Raritan River Below Calco Dam At Bound Brook flow report
As of July 13, 2026, Raritan River Below Calco Dam At Bound Brook is flowing at 287 cfs with a gage height of 17.01 ft, receding 43% over the past 24 hours. Source: USGS gauge #01403060, refreshed throughout the day.
Historical Data
Raritan River Below Calco Dam At Bound Brook at a glance
How Raritan River Below Calco Dam At Bound Brook is running right now, where it sits on the map, and the key gauge stats.
Raritan River Below Calco Dam At Bound Brook is flowing at 287 cfs, with the water sitting 17.01 ft at the gage. Flow is down 43% since yesterday as the gauge recedes.
This is USGS gauge #01403060 in New Jersey. Over the past 10 days the average has been 1,011 cfs, peaking at 3,820 cfs.
Over the next 5 days, Raritan River Below Calco Dam At Bound Brook Nj is expected to recede from today's 287 cfs, toward roughly 228 cfs by 2026-07-18 (likely range 73-708 cfs) -- running well below the seasonal normal.
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.
Raritan River Below Calco Dam At Bound Brook
The river is fed by several smaller tributaries and is regulated by the Calco Dam. Seasonal trends in flow are influenced by precipitation and snowmelt. Interestingly, the Raritan River has been the site of various historical events, such as the Battle of Bound Brook during the American Revolutionary War. Additionally, the river has faced environmental challenges such as pollution from industrial activity and flooding from severe weather events. Overall, the Raritan River and its hydrology provide a fascinating case study of the intersection between human activity and natural systems.
Nearby streamflow levels
Cross-check Raritan River Below Calco Dam At Bound Brook's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Raritan River Below Calco Dam At Bound Brook Nj | 287 cfs |
| Raritan River At Manville Nj | 269 cfs |
| Bound Bk At Middlesex Nj | 80 cfs |
| West Branch Middle Brook Near Martinsville Nj | 0 cfs |
| Millstone River At Blackwells Mills Nj | 201 cfs |
| North Branch Raritan River Near Raritan Nj | 141 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Raritan River Below Calco Dam At Bound 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 |
|---|---|
| Mendham 1.5 W | 0 in |
| Flemington 5 Nnw | 0 in |
| Clinton Twp 3.9 N | 0 in |
| Califon 0.6 Nw | 0 in |
| Highstown 2w | 0 in |
| Randolph Twp 2.0 E | 0 in |
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 Raritan River Below Calco Dam At Bound Brook in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Raritan River Below Calco Dam At Bound Brook crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Raritan River Below Calco Dam At Bound Brook
Where does the streamflow data for Raritan River Below Calco Dam At Bound Brook come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01403060. 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 Raritan River Below Calco Dam At Bound 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 Raritan River Below Calco Dam At Bound Brook report
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