The monitoring network within this area

Hydrionis holds 6,532 values from 9 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.

9

Gauges

6,532

Values held

1890–2026

Record spans

Gauges within the Truckee huc8 subbasin

9 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 TRUCKEE RV AT RENO, NV

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1913–2025.

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	TRUCKEE RV AT RENO, NV (m³/s)
1913	213
1947	52.1
1948	48.1
1949	42.8
1950	74.2
1952	225
1953	97.1
1954	105
1955	28.9
1957	116
1958	172
1959	29.7
1960	74.2
1961	18.7
1962	58.3
1963	521
1964	320
1965	54.9
1967	193
1968	66.0
1969	153
1970	210
1971	91.5
1972	36.2
1973	51.5
1974	102
1975	106
1977	17.0
1978	86.4
1979	65.7
1980	244
1981	64.6
1983	205
1985	52.4
1986	408
1987	52.7
1988	15.3
1989	56.4
1990	32.0
1991	71.1
1992	13.8
1993	64.8
1994	46.4
1995	181
1996	211
1997	515
1998	157
1999	125
2000	51.3
2001	17.1
2002	42.5
2003	42.5
2004	33.7
2005	117
2007	26.3
2008	33.7
2009	59.2
2010	74.5
2011	96.8
2012	61.4
2014	40.5
2015	58.3
2016	94.0
2017	362
2018	189
2019	146
2020	54.1
2021	22.4
2023	161
2024	48.1
2025	49.8

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	1913–2025
Completeness	62.8% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	10 separate periods inside 1913–2025 hold no value. The longest runs from 1914 to 1946 — 33 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1913 and is not continuous from it: 113 years separate the first value from the last, and 63% 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 TRUCKEE R A TAHOE CITY CA, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1909–2025.

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	TRUCKEE R A TAHOE CITY CA (mm)
1909	331
1910	300
1911	308
1912	163
1913	160
1914	166
1915	150
1916	197
1917	254
1918	204
1919	191
1920	135
1921	112
1922	176
1923	162
1924	116
1925	64.0
1926	45.0
1927	95.0
1928	142
1929	57.0
1930	42.0
1931	0
1932	16.0
1933	4.00
1934	42.0
1935	4.00
1936	81.0
1937	98.0
1938	125
1939	204
1940	99.0
1941	94.0
1942	247
1943	349
1944	146
1945	88.0
1946	113
1947	152
1948	117
1949	98.0
1950	109
1951	180
1952	472
1953	215
1954	138
1955	145
1956	173
1957	172
1958	296
1959	146
1960	116
1961	47.0
1962	44.0
1963	42.0
1964	94.0
1965	129
1966	154
1967	218
1968	125
1969	425
1970	301
1971	226
1972	135
1973	127
1974	283
1975	211
1976	204
1977	85.0
1978	64.0
1979	89.0
1980	75.0
1981	125
1982	417
1983	796
1984	296
1985	112
1986	338
1987	136
1988	87.0
1989	58.0
1990	25.0
1991	0
1992	0
1993	5.00
1994	0
1995	33.0
1996	299
1997	457
1998	342
1999	322
2000	133
2001	166
2002	73.0
2003	71.0
2004	43.0
2005	67.0
2006	100
2007	136
2008	100
2009	50.0
2010	58.0
2011	57.0
2012	129
2013	112
2014	58.0
2015	0
2016	19.0
2017	355
2018	171
2019	279
2020	97.0
2021	139
2022	72.0
2023	40.0
2024	89.0
2025	88.0

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	1909–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1909 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

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

1,240

Fullest snowpack recorded at Independence Camp, in 2023 (mm of water)

23

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 Independence Camp

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	Independence Camp (mm)
1979	343
1980	592
1981	183
1982	771
1983	1,149
1984	563
1985	393
1986	718
1987	239
1988	267
1989	501
1990	301
1991	172
1992	249
1993	871
1994	251
1995	878
1996	451
1997	586
1998	742
1999	699
2000	349
2001	244
2002	469
2003	256
2004	392
2005	520
2006	461
2007	246
2008	474
2009	272
2010	426
2011	793
2012	232
2013	183
2014	39.0
2015	23.0
2016	266
2017	615
2018	254
2019	1,015
2020	255
2021	383
2022	462
2023	1,240
2024	542
2025	459
2026	290

Read against the river

Independence Camp and TRUCKEE R A TAHOE CITY CA both sit in this drainage area, and their records overlap by 46 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 Truckee and what each holds
Gauge	Measures	Values	Record
TRUCKEE R A FARAD CA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	348	1909–2026
TRUCKEE R A TAHOE CITY CA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	338	1909–2026
TRUCKEE RV AT RENO, NV	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	316	1906–2026
TRUCKEE RV BLW DERBY DAM NR WADSWORTH, NV	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	316	1918–2026
TRUCKEE RV AT VISTA, NV	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	299	1899–2026
DONNER C A DONNER LK NR TRUCKEE CA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	281	1909–2026
LITTLE TRUCKEE R BL BOCA DAM NR TRUCKEE CA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	218	1890–2026
INDEPENDENCE C NR TRUCKEE CA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	209	1907–2026
TRUCKEE-CARSON TRUCKEE R A FARAD CA	burned area within 50 km, mean river flow, mean river flow, water year	175	1909–2019

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 — 16050102. 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
TRUCKEE R A FARAD CA	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
TRUCKEE R A TAHOE CITY CA	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
TRUCKEE RV AT RENO, NV	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
TRUCKEE RV BLW DERBY DAM NR WADSWORTH, NV	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
TRUCKEE RV AT VISTA, NV	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
DONNER C A DONNER LK NR TRUCKEE CA	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
LITTLE TRUCKEE R BL BOCA DAM NR TRUCKEE CA	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
INDEPENDENCE C NR TRUCKEE CA	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
TRUCKEE-CARSON TRUCKEE R A FARAD CA	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	9	yes, 3 or more
Years spanned	137	yes, 20 or more
Values held	6,532	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-10346000.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), Truckee gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-truckee/

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 Truckee 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 10346000, 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.