Wanaque River River Levels

Last Updated: December 4, 2025

The Wanaque River is a 16-mile-long tributary of the Passaic River in northern New Jersey, USA.


Summary

Total streamflow across the Wanaque River was last observed at 32 cfs, and is expected to yield approximately 63 acre-ft of water today; about 30% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 105 cfs, with recent peaks last observed on 2011-09-09 when daily discharge volume was observed at 3,790 cfs.

Maximum discharge along the river is currently at the Wanaque R At Wanaque Nj reporting a streamflow rate of 26.5 cfs. However, the streamgauge with the highest stage along the river is the Wanaque River At Awosting Nj with a gauge stage of 1.61 ft. This river is monitored from 2 different streamgauging stations along the Wanaque River, the highest being situated at an altitude of 603 ft, the Wanaque River At Awosting Nj.

River Details

Last Updated 2025-12-04
Discharge Volume 63 ACRE-FT
Streamflow 31.73 cfs
-14.1 cfs (-30.77%)
Percent of Normal 30.2%
Maximum 3,790.0 cfs
2011-09-09
Seasonal Avg 105 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Wanaque River At Awosting Nj
USGS 01383500
5 cfs 1.61 ft 0
Wanaque R At Wanaque Nj
USGS 01387000
27 cfs 1.49 ft -34.73
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Wanaque River (Native American for "place of the sassafras") is a tributary of the Pequannock River in Passaic County in northern New Jersey in the United States.Once known as the Long Pond River, the source of the Wanaque River is Greenwood Lake, once known as Long Pond (not to be confused with the nearby village of Greenwood Lake in the state of New York).Both Greenwood Lake and the surrounding Sterling Forest watershed straddle the border of the states of New Jersey and New York.Downstream, the construction of dams at Monks and Wanaque created the Monksville and Wanaque reservoirs, respectively.From the Raymond Dam of the Wanaque Reservoir, the river flows to its confluence with the Pequannock River.