106Total Dams
16High Hazard
87Significant
Dam Safety in Tolland County, Connecticut
Tolland County has 106 dams tracked in the National Inventory of Dams. Of these, 16 are classified as high hazard — meaning failure would probably cause loss of human life. Another 87 carry a significant hazard classification. Currently, 14 dams have a condition assessment of poor or unsatisfactory.
The average dam in Tolland County is 105 years old. The most common purpose is recreation. The tallest dam is Mansfield Hollow Dam - Dike C at 78 ft.
Explore more: Oldest dams in Connecticut · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Mansfield Hollow Dam - Dike C | High | Not assessed | 78 | Flood Risk Reduction | 1952 |
| Whitney Flood Control Site #1 Dam | High | Satisfactory | 52 | Flood Risk Reduction | 1962 |
| Ellis Flood Control Site #2 Dam | High | Satisfactory | 38 | Flood Risk Reduction | 1960 |
| Hockanum Reservoir Dam | High | Fair | 37 | Recreation | 1890 |
| Pomeroy Flood Control Site #3 Dam | High | Fair | 36 | Flood Risk Reduction | 1960 |
| Staffordville Reservoir Dam | High | Satisfactory | 30 | Recreation | 1850 |
| Ellithorpe Flood Control Site #5 Dam | High | Fair | 29 | Flood Risk Reduction | 1968 |
| Shenipsit Flood Control Site #6 Dam | High | Satisfactory | 29 | Flood Risk Reduction | 1961 |
| Columbia Lake Dam | High | Satisfactory | 28 | Recreation | 1865 |
| Shenipsit Lake Dam | High | Satisfactory | 27 | Water Supply | 1903 |
| Warren Pond Dam | High | Poor | 22 | Recreation | 1852 |
| Riverside Pond Dam | High | Poor | 21 | Water Supply | 1880 |
| Eagleville Dam | High | Fair | 18 | Recreation | 1860 |
| Mirror Lake Dam | High | Poor | 12 | Recreation | |
| Roman Pond Dam | High | Fair | 12 | Other | |
| Paper Mill Pond Dam | High | Satisfactory | 0 | Recreation | 1900 |
| Bradway Reservoir Site #4 Dam | Significant | Satisfactory | 29 | Flood Risk Reduction | 1961 |
| Stafford Reservoir #2 Dam | Significant | Satisfactory | 28 | Water Supply | 1966 |
| Risley Reservoir Dam (no Longer Using 14605) | Significant | Fair | 28 | Water Supply | 1853 |
| Dobsonville Pond Dam | Significant | Fair | 26 | Recreation | 1900 |
| Halchek Pond Dam | Significant | Fair | 26 | Recreation | 1972 |
| Aldon Mill Pond Dam | Significant | Satisfactory | 25 | Recreation | 1920 |
| Mansfield Recreation Pond | Significant | Satisfactory | 25 | Recreation | 1974 |
| Drobney Dam | Significant | Satisfactory | 24 | Recreation | 1970 |
| Somersville Pond Dam | Significant | Satisfactory | 22 | Recreation | 1890 |
| Halls Pond Dam | Significant | Fair | 22 | Recreation | 1920 |
| Bigelow Pond Dam | Significant | Satisfactory | 21 | Recreation | 1941 |
| Lake Mark Dam | Significant | Fair | 21 | Recreation | 1957 |
| Lower Bolton Lake Dam | Significant | Satisfactory | 20 | Recreation | 1940 |
| Middle Bolton Lake Dam | Significant | Satisfactory | 20 | Recreation | 1940 |
| Rhode Island Pond Dam | Significant | Satisfactory | 20 | Recreation | 1880 |
| Glenville Pond Dam | Significant | Fair | 19 | Recreation | 1842 |
| Andover Lake Dam | Significant | Satisfactory | 18 | Recreation | 1926 |
| Foote Hill Farm Dam | Significant | Fair | 18 | Irrigation | 1973 |
| Tankerhoosen Lake North Dam | Significant | Poor | 16 | Recreation | 1830 |
| Sweetheart Lake Dam | Significant | Satisfactory | 16 | Recreation | 1927 |
| Sperry Pond Dam | Significant | Fair | 15 | Recreation | |
| Hurds Lake Dam | Significant | Poor | 15 | Recreation | 1934 |
| Sun Valley Lake Dam | Significant | Not assessed | 15 | Recreation | 1964 |
| New City Pond Dam | Significant | Poor | 15 | Recreation | 1900 |
| Cyril Johnson Mill Dam | Significant | Not assessed | 15 | Water Supply | |
| Bone Mill Pond Dam | Significant | Fair | 15 | Other | |
| Upper Wasilewski Pond Dam | Significant | Not assessed | 14 | Recreation | |
| Hydeville Pond Dam | Significant | Not assessed | 14 | Recreation | 1900 |
| Dennis Pond Dam | Significant | Fair | 14 | Recreation | 1880 |
| Springs Pond Dam | Significant | Not assessed | 14 | Recreation | 1900 |
| Stanley Gladysz Dam | Significant | Satisfactory | 13 | Recreation | 1967 |
| Ahlberg Pond Dam | Significant | Poor | 13 | Other | |
| Mono Pond Dam | Significant | Satisfactory | 13 | Other | 1990 |
| Parizek Pond Dam #1 | Significant | Fair | 13 | Recreation | 1870 |
| New Pond Dam | Significant | Fair | 13 | Recreation | 1900 |
| Shady Lake Dam | Significant | Poor | 12 | Recreation | |
| Fedex Detention Basin Dam | Significant | Satisfactory | 12 | Flood Risk Reduction | |
| Mansfield Training Dam #2 | Significant | Fair | 12 | Recreation | 1968 |
| Jones Pond Dam | Significant | Fair | 11 | Recreation | |
| Wells Pond Dam | Significant | Poor | 11 | Recreation | 1920 |
| Mclaughlin Pond East Dam | Significant | Poor | 11 | Recreation | 1860 |
| Crystal Lake Dam | Significant | Not assessed | 11 | Recreation | 1900 |
| Stafford Reservoir #3 Dam | Significant | Poor | 11 | Water Supply | 1930 |
| Decew South Coventry Pond Dam | Significant | Not assessed | 11 | Recreation | 1900 |
| Name Plate Pond Dam | Significant | Satisfactory | 11 | Recreation | |
| Farras Pond Dam | Significant | Not assessed | 10 | Recreation | |
| Cook Pond Dam | Significant | Not assessed | 10 | Recreation | |
| Bradway Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Tinker Pond Dam | Significant | Satisfactory | 10 | Recreation | 1900 |
| Walkers Reservior Dam | Significant | Poor | 10 | Recreation | 1900 |
| Amston Lake Dam | Significant | Satisfactory | 10 | Recreation | 1910 |
| Nipmuck Pond Dam | Significant | Satisfactory | 10 | Other | 1960 |
| Gay City Pond Dam | Significant | Satisfactory | 10 | Recreation | |
| Cider Mill Pond Dam | Significant | Not assessed | 10 | Recreation | |
| Pearl Lake Dam | Significant | Not assessed | 10 | Other | |
| Mansfield Training Dam #1 | Significant | Fair | 10 | Recreation | 1960 |
| Holman Pond Dam | Significant | Not assessed | 9 | Other | |
| Bishop Swamp Dam | Significant | Satisfactory | 9 | Recreation | |
| Cigar Pond Dam | Significant | Not assessed | 9 | Recreation | |
| Holbrook Pond Dam | Significant | Satisfactory | 9 | Recreation | 1920 |
| Lake Bonair Dam | Significant | Not assessed | 9 | Recreation | 1900 |
| Mashapaug Pond Dam #3 North | Significant | Satisfactory | 9 | Recreation | 1900 |
| Hanks Hill Pond Dam | Significant | Fair | 9 | Recreation | |
| Metcalf Brook Dam | Significant | Not assessed | 8 | Recreation | |
| Wasilewski Pond Dam | Significant | Not assessed | 8 | Recreation | |
| Notch Pond Dam | Significant | Fair | 8 | Recreation | |
| Fuller Pond Dam | Significant | Not assessed | 8 | Fish and Wildlife Pond | |
| Woods Pond Dam | Significant | Poor | 8 | Recreation | |
| Orcutts Pond Dam | Significant | Not assessed | 8 | Recreation | 1850 |
| Hansens Pond Dam | Significant | Satisfactory | 8 | Recreation | 1935 |
| Larners Pond Dam | Significant | Not assessed | 8 | ||
| Stafford Reservoir #4 Dam | Significant | Poor | 8 | Water Supply | 1928 |
| Foote Saw Mill Pond Dam | Significant | Not assessed | 8 | Other | |
| Brown Pond Dam | Significant | Not assessed | 7 | Other | |
| Stateline Pond Dam | Significant | Not assessed | 7 | Recreation | 1900 |
| Upper Bolton Lake Causeway Dam | Significant | Satisfactory | 7 | Recreation | |
| Bissonette Pond Dam | Significant | Satisfactory | 6 | Recreation | 1930 |
| Ostrager Pond Dam | Significant | Not assessed | 6 | Recreation | |
| Foster Pond Dam | Significant | Not assessed | 5 | Other | |
| Mclaughlin Pond South Dam | Significant | Not assessed | 5 | ||
| Varga Pond | Significant | Not assessed | 4 | Irrigation | |
| Worthington Pond Dam | Significant | Not assessed | 4 | Recreation | |
| Lower Pelican Road Pond Dam | Significant | Not assessed | 4 | Recreation | |
| Smith Pond Dam | Significant | Not assessed | 3 | Irrigation | |
| Jones Street Pond Dam | Significant | Not assessed | 3 | Recreation | 1973 |
| Gasek Farms Detention Basin | Significant | Not assessed | 0 | 2002 | |
| Fagan Dam | Significant | Not assessed | 0 | Fish and Wildlife Pond | |
| Sessions Meadow Marsh Dam | Low | Not assessed | 11 | Fish and Wildlife Pond | 1956 |
| Pinneys Pond Dam | Low | Not assessed | 10 | Recreation | 1880 |
| Goodhall Dam | Low | Not assessed | 10 | Recreation | 1976 |