Whippany River Near Pine Brook flow report
As of July 16, 2026, Whippany River Near Pine Brook is flowing at 69 cfs with a gage height of 3.25 ft, rising 94% over the past 24 hours. Source: USGS gauge #01381800, refreshed throughout the day.
Historical Data
Whippany River Near Pine Brook at a glance
How Whippany River Near Pine Brook is running right now, where it sits on the map, and the key gauge stats.
Whippany River Near Pine Brook is flowing at 69 cfs, with the water sitting 3.25 ft at the gage. Flow is up 94% since yesterday — a rising hydrograph.
This is USGS gauge #01381800 in New Jersey. Over the past 10 days the average has been 71 cfs, peaking at 167 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the New Jersey flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #01381800).
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Whippany River Near Pine Brook Nj is expected to hold near today's 36 cfs, toward roughly 33 cfs by 2026-07-20 (likely range 15-71 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Whippany River Near Pine Brook
The river's main constituents are precipitation and groundwater. The Whippany River is fed by several tributaries, including the Black Brook, Loantaka Brook, and Indian Grave Brook. There are several dams along the river, including the Bee Meadow Dam and the Central Park Dam. Seasonal trends show that the river typically experiences higher flows during the spring and fall months due to increased precipitation. An interesting fact about the Whippany River is that it was once used for transportation and served as a major trading route for the Lenape Native Americans.
Nearby streamflow levels
Cross-check Whippany River Near Pine Brook's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Whippany River Near Pine Brook Nj | 69 cfs |
| Passaic River At Pine Brook Nj | 131 cfs |
| Rockaway River Below Reservoir At Boonton Nj | 11 cfs |
| Rockaway River Above Reservoir At Boonton Nj | 472 cfs |
| Whippany River At Morristown Nj | 29 cfs |
| Passaic River At Little Falls Nj | 229 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Whippany River Near Pine Brook. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Boonton 1 Se At Reservoir | 0 in |
| Little Falls Twp 0.5 Wnw | 0 in |
| Randolph Twp 2.0 E | 0 in |
| 0.2 Mi E Of Harrison P.O. Passaic Rvr | 0 in |
| Oakland 0.9 Sse | 0 in |
| Mendham 1.5 W | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Whippany River Near Pine Brook.
Nearby reservoirs
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River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Whippany River Near Pine Brook in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Whippany River Near Pine Brook crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Whippany River Near Pine Brook
Where does the streamflow data for Whippany River Near Pine Brook come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01381800. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Whippany River Near Pine Brook rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Whippany River Near Pine Brook report
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