River Report

Black River river

23 streamgauges 30% of normal Last updated 2026-05-22

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Aggregate flow

21,766cfs

% of normal

30%

Daily volume

43,172AF

Seasonal avg

72,764cfs

Total streamflow across the Black River was last observed at 21,766 cfs, and is expected to yield approximately 43,172 acre-ft of water today; about 30% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 72,764 cfs, with recent peaks last observed on 2011-05-04 when daily discharge volume was observed at 476,781 cfs.

Maximum discharge along the river is currently at the Black River At Elgin Ferry reporting a streamflow rate of 4,140 cfs. However, the streamgauge with the highest stage along the river is the Black River Ds St Hwy 54 @ Black River Falls with a gauge stage of 37.06 ft. This river is monitored from 23 different streamgauging stations along the Black River, the highest being situated at an altitude of 5,759 ft, the Black River Blw Pumping Plant.

Max discharge

Black River At Elgin Ferry

4,140cfs

Highest stage

Black River Ds St Hwy 54 @ Black River Falls

37.06ft

Highest-elevation gauge

Black River Blw Pumping Plant

5,759ft

Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Black River. Use the range buttons to zoom in on a specific period.

Total streamflow

Sum of all monitored streamgauges · daily

Premium feature

Decades of basin-wide flow context for the Black River.

See exactly how the Black River is performing — which gauges are stressed right now, and how this season ranks against every year on record.

Longitudinal river profile — gauges from headwaters to mouth, colored by % of normal
Flow percentile bands — this season vs. the historical envelope across every year on record

Unlock historical context 7-day free trial · cancel anytime

Longitudinal profile

Where on the river is flow stressed right now?

Every monitored gauge along the Black River ordered headwaters → mouth (by elevation), with bars colored by current percent of normal. Red reaches are below normal; blue reaches are above. Spot drought-stressed sections at a glance.

Gauges from headwaters to mouth

Bar = current % of normal · ordered top-to-bottom by elevation

Flow percentile bands

How does this season compare to normal?

The shaded ribbon shows the 10th-90th percentile of aggregate river discharge across every year on record — the "normal range." The bold line is the current year. Above the dark band means above-normal flow; below means drier-than-normal.

Aggregate flow percentile envelope

10th · 25th · 50th · 75th · 90th percentile across all historical years

Per-gauge breakdown

Every streamgauge along the Black River

All 23 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)▾
Black River Blw Pumping Plant AZ USGS 09489500	23	2.75	0.0	42%	1	17,900	5,759
Black River Near Fort Apache AZ USGS 09490500	28	1.44	-2.1	39%	13	54,700	4,315
Black River Above Malaga NM USGS 08405500	14	1.09	2.2	178%	0	74,600	3,086
Black River Near Bessemer MI USGS 04031000	98	2.39	-11.2	21%	10	14,800	1,186
Black River At Neillsville WI USGS 05381000	469	4.15	-30.2	39%	17	48,800	985
Black River Near Boonville Ny NY USGS 04252500	399	4.41	-43.4	56%	75	12,800	939
Black River Ds St Hwy 54 @ Black River Falls WI USGS 053813595	1,150	37.06	-21.8	40%	75	56,700	738
Black River At Coventry VT USGS 04296000	152	2.58	-14.6	62%	17	6,480	727
Black River Near Jeddo MI USGS 04159492	105	3.39	-6.3	50%	5	14,400	664
Black River Near Galesville WI USGS 05382000	1,850	5.16	-15.5	53%	370	66,900	659
Black River Near Garnet MI USGS 04046000	28	2.94	-5.7	83%	5	860	655
Black River At Elyria Oh OH USGS 04200500	498	3.02	115.6	123%	4	51,700	634
Black River Near Annapolis MO USGS 07061500	311	4.15	1.3	38%	77	109,000	579
Black River At North Springfield VT USGS 01153000	156	2.41	-12.4	54%	13	15,500	458
Black River At Leeper MO USGS 07062500	358	2.31	-37.1	17%	178	125,000	432
Black River At Watertown Ny NY USGS 04260500	2,580	3.81	-8.8	63%	555	55,500	384
Black River At Poplar Bluff MO USGS 07063000	753	0.97	0.5	26%	178	100,000	328
Black River Near Corning AR USGS 07064000	651	2.16	3.2	18%	242	48,600	279
Black River At Pocahontas AR USGS 07069000	2,670	2.33	-0.4	24%	1,190	105,000	265
Black River At Black Rock AR USGS 07072500	3,820	2.79	0.0	23%	2,090	190,000	230
Black River At Elgin Ferry AR USGS 07074420	4,140	7.17	-1.2	22%	2,040	222,000	211
Black River At Kingstree SC USGS 02136000	32	1.73	-5.3	9%	4	83,700	49
Black River Near Tomahawk NC USGS 02106500	28	1.41	-3.5	5%	7	54,800	45

Annual peaks

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

Profile

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

About this river

Black River

The Black River is a river in the northeastern United States that flows through the states of New York and Pennsylvania. It is approximately 125 miles long and has a drainage area of 1,230 square miles. The river is known for its hydroelectric power generation, with several dams and reservoirs built along its length, including the Neversink Reservoir and the Pepacton Reservoir. These reservoirs provide drinking water to New York City and the surrounding areas. The Black River also has recreational uses, with fishing, kayaking, and canoeing opportunities, and the river's valley is home to a variety of wildlife. The river has played an important role in the history of the region, having been used for transportation, logging, and agriculture.

Track the Black 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.

 Get the app

FAQ

About the Black River

Where does the data for the Black 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.