The monitoring network within this area

Hydrionis holds 1,810 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

1,810

Values held

1908–2026

Record spans

Gauges within the North Umpqua 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 CLEARWATER RIVER ABV TRAP CK NR TOKETEE FALLS, OR

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1928–2024.

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	CLEARWATER RIVER ABV TRAP CK NR TOKETEE FALLS, OR (m³/s)
1928	8.10
1929	7.42
1931	5.35
1932	8.38
1933	10.8
1934	5.92
1935	6.17
1936	7.08
1937	6.68
1938	8.78
1939	6.40
1940	6.06
1941	4.76
1943	12.8
1945	7.25
1947	7.16
1948	12.6
1949	11.1
1950	9.43
1952	10.4
1953	11.3
1954	3.48
1955	13.5
1956	3.88
1958	7.67
1959	4.53
1960	5.92
1962	4.11
1963	6.57
1964	7.50
1966	5.49
1967	4.45
1968	4.47
1969	5.24
1970	5.92
1971	12.0
1972	9.57
1973	6.23
1974	8.47
1975	8.81
1976	7.39
1977	4.70
1979	5.32
1980	5.49
1981	5.13
1982	6.77
1983	9.43
1984	8.78
1985	7.62
1986	6.37
1987	0.283
1988	5.21
1989	4.36
1990	5.47
1991	6.12
1992	4.13
1993	7.22
1994	3.79
1995	3.99
1997	21.7
1998	7.65
1999	4.02
2000	5.52
2002	4.79
2003	1.47
2005	4.96
2006	4.22
2007	6.80
2009	8.07
2010	3.11
2011	5.80
2012	4.59
2013	8.16
2014	6.63
2015	5.01
2017	11.6
2018	5.69
2019	9.60
2021	5.13
2022	3.09
2023	4.73
2024	4.59

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	1928–2024
Completeness	84.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	15 separate periods inside 1928–2024 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: 97 years separate the first value from the last, and 85% 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 CLEARWATER RIVER ABV TRAP CK NR TOKETEE FALLS, OR, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1928–2025.

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	CLEARWATER RIVER ABV TRAP CK NR TOKETEE FALLS, OR (mm)
1928	1,348
1929	1,196
1930	1,092
1931	909
1932	1,182
1933	1,271
1934	1,182
1935	1,181
1936	1,201
1937	1,107
1938	1,385
1939	1,217
1940	1,119
1941	1,060
1942	1,178
1943	1,566
1944	1,213
1945	1,193
1947	1,344
1948	1,414
1949	1,411
1950	1,565
1951	1,788
1952	1,749
1953	932
1954	132
1955	107
1956	204
1957	162
1958	230
1959	88.0
1960	106
1961	72.0
1962	108
1963	148
1964	199
1965	213
1966	139
1967	99.0
1968	89.0
1969	90.0
1970	117
1971	230
1972	394
1973	98.0
1974	290
1975	269
1976	205
1977	124
1978	75.0
1979	104
1980	77.0
1981	106
1982	173
1983	258
1984	212
1985	132
1986	135
1987	98.0
1988	87.0
1989	105
1990	89.0
1991	113
1992	71.0
1993	166
1994	102
1995	118
1996	453
1997	363
1998	115
1999	148
2000	317
2001	194
2002	81.0
2003	111
2004	79.0
2005	146
2006	440
2007	494
2008	453
2009	518
2010	429
2011	507
2012	467
2013	520
2014	461
2015	491
2016	443
2017	703
2018	452
2019	677
2020	558
2021	520
2022	448
2023	510
2024	482
2025	536

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	1928–2025
Completeness	99.0% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	One period inside 1928–2025 holds no value: 1946. It is drawn as a break in the line and is 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 99% 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

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

985

Fullest snowpack recorded at Diamond Lake, in 1999 (mm of water)

18

Thinnest, in 2015 (mm of water)

March

Month the pack is usually at its fullest

May

Month the pack has gone by, in half of years

Peak snowpack at Diamond Lake

Water years 1981–2026. 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	Diamond Lake (mm)
1981	33.0
1983	573
1984	480
1985	515
1986	357
1987	402
1988	191
1989	533
1990	188
1991	145
1992	118
1993	584
1994	230
1995	316
1996	186
1997	399
1998	376
1999	985
2000	530
2001	249
2002	439
2003	180
2004	374
2005	90.0
2006	520
2007	253
2008	496
2009	491
2010	210
2011	606
2012	396
2013	304
2014	108
2015	18.0
2016	419
2017	564
2018	145
2019	515
2020	270
2021	400
2022	247
2023	452
2024	240
2025	630
2026	45.0

Read against the river

Diamond Lake and N UMPQUA RIVER BLW LEMOLO LK, NR TOKETEE FALLS, OR both sit in this drainage area, and their records overlap by 35 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 North Umpqua and what each holds
Gauge	Measures	Values	Record
CLEARWATER RIVER ABV TRAP CK NR TOKETEE FALLS, OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	329	1927–2026
N UMPQUA RIVER BLW LEMOLO LK, NR TOKETEE FALLS, OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	287	1927–2026
NORTH UMPQUA RIVER AT WINCHESTER, OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	280	1908–2026
LAKE CREEK NEAR DIAMOND LAKE, OR	catchment area, annual maximum river flow	56	1927–2026
NORTH UMPQUA RIVER AT TOKETEE FALLS, OR	catchment area, annual maximum river flow	44	1925–2026

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 — 17100301. 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
CLEARWATER RIVER ABV TRAP CK NR TOKETEE FALLS, OR	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
N UMPQUA RIVER BLW LEMOLO LK, NR TOKETEE FALLS, OR	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
NORTH UMPQUA RIVER AT WINCHESTER, OR	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
LAKE CREEK NEAR DIAMOND LAKE, OR	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
NORTH UMPQUA RIVER AT TOKETEE FALLS, OR	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	119	yes, 20 or more
Values held	1,810	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-14314500.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), North Umpqua gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-north-umpqua/

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 North Umpqua 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 confidence2024-12-29

Source: USGS — National Water Information System, USGS site 14314500, 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.