The monitoring network within this area

Hydrionis holds 409 values from 2 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

409

Values held

1903–2026

Record spans

Gauges within the Skykomish huc8 subbasin

2 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 SKYKOMISH RIVER NEAR GOLD BAR, WA

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1928–2025.

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	SKYKOMISH RIVER NEAR GOLD BAR, WA (m³/s)
1928	532
1930	447
1931	994
1932	2,359
1933	2,512
1934	1,767
1936	549
1938	1,337
1939	818
1940	612
1941	597
1942	991
1943	2,027
1945	1,342
1946	1,138
1947	1,283
1948	631
1949	1,600
1951	1,858
1953	1,150
1955	866
1956	1,674
1958	399
1959	2,231
1961	1,144
1962	838
1964	691
1966	541
1968	1,393
1969	1,186
1970	479
1971	966
1972	1,124
1974	1,325
1975	2,169
1977	983
1978	699
1979	1,478
1980	2,551
1982	1,144
1984	1,155
1985	674
1986	1,348
1987	1,005
1988	1,594
1989	1,589
1990	2,888
1991	787
1993	954
1994	445
1995	1,249
1997	1,271
1998	1,807
1999	1,215
2000	498
2002	1,305
2003	1,379
2005	2,112
2006	3,653
2007	1,447
2009	2,095
2011	1,809
2012	759
2014	1,102
2015	2,716
2016	1,161
2017	1,535
2018	997
2020	2,044
2021	1,059
2022	1,509
2023	1,651
2025	875

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	1928–2025
Completeness	74.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	25 separate periods inside 1928–2025 hold no value. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1928 and is not continuous from it: 98 years separate the first value from the last, and 74% of the years between them are held. The span is not the record.
Last read from the publisher	2026-08-31
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 SKYKOMISH RIVER NEAR GOLD BAR, 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. 1929–2025.

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	SKYKOMISH RIVER NEAR GOLD BAR, WA (mm)
1929	1,664
1930	1,786
1931	2,078
1932	3,388
1933	3,851
1934	2,833
1935	2,176
1936	2,288
1937	2,424
1938	2,076
1939	2,537
1940	1,764
1941	1,703
1942	1,839
1943	2,374
1944	1,753
1945	2,406
1946	2,756
1947	2,854
1948	2,570
1949	2,987
1950	3,452
1951	2,392
1952	1,650
1953	3,090
1954	2,970
1955	3,028
1956	3,277
1957	2,039
1958	2,630
1959	3,785
1960	2,261
1961	2,742
1962	2,555
1963	2,026
1964	3,038
1965	2,346
1966	2,434
1967	2,899
1968	2,880
1969	2,419
1970	2,174
1971	3,168
1972	3,835
1973	1,900
1974	3,387
1975	3,272
1976	2,560
1977	2,450
1978	1,979
1979	2,264
1980	2,547
1981	2,174
1982	2,763
1983	2,344
1984	2,454
1985	2,286
1986	2,183
1987	1,735
1988	2,553
1989	2,492
1990	3,384
1991	2,475
1992	1,679
1993	1,852
1994	2,146
1995	3,311
1996	2,608
1997	3,717
1998	2,419
1999	3,505
2000	2,320
2001	2,205
2002	2,864
2003	2,729
2004	2,620
2005	1,906
2006	2,635
2007	2,737
2008	2,748
2009	2,682
2010	2,468
2011	3,157
2012	3,050
2013	2,783
2014	3,247
2015	2,301
2016	2,622
2017	2,765
2018	2,664
2019	1,837
2020	3,212
2021	3,001
2022	2,582
2023	1,822
2024	2,111
2025	2,564

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	1929–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1929 to 2025 is held.
Last read from the publisher	2026-08-24
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 Skykomish and what each holds
Gauge	Measures	Values	Record
SKYKOMISH RIVER NEAR GOLD BAR, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow	231	1928–2026
SOUTH FORK SKYKOMISH RIVER NEAR INDEX, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow	178	1903–2026

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 — 17110009. 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
SKYKOMISH RIVER NEAR GOLD BAR, 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	2026-08-26
SOUTH FORK SKYKOMISH RIVER NEAR INDEX, 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	2026-08-26

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	124	yes, 20 or more
Values held	409	no
Distinct measurements	4	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-12134500.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), Skykomish gauge records, accessed 2026-09-02, hydrionis.com/waters/united-states-skykomish/

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 Skykomish 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 confidence2025-03-24

Source: USGS — National Water Information System, USGS site 12134500, 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 31 August 2026.