The monitoring network within this area

Hydrionis holds 1,093 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

1,093

Values held

1861–2026

Record spans

Gauges within the Upper Willamette 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 WILLAMETTE RIVER AT ALBANY, OR

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1861–2024.

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	WILLAMETTE RIVER AT ALBANY, OR (m³/s)
1861	9,628
1877	1,804
1879	3,228
1881	7,532
1882	3,596
1884	2,860
1890	8,240
1893	2,257
1894	4,899
1895	2,447
1896	3,625
1897	2,410
1899	3,171
1900	3,681
1901	6,541
1903	6,598
1904	3,568
1906	1,676
1907	6,230
1909	3,370
1911	2,209
1912	4,106
1913	2,591
1914	1,900
1915	1,501
1916	4,672
1917	1,402
1919	2,478
1920	1,954
1921	3,341
1923	5,833
1924	1,472
1925	3,681
1926	4,049
1927	5,409
1928	2,095
1929	1,438
1931	3,087
1932	3,794
1933	2,676
1934	2,161
1936	3,540
1937	3,596
1938	2,741
1939	1,727
1940	1,671
1941	2,435
1943	6,173
1945	2,183
1946	3,908
1948	5,239
1950	2,803
1951	2,319
1953	4,927
1955	1,761
1957	2,288
1959	2,186
1960	1,784
1961	4,672
1963	2,095
1964	2,438
1966	2,401
1967	1,784
1968	1,495
1970	2,319
1971	2,328
1972	2,888
1974	3,341
1975	1,521
1976	2,418
1977	510
1979	1,461
1980	2,010
1981	2,682
1983	1,988
1984	2,095
1986	2,560
1988	1,914
1989	1,792
1990	1,328
1991	1,356
1993	1,438
1994	830
1995	2,302
1996	3,540
1998	1,495
2000	1,708
2002	1,526
2003	1,501
2004	1,042
2006	2,452
2008	1,379
2009	1,543
2010	1,521
2011	1,688
2012	2,316
2014	1,906
2015	2,161
2017	1,540
2019	2,809
2020	1,515
2022	1,645
2024	1,792

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	1861–2024
Completeness	62.8% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	42 separate periods inside 1861–2024 hold no value. The longest runs from 1862 to 1876 — 15 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1861 and is not continuous from it: 164 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 WILLAMETTE RIVER AT ALBANY, OR, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1895–2025.

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	WILLAMETTE RIVER AT ALBANY, OR (mm)
1895	835
1896	1,526
1897	1,191
1898	754
1899	1,408
1900	987
1901	1,101
1902	1,158
1903	1,009
1904	1,252
1905	633
1906	889
1907	1,185
1908	746
1909	1,168
1910	853
1911	744
1912	1,082
1913	929
1914	809
1915	791
1916	1,114
1917	1,096
1918	870
1919	1,179
1920	971
1921	1,248
1922	831
1923	961
1924	830
1925	1,003
1926	828
1927	1,233
1928	864
1929	777
1930	594
1931	687
1932	1,105
1933	1,142
1934	831
1935	789
1936	875
1937	1,225
1938	1,078
1939	700
1940	771
1941	748
1942	1,039
1943	1,124
1944	526
1945	1,145
1946	1,189
1947	1,031
1948	1,295
1949	930
1950	1,632
1951	1,328
1952	900
1953	1,492
1954	963
1955	1,423
1956	1,378
1957	1,046
1958	1,165
1959	895
1960	1,111
1961	1,202
1962	978
1963	985
1964	1,340
1965	969
1966	989
1967	794
1968	1,027
1969	998
1970	1,074
1971	1,416
1972	1,324
1973	1,002
1974	1,283
1975	1,230
1976	883
1977	781
1978	745
1979	905
1980	931
1981	1,010
1982	1,262
1983	1,255
1984	1,327
1985	713
1986	1,025
1987	671
1988	862
1989	833
1990	843
1991	887
1992	606
1993	957
1994	647
1995	1,168
1996	1,669
1997	1,116
1998	1,145
1999	1,231
2000	862
2001	620
2002	783
2003	920
2004	832
2005	654
2006	1,252
2007	873
2008	947
2009	827
2010	1,051
2011	999
2012	1,428
2013	675
2014	1,118
2015	759
2016	1,025
2017	1,183
2018	680
2019	793
2020	787
2021	789
2022	935
2023	828
2024	1,102
2025	962

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	1895–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1895 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 Willamette and what each holds
Gauge	Measures	Values	Record
WILLAMETTE RIVER AT ALBANY, OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	440	1861–2026
LONG TOM RIVER AT MONROE, OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	345	1920–2026
LUCKIAMUTE RIVER NEAR SUVER, OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	308	1905–2026

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 — 17090003. 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
WILLAMETTE RIVER AT ALBANY, OR	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
LONG TOM RIVER AT MONROE, OR	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
LUCKIAMUTE RIVER NEAR SUVER, OR	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	3	yes, 3 or more
Years spanned	166	yes, 20 or more
Values held	1,093	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-14174000.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 Willamette gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-upper-willamette/

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 Willamette 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 confidence2024-12-31

Source: USGS — National Water Information System, USGS site 14174000, 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.