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| Monksville Reservoir | |
|---|---|
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  Monksville Reservoir  Monksville Reservoir | |
| Location | Ringwood / Ringwood & West Milford, NJ, Passaic County, New Jersey |
| Coordinates | 41°07′20″N 74°17′59″W / 41.122217°N 74.299829°W |
| Type | Reservoir |
| Basin countries | United States |
| Max. length | 3 mi (4.8 km) |
| Surface area | 505 acres (2.04 km2) |
| Max. depth | 90 ft (27 m) |
| Water volume | 7 billion US gallons (26,000,000 m3) |
| Surface elevation | 400 ft (120 m) |
The Monksville Reservoir is an artificial lake created in 1987 by damming on the Wanaque River in Ringwood, New Jersey. It is named after the former community of Monksville, which was relocated and flooded upon its completion.