The monitoring network within this area

Hydrionis holds 1,074 values from 3 gauges within it. Discharge is a property of a gauge and its reach, not of this drainage area, so this page reports the network and its records rather than a single figure.

Gauges

1,074

Values held

1833–2026

Record spans

Gauges within the Upper Susquehanna-Lackawanna huc8 subbasin

3 monitoring points, positioned as the publisher records them.

Flood peaks, as measured

This gauge's flood record, as measured. Unlike a daily mean it is the discharge at the moment the river was highest, which is the figure flood frequency analysis is built on.

Largest measured flow of each year at Susquehanna River at Wilkes-Barre, PA

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1833–2025.

Show relevant events (1 event)Shading marks when something was recorded, not what caused the line.

Published by the gauge's own operator from its sub-daily record; Hydrionis stores the figure rather than recomputing it. A year the gauge did not cover produces no value rather than a low one, and the gaps are stated below the chart. A peak is a property of this gauge and its reach: a larger flood upstream or downstream of it is not in this series.

What the shaded periods are (1 event)

A shaded period marks when something was recorded, not what caused the shape of the line. Where the two coincide, they coincided.

Documented record — A documented event, compiled from cited sources after it happened. The dates are as good as the record, which for older events can mean the month rather than the day.

Event	Type	Period	Standing	Authority
Hurricane Katrina water and sanitation collapse	Flood	2005-08-29 – 2005-09-30	Documented record	Compiled record

Not shown on this chart

The 1976 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
The 2022 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Yorkshire drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cantareira water crisis, São Paulo — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cape Town Day Zero — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
European drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.

View the data behind this chart

Underlying data
Period	Susquehanna River at Wilkes-Barre, PA (m³/s)
1833	4,984
1865	6,570
1891	4,644
1892	3,171
1893	3,256
1894	2,750
1895	3,200
1896	3,823
1898	2,234
1899	2,325
1900	2,676
1902	6,031
1903	3,370
1904	5,777
1905	3,653
1906	2,302
1907	1,855
1908	3,681
1909	3,540
1910	4,446
1911	2,676
1912	3,596
1913	5,210
1914	5,154
1915	3,596
1916	4,531
1917	2,144
1918	3,511
1919	1,894
1920	4,389
1921	2,452
1923	2,599
1924	3,653
1925	4,106
1926	2,551
1927	3,993
1929	4,502
1930	1,914
1931	2,115
1932	3,030
1933	2,826
1934	2,421
1935	4,276
1936	6,570
1937	2,189
1938	1,838
1939	3,879
1940	6,003
1941	3,908
1942	3,143
1943	5,409
1944	2,549
1945	3,370
1946	5,947
1947	4,276
1948	5,465
1950	4,870
1951	3,625
1952	3,511
1954	2,234
1955	2,432
1956	5,267
1957	3,030
1958	4,814
1959	3,200
1960	5,210
1961	4,616
1962	3,625
1963	3,710
1964	5,324
1965	1,263
1966	2,648
1967	2,401
1968	2,860
1969	2,280
1970	3,256
1971	3,115
1972	9,769
1973	2,599
1975	6,456
1976	3,341
1977	3,426
1978	3,285
1979	5,437
1980	2,945
1981	2,945
1983	3,908
1985	1,580
1986	4,870
1987	2,789
1988	2,328
1989	3,313
1990	2,121
1992	2,605
1993	5,239
1994	4,191
1995	2,042
1996	6,258
1998	3,908
1999	3,171
2000	3,653
2001	2,741
2002	2,234
2003	3,455
2004	6,428
2005	5,352
2006	6,173
2007	3,483
2008	3,256
2009	2,404
2010	3,455
2011	8,778
2013	2,271
2014	2,551
2015	2,888
2016	2,243
2017	3,115
2018	5,097
2020	2,945
2021	3,370
2023	2,832
2025	2,679

About this series

Everything below is a property of the data rather than a rating of it. There is deliberately no single confidence score: how much a gap matters depends on what you are about to do with the series, and only you know that.

Source	United States Geological Survey — National Water Information System · US Government work — public domain
How the values came to exist	Measured
Period held	1833–2025
Completeness	63.2% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	17 separate periods inside 1833–2025 hold no value. The longest runs from 1834 to 1864 — 31 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1833 and is not continuous from it: 193 years separate the first value from the last, and 63% of the years between them are held. The span is not the record.
Last read from the publisher	2026-10-01
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced

How much of the rain came back out

A discharge in cubic metres per second cannot be compared with anything: the larger number may only mean the larger catchment. Divided by the area draining to the gauge it becomes a depth of water over that land, which answers a question a reader already has — of the rain that fell here, how much came back out as river?

Water leaving the catchment above Susquehanna River at Wilkes-Barre, PA, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1900–2025.

Show relevant events (1 event)Shading marks when something was recorded, not what caused the line.

Computed by Hydrionis from the published annual mean flow and the catchment area the station's own publisher states. It is not a water balance: the difference between rainfall and runoff is not evaporation alone but also change in groundwater storage, water abstracted and taken elsewhere, and water imported by transfer schemes — which is why a catchment can yield more runoff than the rain that fell on it without anything being measured wrongly. A different area figure rescales every value here by the ratio between them.

What the shaded periods are (1 event)

A shaded period marks when something was recorded, not what caused the shape of the line. Where the two coincide, they coincided.

Documented record — A documented event, compiled from cited sources after it happened. The dates are as good as the record, which for older events can mean the month rather than the day.

Event	Type	Period	Standing	Authority
Hurricane Katrina water and sanitation collapse	Flood	2005-08-29 – 2005-09-30	Documented record	Compiled record

Not shown on this chart

The 1976 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
The 2022 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Yorkshire drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cantareira water crisis, São Paulo — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cape Town Day Zero — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
European drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.

View the data behind this chart

Underlying data
Period	Susquehanna River at Wilkes-Barre, PA (mm)
1900	394
1901	487
1902	601
1903	625
1904	517
1905	477
1906	422
1907	483
1908	420
1909	412
1910	363
1911	383
1912	487
1913	406
1914	447
1915	512
1916	522
1917	484
1918	463
1919	371
1920	469
1921	381
1922	431
1923	344
1924	425
1925	425
1926	488
1927	662
1928	503
1929	504
1930	323
1931	321
1932	480
1933	418
1934	358
1935	509
1936	482
1937	498
1938	405
1939	350
1940	504
1941	280
1942	466
1943	582
1944	344
1945	658
1946	446
1947	545
1948	471
1949	371
1950	596
1951	475
1952	503
1953	397
1954	397
1955	487
1956	565
1957	378
1958	562
1959	497
1960	532
1961	455
1962	375
1963	314
1964	372
1965	257
1966	363
1967	486
1968	452
1969	366
1970	444
1971	448
1972	800
1973	517
1974	493
1975	618
1976	619
1977	710
1978	521
1979	560
1980	337
1981	407
1982	410
1983	528
1984	578
1985	327
1986	529
1987	373
1988	309
1989	448
1990	595
1991	360
1992	488
1993	615
1994	640
1995	328
1996	766
1997	360
1998	553
1999	361
2000	594
2001	343
2002	492
2003	746
2004	695
2005	579
2006	662
2007	497
2008	530
2009	433
2010	465
2011	945
2012	359
2013	479
2014	448
2015	377
2016	340
2017	574
2018	815
2019	587
2020	431
2021	603
2022	447
2023	541
2024	506
2025	414

About this series

Source	United States Geological Survey — National Water Information System · US Government work — public domain
How the values came to exist	Derived Computed by Hydrionis
Period held	1900–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1900 to 2025 is held.
Inputs last read	2026-10-01 · when the records this was computed from were last read from their publishers
Calculation date	2026-08-24 · when the calculation method was last versioned, not a reading of any publisher
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced

Every gauge Hydrionis holds within this area

Gauges within the Upper Susquehanna-Lackawanna and what each holds
Gauge	Measures	Values	Record
Susquehanna River at Wilkes-Barre, PA	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	390	1833–2026
Susquehanna River at Danville, PA	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	366	1865–2026
Wapwallopen Creek near Wapwallopen, PA	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	318	1919–2026

How these gauges were attached to this water

Assigned by the publisher to a numbered basin Every gauge here is assigned to this drainage area by its own publisher, which issues the area an official code — 02050107. A drainage area is not a river: it contains the tributaries as well as the main channel, and a gauge in it may be on any of them.

What each gauge’s link to this water rests on
Gauge	Evidence	Established
Susquehanna River at Wilkes-Barre, PA	Stated by the publisher — USGS site service, huc_cd field — https://waterservices.usgs.gov/nwis/site/ ; named from the USGS Watershed Boundary Dataset 8-digit HU (Subbasin) layer — https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer/4	2026-10-02
Susquehanna River at Danville, PA	Stated by the publisher — USGS site service, huc_cd field — https://waterservices.usgs.gov/nwis/site/ ; named from the USGS Watershed Boundary Dataset 8-digit HU (Subbasin) layer — https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer/4	2026-10-02
Wapwallopen Creek near Wapwallopen, PA	Stated by the publisher — USGS site service, huc_cd field — https://waterservices.usgs.gov/nwis/site/ ; named from the USGS Watershed Boundary Dataset 8-digit HU (Subbasin) layer — https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer/4	2026-10-02

What this record holds

Hydrionis decides which waters get a page, and which of those are offered to search, from what is actually held rather than from how the page reads. Five signals are counted; this record has 4 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	3	yes, 3 or more
Years spanned	194	yes, 20 or more
Values held	1,074	yes, 1000 or more
Distinct measurements	4	yes, 2 or more
Publishers measuring it	1	no
Official identifiers	1	recorded, not counted

Use this data

Machine-readable JSON /api/v1/observations/by-subject/gauge-usgs-01536500.json
How to cite this, and who you must credit
How these figures were produced
Request this at a different scale, format or geography

No bulk download is offered here, which is a licence position rather than a product one: at least one contributing publisher does not permit redistribution. The values can be read on the page, cited, and pointed to at source.

Attribution and citation

Suggested citation for Hydrionis

Hydrionis (2026), Upper Susquehanna-Lackawanna gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-upper-susquehanna-lackawanna/

Cite Hydrionis where you rely on values Hydrionis computed, on the method that produced them, or on the compilation itself. The underlying measurements remain the publishers’ and their attribution requirements apply to you directly.

Recommended, not required. Hydrionis does not claim rights over unmodified public data it relayed, and doing arithmetic on somebody else’s measurements does not make them Hydrionis’s. Cite the version and the access date: the Upper Susquehanna-Lackawanna gauge records changes as publishers release and as methods are revised, and a citation without both cannot be checked later. Full guidance is on cite and reuse.

None of the contributing licences requires attribution. Crediting the publishers is still good practice and they are listed above.

Where these figures come from

MeasuredHigh confidence2025-05-08

Source: USGS — National Water Information System, USGS site 01536500, annual peak streamflow. Licence: Open.

Method: The instantaneous maximum discharge of each water year as published by USGS, dated to the day it occurred. One value per October-to-September water year; where the publisher lists both a systematic and a historic peak for a year, the larger is the annual maximum. Values the publisher marks as maximum daily averages are not held here, because they are not instantaneous peaks. Values marked as bounded rather than measured are held as censored observations carrying the bound. Cubic feet per second are converted to cubic metres per second and the publisher unit is recorded alongside.

Rating curves are extrapolated at extreme discharges, so the largest values in a peak series carry the largest measurement uncertainty. Data from the U.S. Geological Survey National Water Information System, a work of the United States government and therefore in the public domain.

Retrieved 1 October 2026.