The Whippany River is a 17.7-mile-long river located in Morris County, New Jersey.
Summary
Total streamflow across the
Whippany River
was last observed at
87
cfs, and is expected to yield approximately
173
acre-ft of water today; about 52%
of normal.
River levels are low and may signify a drought.
Average streamflow for this time of year is
167 cfs,
with recent peaks last observed
on
2021-09-02 when daily discharge volume was observed at
3,410 cfs.
Maximum discharge along the river is currently at the
Whippany River Near Pine Brook Nj
reporting a streamflow rate of 53.1 cfs.
This is also the highest stage along the Whippany River, with a gauge stage of
2.72 ft at this location.
This river is monitored from 3 different streamgauging stations along the Whippany River, the highest being situated at an altitude of 314 ft, the
Whippany River Near Morristown Nj.
River Details
| Last Updated | 2025-11-17 |
| Discharge Volume | 173 ACRE-FT |
| Streamflow |
87.2 cfs
-5.0 cfs (-5.42%) |
| Percent of Normal | 52.18% |
| Maximum |
3,410.0 cfs
2021-09-02 |
| Seasonal Avg | 167 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Whippany River Near Morristown Nj
USGS 01381400 |
11 cfs | 2.32 ft | -11.29 | |||||
|
Whippany River At Morristown Nj
USGS 01381500 |
23 cfs | 1.98 ft | -15.69 | |||||
|
Whippany River Near Pine Brook Nj
USGS 01381800 |
53 cfs | 2.72 ft | 1.34 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Whippany River is a tributary of the Rockaway River, approximately 20 mi (30 km) long, in northern New Jersey in the United States.
It rises in Morris County, in Mendham Township west of Morristown, and flows generally ENE in a meandering course, through Morristown and the
Whippany area of Hanover. It flows through the Troy Meadows and joins the Rockaway in the Hatfield Swamp in eastern Morris County, just above the confluence of the Rockaway with the Passaic River.
The river drainage area is 69 square miles (180 km2).
There are three USGS water gauges on the river. The gauge in Parsippany just before the Whippany River empties into the Rockaway River has an average flow of 178 cubic feet (5 m3) per second.
The river derives its name from the Whippanong Native Americans, a tribe that once inhabited the area. Whippanong meant "place of the willows", named for the trees growing along the banks of the river.