The monitoring network within this area

Hydrionis holds 1,640 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.

2

Gauges

1,640

Values held

1911–2026

Record spans

Gauges within the Lower Sevier 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 SEVIER RIVER NEAR JUAB, UT

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1915–2025.

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	SEVIER RIVER NEAR JUAB, UT (m³/s)
1915	30.6
1916	31.1
1917	34.8
1918	41.1
1919	36.8
1920	30.9
1921	36.5
1922	60.6
1923	41.9
1924	45.3
1925	28.0
1926	32.3
1930	27.4
1931	28.0
1932	31.1
1933	31.4
1936	29.7
1937	26.8
1938	27.8
1939	33.7
1940	32.3
1941	29.7
1942	33.7
1943	31.4
1944	37.4
1945	29.4
1946	32.6
1948	34.8
1949	36.5
1950	31.1
1951	32.3
1952	26.7
1953	30.9
1954	31.1
1955	32.8
1956	28.0
1957	25.8
1958	39.1
1959	26.6
1960	25.7
1961	28.6
1962	32.6
1963	27.4
1964	36.5
1965	24.2
1966	26.3
1967	27.2
1968	31.4
1969	27.4
1970	29.4
1971	32.3
1972	30.3
1973	33.1
1974	33.4
1975	32.0
1976	33.4
1977	27.5
1978	26.1
1979	24.2
1980	32.0
1983	147
1984	131
1985	59.5
1986	37.4
1987	33.7
1988	23.6
1989	31.7
1990	30.6
1991	23.4
1992	23.2
1993	33.7
1994	33.1
1995	46.4
1996	26.8
1997	33.4
1998	53.0
1999	36.2
2000	31.4
2001	28.9
2002	19.1
2003	23.4
2004	23.3
2005	36.8
2006	66.3
2007	38.5
2008	37.4
2009	20.0
2010	59.7
2011	92.6
2012	36.2
2013	26.8
2014	18.8
2015	25.7
2016	19.0
2017	31.7
2018	23.9
2019	19.3
2020	32.0
2021	20.6
2022	16.7
2023	31.7
2024	21.6
2025	23.8

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	1915–2025
Completeness	92.8% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	4 separate periods inside 1915–2025 hold no value. The longest runs from 1927 to 1929 — 3 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1915 and is not continuous from it: 111 years separate the first value from the last, and 93% 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 SEVIER RIVER NEAR JUAB, UT, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1912–2025.

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	SEVIER RIVER NEAR JUAB, UT (mm)
1912	28.0
1913	17.0
1914	32.0
1915	19.0
1916	21.0
1917	23.0
1918	22.0
1919	20.0
1920	17.0
1921	20.0
1922	35.0
1923	36.0
1924	22.0
1925	15.0
1926	13.0
1927	12.0
1928	12.0
1929	14.0
1930	13.0
1931	11.0
1932	11.0
1933	12.0
1934	7.00
1935	7.00
1936	8.00
1937	11.0
1938	12.0
1939	13.0
1940	12.0
1941	12.0
1942	18.0
1943	16.0
1944	16.0
1945	13.0
1946	18.0
1947	13.0
1948	19.0
1949	17.0
1950	15.0
1951	14.0
1952	13.0
1953	17.0
1954	14.0
1955	12.0
1956	8.00
1957	8.00
1958	16.0
1959	12.0
1960	9.00
1961	6.00
1962	10.0
1963	7.00
1964	7.00
1965	9.00
1966	13.0
1967	9.00
1968	11.0
1969	15.0
1970	18.0
1971	17.0
1972	13.0
1973	17.0
1974	21.0
1975	14.0
1976	15.0
1977	10.0
1978	12.0
1979	12.0
1980	19.0
1981	18.0
1982	17.0
1983	85.0
1984	91.0
1985	46.0
1986	36.0
1987	26.0
1988	17.0
1989	14.0
1990	10.0
1991	10.0
1992	11.0
1993	12.0
1994	12.0
1995	17.0
1996	20.0
1997	15.0
1998	29.0
1999	21.0
2000	21.0
2001	13.0
2002	10.0
2003	11.0
2004	8.00
2005	13.0
2006	17.0
2007	12.0
2008	12.0
2009	10.0
2010	12.0
2011	36.0
2012	24.0
2013	11.0
2014	11.0
2015	11.0
2016	10.0
2017	9.00
2018	9.00
2019	10.0
2020	12.0
2021	9.00
2022	8.00
2023	14.0
2024	9.00
2025	9.00

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	1912–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1912 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.

838

Fullest snowpack recorded at Pine Creek, in 1998 (mm of water)

137

Thinnest, in 2026 (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 Pine Creek

Water years 1986–2026. 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	Pine Creek (mm)
1986	703
1987	492
1988	524
1989	405
1990	516
1991	508
1992	376
1993	644
1994	582
1995	615
1996	573
1997	651
1998	838
1999	405
2000	604
2001	329
2002	409
2003	528
2004	545
2005	616
2006	511
2007	348
2008	660
2009	531
2010	580
2011	689
2012	416
2013	568
2014	326
2015	364
2016	517
2017	468
2018	325
2019	777
2020	451
2021	384
2022	367
2023	737
2024	586
2025	430
2026	137

Read against the river

Pine Creek and SEVIER RIVER NEAR JUAB, UT both sit in this drainage area, and their records overlap by 39 years. That is the span the two have in common, not a count of years both actually hold — either record may have gaps inside it. The two are shown separately rather than on one axis: millimetres of stored water and cubic metres per second are not commensurable, and a difference between them would mean nothing.

Being in the same drainage area does not put the snowpack upstream of the gauge. A subbasin is an area, and snow on one tributary can join the river below a gauge on another — so a weak relationship here may say more about which tributary was measured than about the snow.

Every gauge Hydrionis holds within this area

Gauges within the Lower Sevier and what each holds
Gauge	Measures	Values	Record
SEVIER RIVER NEAR JUAB, UT	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	368	1911–2026
SEVIER RIVER NEAR LYNNDYL, UT	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	290	1915–2026

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 — 16030005. 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
SEVIER RIVER NEAR JUAB, UT	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
SEVIER RIVER NEAR LYNNDYL, UT	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 4 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	116	yes, 20 or more
Values held	1,640	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-10219000.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), Lower Sevier gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-lower-sevier/

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 Lower Sevier 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 confidence2025-05-04

Source: USGS — National Water Information System, USGS site 10219000, 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.