recreation | 1959 |
| Wyre - Wynd | Low | Satisfactory | 21 | Hydroelectric | 1913 |
| Drabik Pond Dam | Low | Not Rated | 15 | Irrigation | |
| Greenville | Low | Satisfactory | 15 | Hydroelectric | 1888 |
| Occum | Low | Satisfactory | 14 | Hydroelectric | 1900 |
| Witch Meadow Pond Dam | Low | Not Rated | 13 | Recreation | 1965 |
| Blissville Pond Dam | Low | Not Rated | 11 | Recreation | 1930 |
| Mcgrath Dam | Low | Not Rated | 10 | Recreation | 1900 |
| Macdonald Swamp Pond | Low | Not Rated | 10 | Other | |
| Hell Hollow Pond Dam | Low | Fair | 10 | Fish and Wildlife Pond | |
| Day Pond(colchester) | Low | Not Rated | 10 | Recreation | 1936 |
| Poquonock Lake Dam | Low | Not Rated | 10 | Water Supply | |
| Lake Nova | Low | Not Rated | 8 | Recreation | 1930 |
| Mill Pond Dam | Low | Poor | 8 | Water Supply | |
| Still Waters Pond Dam | Low | Not Rated | 8 | Other | |
| Beaver Brook Dam | Low | Not Rated | 8 | Fish and Wildlife Pond | 1968 |
| Whitford Pond Dam | Low | Poor | 7 | Recreation | |
| Lake Cuheca Dam | Low | Not Rated | 7 | Recreation | 1900 |
| Ymca Pond Dam | Low | Not Rated | 7 | Recreation | 1920 |
| Jordan Mill Pond Dam | Low | Not Rated | 7 | Recreation | 1900 |