The monitoring network within this area

Hydrionis holds 1,259 values from 5 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

1,259

Values held

1908–2026

Record spans

Gauges within the Wolf huc8 subbasin

5 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 EMBARRASS RIVER NEAR EMBARRASS, WI

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1920–2025.

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	EMBARRASS RIVER NEAR EMBARRASS, WI (m³/s)
1920	79.3
1921	102
1922	196
1923	112
1924	72.8
1925	36.5
1926	46.7
1927	45.0
1928	83.0
1929	98.5
1930	25.2
1931	22.7
1932	42.8
1933	44.5
1934	65.4
1935	51.3
1936	45.6
1937	49.3
1938	88.6
1939	112
1940	65.4
1941	57.5
1942	65.4
1943	129
1944	69.7
1945	78.2
1946	82.7
1947	67.7
1948	44.7
1949	39.4
1950	42.2
1951	86.9
1952	118
1953	112
1954	31.7
1955	37.9
1956	85.0
1957	37.1
1958	32.8
1959	65.7
1960	138
1961	104
1962	44.2
1963	57.2
1964	26.6
1965	200
1966	47.0
1967	106
1968	47.3
1969	131
1970	64.8
1971	83.3
1972	89.5
1973	113
1974	76.7
1975	48.7
1976	79.9
1977	34.3
1978	80.1
1979	73.3
1980	89.2
1981	68.2
1982	57.8
1983	64.3
1984	66.5
1994	102
1995	37.4
1996	137
1997	77.3
1998	56.6
1999	35.4
2000	46.7
2001	54.4
2002	45.0
2003	62.3
2004	115
2006	34.8
2007	45.9
2008	53.2
2009	38.8
2010	83.8
2011	101
2012	47.6
2013	43.0
2014	92.3
2015	43.0
2016	102
2017	60.9
2018	68.5
2019	157
2020	82.7
2021	48.7
2022	47.0
2023	69.7
2025	38.5

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	1920–2025
Completeness	89.6% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	3 separate periods inside 1920–2025 hold no value. The longest runs from 1985 to 1993 — 9 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1920 and is not continuous from it: 106 years separate the first value from the last, and 90% 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 WOLF RIVER AT NEW LONDON, WI, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1914–2025.

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	WOLF RIVER AT NEW LONDON, WI (mm)
1914	274
1915	290
1916	377
1917	279
1918	285
1919	335
1920	298
1921	251
1922	360
1923	267
1924	326
1925	199
1926	308
1927	292
1928	381
1929	350
1930	182
1931	151
1932	187
1933	177
1934	196
1935	258
1936	217
1937	233
1938	352
1939	296
1940	274
1941	371
1942	379
1943	343
1944	221
1945	290
1946	287
1947	226
1948	181
1949	175
1950	222
1951	310
1952	275
1953	235
1954	235
1955	205
1956	200
1957	162
1958	167
1959	252
1960	381
1961	289
1962	281
1963	183
1964	158
1965	311
1966	238
1967	277
1968	289
1969	324
1970	235
1971	282
1972	325
1973	447
1974	249
1975	279
1976	279
1977	185
1978	300
1979	408
1980	285
1981	240
1982	297
1983	357
1984	370
1985	402
1986	382
1987	190
1988	173
1989	180
1990	251
1991	315
1992	337
1993	442
1994	279
1995	260
1996	372
1997	261
1998	232
1999	193
2000	238
2001	265
2002	274
2003	250
2004	306
2005	210
2006	200
2007	183
2008	229
2009	200
2010	288
2011	354
2012	211
2013	269
2014	331
2015	313
2016	345
2017	387
2018	350
2019	577
2020	482
2021	285
2022	308
2023	322
2024	319
2025	292

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	1914–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1914 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 Wolf and what each holds
Gauge	Measures	Values	Record
WOLF RIVER AT NEW LONDON, WI	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	316	1913–2026
EMBARRASS RIVER NEAR EMBARRASS, WI	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	291	1919–2026
WAUPACA RIVER NEAR WAUPACA, WI	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	224	1916–2026
WOLF RIVER AT KESHENA FALLS NEAR KESHENA, WI	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	221	1908–2026
LITTLE WOLF RIVER AT ROYALTON, WI	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	207	1914–2026

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 — 04030202. 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
WOLF RIVER AT NEW LONDON, WI	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
EMBARRASS RIVER NEAR EMBARRASS, WI	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
WAUPACA RIVER NEAR WAUPACA, WI	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
WOLF RIVER AT KESHENA FALLS NEAR KESHENA, WI	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
LITTLE WOLF RIVER AT ROYALTON, WI	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 5 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	5	yes, 3 or more
Years spanned	119	yes, 20 or more
Values held	1,259	yes, 1000 or more
Distinct measurements	5	yes, 2 or more
Publishers measuring it	2	yes, 2 or more
Official identifiers	1	recorded, not counted

Use this data

Machine-readable JSON /api/v1/observations/by-subject/gauge-usgs-04079000.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), Wolf gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-wolf/

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 Wolf 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 confidence2025-04-06

Source: USGS — National Water Information System, USGS site 04079000, 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.