Delaware River river
Total streamflow across the Delaware River was last observed at 41,106 cfs, and is expected to yield approximately 81,533 acre-ft of water today; about 90% of normal. Average streamflow for this time of year is 45,772 cfs, with recent peaks last observed on 2011-09-09 when daily discharge volume was observed at 713,528 cfs.
Maximum discharge along the river is currently at the Delaware River At Trenton Nj reporting a streamflow rate of 10,200 cfs. However, the streamgauge with the highest stage along the river is the Delaware R Bl Perry Dam with a gauge stage of 31.42 ft. This river is monitored from 10 different streamgauging stations along the Delaware River, the highest being situated at an altitude of 2,906 ft, the Delaware River Nr Red Bluff.
River streamflow levels
Daily aggregate streamflow across every monitored gauge along the Delaware River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Delaware River
All 10 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)▾ |
|---|---|---|---|---|---|---|---|
|
Delaware River Nr Red Bluff
NM
USGS 08408500
|
49 | 2.89 | · | 1266% | 0 | 81,400 | 2,906 |
|
Delaware R Nr Muscotah
KS
USGS 06890100
|
156 | 3.59 | -40.7 | 100% | 0 | 23,800 | 924 |
|
Delaware R Bl Perry Dam
KS
USGS 06890900
|
1,790 | 31.42 | 1.1 | 1529% | 5 | 11,100 | 901 |
|
Delaware River At Lordville Ny
PA
USGS 01427207
|
2,370 | 7.27 | -4.1 | 100% | 255 | 54,800 | 841 |
|
Delaware River At Callicoon Ny
PA
USGS 01427510
|
2,930 | 4.00 | 16.3 | 109% | 412 | 64,800 | 737 |
|
Delaware R Above Lackawaxen R Nr Barryville Ny
NY
USGS 01428500
|
3,380 | 4.43 | 29.0 | 122% | 552 | 70,200 | 602 |
|
Delaware River At Port Jervis Ny
PA
USGS 01434000
|
5,660 | 4.13 | 62.2 | 129% | 908 | 94,700 | 418 |
|
Delaware River At Montague Nj
NJ
USGS 01438500
|
6,490 | 6.91 | 67.3 | 129% | 954 | 110,000 | 374 |
|
Delaware River At Belvidere Nj
NJ
USGS 01446500
|
8,130 | 5.69 | 59.1 | 111% | 1,310 | 146,000 | 232 |
|
Delaware River At Trenton Nj
NJ
USGS 01463500
|
10,200 | 9.68 | 48.3 | 89% | 2,250 | 173,000 | 7 |
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
Delaware River
The Delaware River is a major river on the east coast of the United States, spanning approximately 330 miles from its source in the Catskill Mountains of New York to its mouth at the Delaware Bay. The river has played a significant role in American history, serving as a boundary during colonial times and as a major shipping route during the industrial revolution. The Delaware River has a complex hydrology system with many tributaries and large reservoirs, including the Pepacton, Cannonsville, and Neversink reservoirs in New York, and the Blue Marsh Lake in Pennsylvania. These reservoirs provide drinking water for millions of people in the region. The river is also used for recreational activities such as fishing, boating, and hiking, and supports agricultural activities in the surrounding areas.
Track the Delaware 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 Delaware River
Where does the data for the Delaware 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.