The monitoring network within this area

Hydrionis holds 3,381 values from 6 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.

6

Gauges

3,381

Values held

1900–2026

Record spans

Gauges within the Naches huc8 subbasin

6 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 AMERICAN RIVER NEAR NILE, WA

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1940–2023.

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	AMERICAN RIVER NEAR NILE, WA (m³/s)
1940	31.1
1941	21.1
1943	37.9
1944	14.6
1945	36.2
1946	43.9
1947	32.8
1948	96.8
1949	60.9
1951	48.1
1952	27.5
1953	30.0
1954	49.8
1955	50.7
1956	81.3
1957	39.1
1958	51.0
1959	28.9
1960	30.6
1961	52.1
1962	22.4
1963	30.9
1964	41.1
1965	30.0
1966	56.1
1967	48.4
1968	97.4
1969	56.1
1970	68.2
1971	48.4
1972	71.6
1974	122
1975	75.9
1977	17.7
1979	24.1
1980	46.4
1982	51.0
1983	74.2
1984	37.1
1985	64.6
1986	47.3
1987	43.0
1988	34.0
1989	29.4
1990	36.5
1992	26.7
1993	38.5
1994	25.6
1995	38.2
1996	115
1997	64.8
1998	44.2
1999	72.5
2001	23.9
2002	47.6
2003	42.5
2004	24.3
2005	34.5
2006	69.7
2008	65.1
2009	36.5
2010	35.1
2011	58.0
2012	41.6
2013	36.2
2014	30.9
2015	48.1
2017	48.7
2019	27.4
2020	42.2
2021	35.1
2022	41.9
2023	47.3

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	1940–2023
Completeness	86.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	11 separate periods inside 1940–2023 hold no value. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1940 and is not continuous from it: 84 years separate the first value from the last, and 87% 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 AMERICAN RIVER NEAR NILE, 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. 1940–2025.

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	AMERICAN RIVER NEAR NILE, WA (mm)
1940	890
1941	722
1942	711
1943	1,073
1944	518
1945	807
1946	1,256
1947	1,100
1948	1,089
1949	1,246
1950	1,437
1951	1,204
1952	820
1953	1,079
1954	1,311
1955	1,053
1956	1,521
1957	866
1958	1,155
1959	1,197
1960	922
1961	1,195
1962	1,011
1963	825
1964	1,038
1965	1,012
1966	884
1967	1,065
1968	1,124
1969	1,025
1970	974
1971	1,317
1972	1,577
1973	698
1974	1,609
1975	1,347
1976	1,059
1977	611
1978	889
1979	733
1980	1,149
1981	742
1982	1,204
1983	1,285
1984	986
1985	696
1986	883
1987	853
1988	807
1989	790
1990	1,016
1991	925
1992	669
1993	645
1994	732
1995	1,426
1996	1,186
1997	1,602
1998	1,023
1999	1,615
2000	840
2001	552
2002	1,125
2003	985
2004	840
2005	621
2006	1,287
2007	1,042
2008	940
2009	900
2010	1,003
2011	1,348
2012	1,213
2013	878
2014	1,127
2015	904
2016	1,354
2017	1,463
2018	988
2019	758
2020	964
2021	1,027
2022	1,035
2023	853
2024	770
2025	1,093

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	1940–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1940 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

The snow standing above this water

4 automated snow stations sit inside this drainage area, weighing the snowpack rather than measuring how deep it is.

1,427

Fullest snowpack recorded at Bumping Ridge, in 1999 (mm of water)

98

Thinnest, in 1981 (mm of water)

April

Month the pack is usually at its fullest

June

Month the pack has gone by, in half of years

Peak snowpack at Bumping Ridge

Water years 1979–2026. 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	Bumping Ridge (mm)
1979	549
1981	98.0
1984	761
1985	751
1986	586
1987	580
1988	570
1989	717
1990	636
1991	558
1992	438
1993	576
1994	557
1995	640
1996	467
1997	1,287
1998	742
1999	1,427
2000	724
2001	417
2002	905
2003	548
2004	647
2005	130
2006	914
2007	734
2008	914
2009	803
2010	682
2011	882
2012	908
2013	561
2014	651
2015	125
2016	738
2017	819
2018	678
2019	544
2020	672
2021	778
2022	610
2023	569
2024	532
2025	640
2026	393

Why the snow is not read against the river here

These two series do not overlap in time: Peak snow water equivalent runs 1978–2026 and Mean river flow, water year runs 1909–1976.

Every gauge Hydrionis holds within this area

Gauges within the Naches and what each holds
Gauge	Measures	Values	Record
AMERICAN RIVER NEAR NILE, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	294	1939–2026
BUMPING RIVER NEAR NILE, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	240	1909–2026
TIETON RIVER AT CANAL HEADWORKS NEAR NACHES, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	234	1907–2026
NACHES RIVER BELOW TIETON RIVER NEAR NACHES, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	234	1909–2026
TIETON RIVER AT TIETON DAM NEAR NACHES, WA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	211	1909–2026
NACHES RIVER NEAR NORTH YAKIMA, WA	catchment area, annual maximum river flow	17	1900–2026

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 — 17030002. 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
AMERICAN RIVER NEAR NILE, 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
BUMPING RIVER NEAR NILE, 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
TIETON RIVER AT CANAL HEADWORKS NEAR NACHES, 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
NACHES RIVER BELOW TIETON RIVER NEAR NACHES, 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
TIETON RIVER AT TIETON DAM NEAR NACHES, 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
NACHES RIVER NEAR NORTH YAKIMA, 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 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	127	yes, 20 or more
Values held	3,381	yes, 1000 or more
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-12488500.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), Naches gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-naches/

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 Naches 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 confidence2023-12-06

Source: USGS — National Water Information System, USGS site 12488500, 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.