North Branch Raritan River Near Far Hills flow report
As of July 13, 2026, North Branch Raritan River Near Far Hills is flowing at 14 cfs with a gage height of 2.16 ft, receding 33% over the past 24 hours. Source: USGS gauge #01398500, refreshed throughout the day.
Historical Data
North Branch Raritan River Near Far Hills at a glance
How North Branch Raritan River Near Far Hills is running right now, where it sits on the map, and the key gauge stats.
North Branch Raritan River Near Far Hills is flowing at 14 cfs, with the water sitting 2.16 ft at the gage. Flow is down 33% since yesterday as the gauge recedes.
This is USGS gauge #01398500 in New Jersey. Over the past 10 days the average has been 14 cfs, peaking at 23 cfs.
Over the next 5 days, North Branch Raritan River Near Far Hills Nj is expected to recede from today's 21 cfs, toward roughly 17 cfs by 2026-07-17 (likely range 8-36 cfs) -- drier than normal for the date.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the New Jersey flow report.
Streamflow Forecast
Powered by PULSE — Snoflo’s Predictive Unified Learning & Simulation Engine, which learns from how this river has answered every past storm, snowmelt, and dry spell to forecast where it’s headed with a precision generic models can’t match.
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.
North Branch Raritan River Near Far Hills
This river is fed by precipitation and groundwater, and its flow is affected by droughts and storms. The North Branch Raritan River has several tributaries, including the Lamington River and the Black River, which contribute to its water supply. There are also several dams along the river, including the Burnt Mills Dam and the Far Hills Dam, that can affect its flow. The North Branch Raritan River experiences seasonal trends with higher flows in the spring and lower flows in the summer and fall. Interestingly, the river has been designated as a Wild and Scenic River by the National Park Service, recognizing its unique beauty and importance to the local ecosystem.
Nearby streamflow levels
Cross-check North Branch Raritan River Near Far Hills's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| North Branch Raritan River Near Far Hills Nj | 14 cfs |
| Lamington (Black) River Near Pottersville Nj | 19 cfs |
| Passaic River Near Millington Nj | 22 cfs |
| West Branch Middle Brook Near Martinsville Nj | 0 cfs |
| Sb Raritan River At Four Bridges Nj | 16 cfs |
| Sb Rockaway Creek At Whitehouse Station Nj | 51 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near North Branch Raritan River Near Far Hills. 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 |
|---|---|
| Mendham 1.5 W | 0 in |
| Randolph Twp 2.0 E | 0 in |
| Califon 0.6 Nw | 0 in |
| Clinton Twp 3.9 N | 0 in |
| Mount Arlington 0.8 S | 0 in |
| Mount Olive Twp 1.6 Nnw | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of North Branch Raritan River Near Far Hills.
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 North Branch Raritan River Near Far Hills in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when North Branch Raritan River Near Far Hills crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About North Branch Raritan River Near Far Hills
Where does the streamflow data for North Branch Raritan River Near Far Hills come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01398500. 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 North Branch Raritan River Near Far Hills 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.
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