Lake Tappan Dam
| Dam Name | Lake Tappan Dam |
| River | Hackensack River |
| Administration City | New Jersey |
| Country | United States |
| Year | 1966 |
| Dam Height | 10 |
| Dam Length | 180 |
| Area(Sqkm) | 3.6 |
| Area(Polygonal) | 3.6 |
| Capital Expenditure | 13.1 |
| Depth(M) | 3.6 |
| Avg Displacement Of Water | 1712 |
| Catchment Area In Sqkm | 132 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | -73.997083 |
| Latitude | 41.024583 |
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