Northfield Mountain Main Dam
| Dam Name | Northfield Mountain Main Dam |
| River | Northfield Mountain Reservoir |
| Administration City | Massachusetts |
| Country | United States |
| Year | 1972 |
| Dam Height | 43 |
| Dam Length | 3414 |
| Area(Sqkm) | 0.6 |
| Area(Polygonal) | 0.6 |
| Capital Expenditure | 21 |
| Depth(M) | 35 |
| Avg Displacement Of Water | 7 |
| Catchment Area In Sqkm | 1 |
| Main Usage | Hydroelectricity |
| Status | 3: Fair |
| Longitude | -72.440417 |
| Latitude | 42.61625 |
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