SNOFLO



GREENWOOD LK AT AWOSTING NJ

RESERVOIR LEVELS
January 7, 2025
610 ft 41.16, -74.33


YEAR OVER YEAR

Created with Highcharts 8.0.0Seasonal Water Lake OrReservoir Water SurfaceElevation Above Navd1988, Ft (ft)1. Jan1. Feb1. Mar1. Apr1. May1. Jun1. Jul1. Aug1. Sep1. Oct1. Nov1. Dec051015

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Greenwood Lake Dam, located in West Milford Township, New Jersey, is a concrete gravity dam on the Wanaque River with a primary purpose of recreation. Completed in 1928, the dam stands at a height of 17 feet and stretches 270 feet in length, providing a storage capacity of 13,269 acre-feet and covering a surface area of 1,733 acres. The dam is owned and regulated by the state of New Jersey, specifically by the New Jersey Department of Environmental Protection (NJDEP), ensuring that it undergoes regular inspections and enforcement measures to maintain its fair condition.

Despite its fair condition, Greenwood Lake Dam has a high hazard potential, prompting a biennial inspection frequency to assess its safety and functionality. The dam's emergency action plan (EAP) was last revised in July 2018, with no recent updates on its compliance with guidelines or the preparation of inundation maps. While there are no outlet gates or associated structures linked to the dam, its proximity to residential areas and the risk of inundation highlights the importance of ongoing risk management measures and a thorough assessment of potential hazards to ensure the safety of the surrounding communities and water resources.

Lake Or Reservoir Water Surface Elevation Above Navd 1988, Ft 24hr Change 0%
Percent of Normal 100%
Minimum 613.41 ft
2021-12-05
Maximum 620.19 ft
2023-12-19
Average 618 ft
Dam_Height 17
Drainage_Area 27.1
Year_Completed 1928
Nid_Storage 13269
Primary_Dam_Type Concrete
Surface_Area 1733
Hazard_Potential High
River_Or_Stream Wanaque River
Dam_Length 270
Nid_Height 17
Reservoir Levels
Created with Highcharts 8.0.0Gage height, ftJul '24Aug '24Sep '24Oct '24Nov '24Dec '24Jan '2502.557.51012.5
Created with Highcharts 8.0.0Lake or reservoir water surface elevationabove NAVD 1988, ftJul '24Aug '24Sep '24Oct '24Nov '24Dec '24Jan '250200400600800
       

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