Dams in Grafton County, New Hampshire
82Total Dams
26High Hazard
25Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Comerford | High | Satisfactory | 170 | Hydroelectric | 1930 |
| Moore | High | Satisfactory | 149 | Hydroelectric | 1957 |
| Baker River Site 2 Dam | High | Fair | 68 | Flood Risk Reduction | 1965 |
| Baker River Site 6a Dam | High | Poor | 68 | Flood Risk Reduction | 1975 |
| Baker River Site 8 Dam | High | Satisfactory | 63 | Flood Risk Reduction | 1967 |
| Wilder | High | Satisfactory | 59 | Hydroelectric | 1950 |
| Baker River Site 5 Dam | High | Poor | 53 | Flood Risk Reduction | 1967 |
| Oliverian Dam | High | Satisfactory | 52 | Flood Risk Reduction | 1962 |
| Campton Pond Hydro Dam | High | Fair | 39 | Hydroelectric | 1890 |
| Lower Reservoir Dam | High | Fair | 33 | Water Supply | 1893 |
| Goose Pond Dam | High | Poor | 31 | Recreation | 1918 |
| Upper Reservoir Dam | High | Fair | 30 | Water Supply | 1924 |
| Hanover Center Reservoir Dam | High | Satisfactory | 30 | Water Supply | 1962 |
| Baker River Site 11 Dam | High | Poor | 24 | Flood Risk Reduction | 1971 |
| Baker River Site 11a Dam | High | Satisfactory | 24 | Flood Risk Reduction | 1971 |
| Rivermill Mascoma Hydro Dam | High | Poor | 22 | Hydroelectric | 1920 |
| Dells Pond Outlet Dam | High | Poor | 20 | Recreation | 1935 |
| Mascoma Lake Dam | High | Poor | 18 | Recreation | 1881 |
| Corcoran Pond Dam | High | Satisfactory | 17 | Recreation | 1976 |
| Squam Lake | High | Satisfactory | 17 | Hydroelectric | 1856 |
| Grist Mill Pond Dam | High | Poor | 16 | Hydroelectric | 1924 |
| Pemigewasset River Levee | High | Satisfactory | 15 | Flood Risk Reduction | 1960 |
| Newfound Lake Dam | High | Poor | 12 | Recreation | 1840 |
| Smith Pond Dam | High | Fair | 12 | Recreation | 1830 |
| George Pond Dam | High | Fair | 11 | Recreation | 1911 |
| Spectacle Pond Dam | High | Satisfactory | 7 | Recreation | 1915 |
| Ayers Island | Significant | Satisfactory | 80 | Hydroelectric | 1924 |
| Storrs Pond Dam | Significant | Satisfactory | 34 | Recreation | 1934 |
| Lower Mountain Lake Dam | Significant | Satisfactory | 33 | Recreation | 1967 |
| Tyler Tree Farm Dam | Significant | Fair | 25 | Fish and Wildlife Pond | 1969 |
| Boston Lot Lake Dam | Significant | Satisfactory | 25 | Recreation | 1936 |
| Apthorp | Significant | Satisfactory | 24 | Hydroelectric | 1936 |
| Harris Brook Reservoir Dam | Significant | Poor | 22 | Recreation | 1903 |
| Crystal Lake Dam | Significant | Satisfactory | 22 | Recreation | 1910 |
| Waterville Valley Lagoons Dam | Significant | Satisfactory | 19 | Other | 1972 |
| Lincoln Sewage Lagoon Dam | Significant | Satisfactory | 19 | Other | 1975 |
| Glen Road | Significant | Satisfactory | 17 | Hydroelectric | 1988 |
| Lower Ipc Dam | Significant | Fair | 16 | Recreation | 1930 |
| Lebanon Water Treatment Intake Dam | Significant | Satisfactory | 16 | Water Supply | 1934 |
| Ashland Sewage Lagoon Dam | Significant | Fair | 15 | Other | 1968 |
| Chandler Pond Dam | Significant | Fair | 14 | Recreation | 1939 |
| Weeks Crossing Pond Dam | Significant | Satisfactory | 14 | Recreation | |
| Baker River Site 6 Dam | Significant | Satisfactory | 14 | Flood Risk Reduction | 1969 |
| Canaan Sewage Lagoon Dam | Significant | Satisfactory | 13 | Other | 1991 |
| Bethlehem Sewage Lagoon Dam | Significant | Satisfactory | 13 | Other | 1985 |
| Lisbon Wastewater Lagoons Dam | Significant | Satisfactory | 13 | Other | |
| Woodsville | Significant | Satisfactory | 12 | Hydroelectric | 1827 |
| Long Pond Dam | Significant | Not Rated | 12 | Fish and Wildlife Pond | 1933 |
| Baker Brook Pond Dam | Significant | Poor | 11 | Recreation | 1928 |
| Armington Lake Dam | Significant | Satisfactory | 9 | Recreation | 1900 |
| Dartmouth Skiway Sewage Lagoon Dam | Significant | Satisfactory | 4 | Other | 1967 |
| Locke 2 Dam | Low | Satisfactory | 60 | Recreation | 1969 |
| Upper Mountain Lake Dam | Low | Fair | 31 | Recreation | 1963 |
| Bethlehem Dam | Low | Not Rated | 29 | Recreation | 1926 |
| Montcalm Golf Club Dam | Low | Fair | 27 | Recreation | 1984 |
| Locke 1 Dam | Low | Poor | 27 | Recreation | 1970 |
| Fenn Dam | Low | Unsatisfactory | 25 | Recreation | 1984 |
| Mcindoes | Low | Satisfactory | 25 | Hydroelectric | 1931 |
| Baltic Mills Dam | Low | Not Rated | 21 | Hydroelectric | 1919 |
| Grafton Pond Dam | Low | Fair | 21 | Recreation | 1918 |
| Baker River Site 5 Dike | Low | Satisfactory | 20 | Flood Risk Reduction | 1969 |
| Lower Lisbon | Low | Satisfactory | 18 | Hydroelectric | 1986 |
| Dodge Falls | Low | Satisfactory | 18 | Hydroelectric | 1905 |
| Ammonoosuc River | Low | Satisfactory | 17 | Hydroelectric | 1900 |
| Lcs Settling Ponds 4 And 5 Dam | Low | Not Rated | 15 | Other | 1980 |
| Beaver Pond | Low | Not Rated | 14 | Fish and Wildlife Pond | 1927 |
| Canaan Street Lake Dam | Low | Not Rated | 14 | Recreation | 1917 |
| Dodge Pond Dam | Low | Satisfactory | 13 | Recreation | 1936 |
| Hermit Hill Farm Pond Dam | Low | Satisfactory | 13 | Fish and Wildlife Pond | 1975 |
| Kilton Pond Dam | Low | Fair | 12 | Recreation | 1930 |
| Mirror Lake Dam | Low | Satisfactory | 12 | Recreation | 1836 |
| Reservoir Pond Dam | Low | Poor | 11 | Recreation | 1900 |
| Pearl Lake Dam | Low | Poor | 10 | Recreation | 1930 |
| Cummins Pond Dam | Low | Satisfactory | 10 | Recreation | 1880 |
| Coffin Pond Dam | Low | Poor | 10 | Recreation | 1960 |
| Campton Bog Pond Dam | Low | Fair | 10 | Recreation | 1836 |
| Stinson Lake Dam | Low | Satisfactory | 8 | Recreation | 1780 |
| White Oak Pond Dam | Low | Fair | 8 | Recreation | 1920 |
| Lake Tarleton Dam | Low | Satisfactory | 8 | Recreation | 1800 |
| Echo Lake Dam | Low | Satisfactory | 7 | Recreation | 1990 |
| Ferson Pond Dam | Low | Poor | 7 | Recreation | 1998 |
| Loon Pond Dam | Low | Satisfactory | 7 | Recreation | 1970 |