The monitoring network within this area

Hydrionis holds 771 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.

3

Gauges

771

Values held

1909–2026

Record spans

Gauges within the Sauk 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 SAUK RIVER AB WHITE CHUCK RIVER NR DARRINGTON, WA

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1917–2024.

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	SAUK RIVER AB WHITE CHUCK RIVER NR DARRINGTON, WA (m³/s)
1917	691
1918	239
1919	323
1920	254
1921	824
1928	199
1930	143
1931	210
1932	648
1933	527
1935	374
1936	125
1937	122
1938	233
1939	199
1940	118
1941	204
1942	176
1943	292
1945	253
1946	289
1947	382
1949	160
1951	589
1952	144
1953	265
1955	183
1956	273
1958	126
1959	416
1961	276
1962	205
1964	187
1966	138
1967	476
1969	170
1970	141
1971	203
1972	221
1974	354
1975	549
1977	244
1978	212
1979	538
1980	1,136
1982	205
1984	357
1985	183
1986	365
1987	194
1988	297
1989	453
1990	697
1991	169
1993	146
1994	133
1995	238
1997	286
1998	220
1999	368
2001	104
2002	382
2003	306
2004	532
2005	218
2006	951
2007	428
2008	323
2009	212
2010	360
2011	168
2013	203
2014	200
2015	566
2016	311
2017	479
2018	215
2020	379
2021	262
2022	262
2023	450
2024	171

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	1917–2024
Completeness	75.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	21 separate periods inside 1917–2024 hold no value. The longest runs from 1922 to 1927 — 6 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1917 and is not continuous from it: 108 years separate the first value from the last, and 76% 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 SAUK RIVER AB WHITE CHUCK RIVER NR DARRINGTON, WA, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1918–2025.

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	SAUK RIVER AB WHITE CHUCK RIVER NR DARRINGTON, WA (mm)
1918	2,838
1919	2,627
1920	2,527
1929	1,617
1930	1,789
1931	2,280
1932	3,164
1933	3,602
1934	2,899
1935	2,230
1936	2,162
1937	2,373
1938	2,054
1939	2,611
1940	2,016
1941	1,871
1942	1,815
1943	2,339
1944	1,725
1945	2,321
1946	2,767
1947	2,872
1948	2,611
1949	3,110
1950	3,550
1951	2,561
1952	1,888
1953	3,207
1954	3,192
1955	2,976
1956	3,203
1957	2,167
1958	2,740
1959	3,548
1960	2,327
1961	2,740
1962	2,525
1963	2,265
1964	2,973
1965	2,466
1966	2,520
1967	3,037
1968	2,939
1969	2,432
1970	2,068
1971	2,933
1972	3,626
1973	2,078
1974	3,262
1975	3,035
1976	2,595
1977	2,275
1978	2,039
1979	2,253
1980	2,686
1981	2,370
1982	2,799
1983	2,436
1984	2,443
1985	2,318
1986	2,286
1987	1,914
1988	2,613
1989	2,416
1990	3,332
1991	2,640
1992	1,806
1993	1,834
1994	2,143
1995	3,257
1996	2,532
1997	3,520
1998	2,078
1999	3,162
2000	2,050
2001	1,821
2002	2,690
2003	2,831
2004	2,404
2005	1,834
2006	2,606
2007	2,867
2008	2,300
2009	2,286
2010	2,280
2011	2,910
2012	3,148
2013	2,618
2014	3,330
2015	2,373
2016	2,825
2017	2,845
2018	2,736
2019	1,805
2020	2,932
2021	2,942
2022	2,429
2023	1,887
2024	2,029
2025	2,495

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	Derived Computed by Hydrionis
Period held	1918–2025
Completeness	92.6% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	One period inside 1918–2025 holds no value: 1921 to 1928, 8 years with no reading. It is drawn as a break in the line and is never interpolated across.
Continuity	The record begins in 1918 and is not continuous from it: 108 years separate the first value from the last, and 93% of the years between them are held. The span is not the record.
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

The snow standing above this water

1 automated snow station sits inside this drainage area, weighing the snowpack rather than measuring how deep it is.

1,683

Fullest snowpack recorded at Decline Creek, in 2021 (mm of water)

535

Thinnest, in 2026 (mm of water)

April

Month the pack is usually at its fullest

July

Month the pack has gone by, in half of years

Peak snowpack at Decline Creek

Water years 2020–2026. Each point is the fullest month of that snow season.

A water year runs October to September and is named for the year it ends, so the snow of one winter stays in one point. The value is the fullest month, not the fullest day: a pack that peaked sharply mid-month reads lower here than a single measurement taken at the right moment would.

View the data behind this chart

Underlying data
Period	Decline Creek (mm)
2020	1,274
2021	1,683
2022	1,357
2023	1,540
2024	914
2025	1,151
2026	535

Why the snow is not read against the river here

Peak snow water equivalent and Mean river flow, water year overlap for only 5 years at these subjects. A relationship read off a span that short is reading the weather of a few seasons.

Every gauge Hydrionis holds within this area

Gauges within the Sauk and what each holds
Gauge	Measures	Values	Record
SAUK RIVER AB WHITE CHUCK RIVER NR DARRINGTON, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	339	1917–2026
SAUK RIVER NEAR SAUK, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	329	1911–2026
SAUK RIVER AT DARRINGTON, WA	catchment area, annual maximum river flow	21	1909–2026

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 — 17110006. 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
SAUK RIVER AB WHITE CHUCK RIVER NR DARRINGTON, WA	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
SAUK RIVER NEAR SAUK, WA	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
SAUK RIVER AT DARRINGTON, WA	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 3 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	2	no
Years spanned	118	yes, 20 or more
Values held	771	no
Distinct measurements	6	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-12186000.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), Sauk gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-sauk/

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 Sauk 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 confidence2024-12-18

Source: USGS — National Water Information System, USGS site 12186000, 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.