The monitoring network within this area

Hydrionis holds 3,458 values from 5 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.

5

Gauges

3,458

Values held

1912–2026

Record spans

Gauges within the Middle Sevier huc8 subbasin

5 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 RIV BLW SAN PITCH RIV NR GUNNISON, UT

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1918–2025.

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 RIV BLW SAN PITCH RIV NR GUNNISON, UT (m³/s)
1918	24.8
1919	27.7
1920	40.5
1921	40.2
1922	74.2
1923	31.1
1924	14.6
1925	14.4
1926	15.9
1928	13.9
1929	15.7
1930	14.5
1931	8.01
1932	13.7
1933	12.0
1934	7.90
1935	8.10
1936	15.1
1937	14.4
1938	19.1
1939	12.9
1940	12.2
1941	41.9
1942	29.7
1943	12.3
1944	37.4
1945	15.4
1946	14.0
1947	21.0
1948	25.6
1949	18.9
1950	11.2
1952	58.0
1953	15.9
1956	10.3
1957	27.3
1958	26.4
1959	13.9
1960	10.5
1961	8.27
1962	36.5
1963	9.51
1964	14.1
1965	16.8
1966	16.8
1967	9.80
1968	18.8
1969	30.3
1970	22.8
1971	15.1
1972	13.4
1973	39.6
1974	30.6
1975	20.6
1976	15.1
1977	8.35
1978	15.3
1979	29.2
1980	19.1
1982	24.3
1987	23.6
1988	26.8
1989	18.6
1990	12.5
1991	19.7
1992	31.4
1993	51.3
1994	10.7
1995	93.2
1996	22.3
1997	38.5
1998	64.8
1999	32.6
2000	18.0
2001	14.4
2002	15.5
2003	13.0
2004	15.6
2005	68.2
2006	16.5
2008	20.2
2010	26.0
2011	97.4
2012	29.2
2013	10.9
2014	10.1
2015	12.3
2016	34.8
2017	16.5
2018	9.68
2019	72.5
2020	12.3
2022	9.15
2023	53.8
2024	14.3
2025	12.5

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	1918–2025
Completeness	88.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	8 separate periods inside 1918–2025 hold no value. The longest runs from 1983 to 1986 — 4 years with no reading. They are drawn as breaks in the line and are 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 89% 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 RIV BLW SAN PITCH RIV NR GUNNISON, 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. 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	SEVIER RIV BLW SAN PITCH RIV NR GUNNISON, UT (mm)
1918	18.0
1919	16.0
1920	20.0
1921	27.0
1922	45.0
1923	29.0
1924	16.0
1925	13.0
1926	11.0
1927	11.0
1928	12.0
1929	15.0
1930	13.0
1931	8.00
1932	11.0
1933	10.0
1934	6.00
1935	6.00
1936	10.0
1937	13.0
1938	19.0
1939	12.0
1940	10.0
1941	20.0
1942	27.0
1943	12.0
1944	22.0
1945	17.0
1946	15.0
1947	15.0
1948	19.0
1949	16.0
1950	12.0
1951	9.00
1952	27.0
1953	14.0
1954	9.00
1955	8.00
1956	7.00
1957	13.0
1958	16.0
1959	9.00
1960	8.00
1961	6.00
1962	11.0
1963	7.00
1964	7.00
1965	13.0
1966	9.00
1967	10.0
1968	14.0
1969	26.0
1970	22.0
1971	16.0
1972	11.0
1973	26.0
1974	19.0
1975	16.0
1976	12.0
1977	7.00
1978	11.0
1979	19.0
1980	35.0
1981	16.0
1982	24.0
1983	85.0
1984	93.0
1985	50.0
1986	36.0
1987	23.0
1988	19.0
1989	13.0
1990	9.00
1991	10.0
1992	9.00
1993	20.0
1994	11.0
1995	34.0
1996	15.0
1997	21.0
1998	34.0
1999	25.0
2000	15.0
2001	10.0
2002	9.00
2003	8.00
2004	10.0
2005	32.0
2006	17.0
2007	11.0
2008	11.0
2009	11.0
2010	13.0
2011	54.0
2012	19.0
2013	11.0
2014	10.0
2015	11.0
2016	10.0
2017	11.0
2018	9.00
2019	22.0
2020	10.0
2021	8.00
2022	7.00
2023	21.0
2024	13.0
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	1918–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1918 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

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

982

Fullest snowpack recorded at Pickle Keg, in 1984 (mm of water)

131

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 Pickle Keg

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	Pickle Keg (mm)
1979	636
1980	567
1981	281
1982	529
1983	753
1984	982
1985	379
1986	440
1987	338
1988	365
1989	390
1990	254
1991	404
1992	317
1993	428
1994	269
1995	391
1996	409
1997	441
1998	527
1999	307
2000	349
2001	308
2002	364
2003	374
2004	358
2005	292
2006	567
2007	239
2008	475
2009	438
2010	354
2011	497
2012	294
2013	322
2014	281
2015	264
2016	402
2017	366
2018	244
2019	593
2020	390
2021	312
2022	258
2023	620
2024	361
2025	345
2026	131

Read against the river

Pickle Keg and SEVIER RIVER BELOW PIUTE DAM, NEAR MARYSVALE, UT both sit in this drainage area, and their records overlap by 23 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 Middle Sevier and what each holds
Gauge	Measures	Values	Record
SEVIER RIV BLW SAN PITCH RIV NR GUNNISON, UT	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	352	1917–2026
SEVIER RIVER BELOW PIUTE DAM, NEAR MARYSVALE, UT	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	295	1912–2026
SEVIER RIVER NEAR SIGURD, UT	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	287	1914–2026
SALINA CREEK AT SALINA, UT	catchment area, annual maximum river flow	53	1914–2026
SEVIER RIVER ABOVE CLEAR CREEK, NEAR SEVIER, UT	catchment area, annual maximum river flow	47	1914–2026

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 — 16030003. 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 RIV BLW SAN PITCH RIV NR GUNNISON, 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 BELOW PIUTE DAM, NEAR MARYSVALE, 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 SIGURD, 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
SALINA CREEK AT SALINA, 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 ABOVE CLEAR CREEK, NEAR SEVIER, 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 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	4	yes, 3 or more
Years spanned	115	yes, 20 or more
Values held	3,458	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-10217000.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), Middle Sevier gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-middle-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 Middle 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 confidence2025-02-05

Source: USGS — National Water Information System, USGS site 10217000, 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.