The monitoring network within this area

Hydrionis holds 1,490 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

1,490

Values held

1911–2026

Record spans

Gauges within the Donner und Blitzen 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 DONNER UND BLITZEN RIVER NR FRENCHGLEN OR

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1911–2025.

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	DONNER UND BLITZEN RIVER NR FRENCHGLEN OR (m³/s)
1911	51.0
1912	38.5
1913	39.1
1914	24.2
1915	58.3
1916	51.5
1918	12.5
1919	47.3
1920	32.3
1921	62.3
1930	7.82
1937	30.6
1939	44.7
1940	44.5
1941	23.6
1942	64.3
1943	34.8
1944	15.4
1945	36.2
1947	18.3
1948	48.1
1949	28.9
1950	22.5
1951	56.6
1952	64.0
1953	77.9
1954	35.1
1955	30.0
1956	60.6
1957	72.5
1958	40.2
1959	9.37
1960	29.2
1961	13.3
1962	24.0
1963	39.6
1964	42.5
1966	17.8
1967	34.0
1968	21.9
1969	67.4
1970	77.0
1971	77.9
1972	80.1
1973	19.8
1974	54.4
1975	30.9
1976	30.0
1977	30.6
1978	121
1979	42.2
1980	34.8
1981	47.3
1982	66.3
1983	66.8
1984	47.0
1985	34.3
1986	86.6
1987	20.3
1988	20.8
1989	97.7
1990	13.0
1991	56.6
1992	6.68
1993	99.7
1994	19.1
1995	61.7
1996	31.7
1997	84.7
1998	88.1
1999	32.6
2000	17.3
2001	30.3
2002	23.5
2003	45.3
2004	21.5
2005	118
2007	23.9
2008	31.1
2009	70.8
2010	61.2
2011	68.8
2012	20.4
2013	13.1
2014	26.2
2015	44.7
2016	31.1
2017	27.0
2018	9.23
2019	47.3
2020	17.4
2021	11.0
2022	32.6
2023	67.1
2024	29.7
2025	46.4

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	1911–2025
Completeness	83.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	7 separate periods inside 1911–2025 hold no value. The longest runs from 1922 to 1929 — 8 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1911 and is not continuous from it: 115 years separate the first value from the last, and 83% 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 DONNER UND BLITZEN RIVER NR FRENCHGLEN 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. 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	DONNER UND BLITZEN RIVER NR FRENCHGLEN OR (mm)
1912	315
1915	192
1918	147
1919	182
1920	227
1938	248
1939	159
1940	188
1941	201
1942	291
1943	265
1944	153
1945	287
1946	173
1947	134
1948	242
1949	150
1950	183
1951	212
1952	348
1953	217
1954	165
1955	183
1956	261
1957	292
1958	255
1959	103
1960	175
1961	109
1962	157
1963	167
1964	209
1965	219
1966	95.0
1967	194
1968	99.0
1969	265
1970	203
1971	275
1972	250
1973	154
1974	205
1975	289
1976	207
1977	111
1978	280
1979	287
1980	269
1981	227
1982	285
1983	434
1984	469
1985	211
1986	282
1987	158
1988	134
1989	284
1990	114
1991	178
1992	77.0
1993	318
1994	128
1995	285
1996	267
1997	264
1998	377
1999	278
2000	149
2001	142
2002	163
2003	169
2004	190
2005	242
2006	262
2007	154
2008	187
2009	190
2010	318
2011	450
2012	147
2013	130
2014	141
2015	127
2016	180
2017	214
2018	106
2019	293
2020	151
2021	126
2022	129
2023	249
2024	260
2025	314

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	81.6% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	3 separate periods inside 1912–2025 hold no value. The longest runs from 1921 to 1937 — 17 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1912 and is not continuous from it: 114 years separate the first value from the last, and 82% 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.

1,378

Fullest snowpack recorded at Fish Creek, in 1983 (mm of water)

257

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 Fish Creek

Water years 1980–2026. 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	Fish Creek (mm)
1980	901
1981	442
1982	972
1983	1,378
1984	1,327
1985	651
1986	896
1987	516
1988	489
1989	1,028
1990	338
1991	705
1992	391
1993	1,092
1994	433
1995	1,147
1996	876
1997	1,003
1998	977
1999	1,036
2000	575
2001	493
2002	674
2003	646
2004	789
2005	625
2006	1,147
2007	649
2008	705
2009	615
2010	820
2011	1,271
2012	514
2013	736
2014	615
2015	500
2016	864
2017	1,048
2018	500
2019	836
2020	639
2021	692
2022	528
2023	873
2024	1,092
2025	1,322
2026	257

Read against the river

Fish Creek and DONNER UND BLITZEN RIVER NR FRENCHGLEN OR both sit in this drainage area, and their records overlap by 45 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 Donner und Blitzen and what each holds
Gauge	Measures	Values	Record
DONNER UND BLITZEN RIVER NR FRENCHGLEN OR	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	323	1911–2026
BRIDGE CREEK NR FRENCHGLEN, OREG.	catchment area, annual maximum river flow	40	1911–2026

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 — 17120003. 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
DONNER UND BLITZEN RIVER NR FRENCHGLEN 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
BRIDGE CREEK NR FRENCHGLEN, OREG.	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	1	no
Years spanned	116	yes, 20 or more
Values held	1,490	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-10396000.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), Donner und Blitzen gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-donner-und-blitzen/

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 Donner und Blitzen 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 confidence2025-02-24

Source: USGS — National Water Information System, USGS site 10396000, 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.