Rahway River river
Total streamflow across the Rahway River was last observed at 29 cfs, and is expected to yield approximately 57 acre-ft of water today; about 34% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 84 cfs, with recent peaks last observed on 2021-09-02 when daily discharge volume was observed at 6,130 cfs.
Maximum discharge along the river is currently at the Rahway River At Rahway Nj reporting a streamflow rate of 17.9 cfs. This is also the highest stage along the Rahway River, with a gauge stage of 1.49 ft at this location. This river is monitored from 2 different streamgauging stations along the Rahway River, the highest being situated at an altitude of 67 ft, the Rahway River Near Springfield Nj.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Rahway River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Rahway River
All 2 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.
| Streamgauge▾ | Streamflow (cfs)▾ | Gauge stage (ft)▾ | 24h Δ (%)▾ | % Normal▾ | Min (cfs)▾ | Max (cfs)▾ | Elevation (ft)▾ |
|---|---|---|---|---|---|---|---|
|
Rahway River Near Springfield Nj
NJ
USGS 01394500
|
11 | 1.32 | -5.7 | 58% | 4 | 6,130 | 67 |
|
Rahway River At Rahway Nj
NJ
USGS 01395000
|
18 | 1.49 | -9.6 | 58% | 4 | 3,250 | 15 |
Maximum streamflow discharge by year
The single highest aggregate discharge recorded each year. Spotting the multi-year trend reveals droughts vs. wet cycles long before the headline daily flow does.
Annual peak discharge
From the river's full record · one point per water year
Streamflow elevation profile
Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.
Elevation vs streamflow
One point per monitored gauge · bubble size = gauge stage
Rahway River
The Rahway River is a 24-mile-long river in New Jersey that flows through Union, Essex, and Middlesex counties. It has a rich history, having been used for transportation and industry during the colonial and early industrial periods. The river's hydrology has been altered by human activity, including the construction of dams and reservoirs for water supply and flood control. One notable dam is the Lenape Park Dam in Cranford, which creates a popular recreational lake. The river also supports agriculture, with farms located along its banks. In recent years, efforts have been made to improve water quality and restore habitat for wildlife. Recreational activities on the river include fishing, boating, and hiking along its banks.
Recreation along the Rahway River
Fishing access and paddle runs Snoflo tracks within the watershed.
Track the Rahway River in the Snoflo app
Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.
About the Rahway River
Where does the data for the Rahway River come from?
Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.
How is "percent of normal" calculated?
Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).
Why are some gauges showing very different flows?
Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.
What's the elevation profile chart showing?
Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.
Can I get alerts when a specific gauge crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.