HydrionisGlobal Water Intelligence
HUC8 subbasin

South Fork Clearwater

2 monitoring stations within this area in United States, holding 268 values between 1911 and 2026. A United States federal hydrologic unit at the eight-digit subbasin level — a drainage area, not a river. Many subbasins take the name of the largest river within them, and the gauges below are anywhere inside the area, including on tributaries.

United StatesHUC8 subbasin

The monitoring network within this area

Hydrionis holds 268 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
268
Values held
1911–2026
Record spans
Gauges within the South Fork Clearwater huc8 subbasin
2 monitoring points, positioned as the publisher records them.
Gauges within the South Fork Clearwater huc8 subbasinSF CLEARWATER RIVER AT STITES ID, SF CLEARWATER RIVER NR GRANGEVILLE IDSF CLEARWATER RIVER AT STITES IDSF CLEARWATER RIVER NR GRANGEVILLE ID

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 SF CLEARWATER RIVER AT STITES ID
The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1911–2023.
Shading marks when something was recorded, not what caused the line.
Largest measured flow of each year at SF CLEARWATER RIVER AT STITES IDLargest measured flow of each year at SF CLEARWATER RIVER AT STITES ID: SF CLEARWATER RIVER AT STITES ID in m³/s, from 1911 to 2023.Hurricane Katrina water and sanitation collapse0200400600m³/s19111970197819861994200220102018SF CLEARWATER RIVER AT STITES ID 1911: 146 m³/sSF CLEARWATER RIVER AT STITES ID 1912: 303 m³/sSF CLEARWATER RIVER AT STITES ID 1964: 496 m³/sSF CLEARWATER RIVER AT STITES ID 1965: 215 m³/sSF CLEARWATER RIVER AT STITES ID 1966: 104 m³/sSF CLEARWATER RIVER AT STITES ID 1967: 208 m³/sSF CLEARWATER RIVER AT STITES ID 1968: 119 m³/sSF CLEARWATER RIVER AT STITES ID 1969: 223 m³/sSF CLEARWATER RIVER AT STITES ID 1970: 197 m³/sSF CLEARWATER RIVER AT STITES ID 1971: 207 m³/sSF CLEARWATER RIVER AT STITES ID 1972: 242 m³/sSF CLEARWATER RIVER AT STITES ID 1973: 64.3 m³/sSF CLEARWATER RIVER AT STITES ID 1974: 191 m³/sSF CLEARWATER RIVER AT STITES ID 1975: 280 m³/sSF CLEARWATER RIVER AT STITES ID 1976: 275 m³/sSF CLEARWATER RIVER AT STITES ID 1977: 104 m³/sSF CLEARWATER RIVER AT STITES ID 1978: 260 m³/sSF CLEARWATER RIVER AT STITES ID 1979: 279 m³/sSF CLEARWATER RIVER AT STITES ID 1980: 200 m³/sSF CLEARWATER RIVER AT STITES ID 1981: 210 m³/sSF CLEARWATER RIVER AT STITES ID 1982: 177 m³/sSF CLEARWATER RIVER AT STITES ID 1983: 115 m³/sSF CLEARWATER RIVER AT STITES ID 1984: 263 m³/sSF CLEARWATER RIVER AT STITES ID 1985: 130 m³/sSF CLEARWATER RIVER AT STITES ID 1986: 155 m³/sSF CLEARWATER RIVER AT STITES ID 1987: 86.4 m³/sSF CLEARWATER RIVER AT STITES ID 1988: 143 m³/sSF CLEARWATER RIVER AT STITES ID 1989: 161 m³/sSF CLEARWATER RIVER AT STITES ID 1990: 259 m³/sSF CLEARWATER RIVER AT STITES ID 1991: 130 m³/sSF CLEARWATER RIVER AT STITES ID 1992: 46.2 m³/sSF CLEARWATER RIVER AT STITES ID 1993: 224 m³/sSF CLEARWATER RIVER AT STITES ID 1994: 97.7 m³/sSF CLEARWATER RIVER AT STITES ID 1995: 314 m³/sSF CLEARWATER RIVER AT STITES ID 1996: 343 m³/sSF CLEARWATER RIVER AT STITES ID 1997: 328 m³/sSF CLEARWATER RIVER AT STITES ID 1998: 223 m³/sSF CLEARWATER RIVER AT STITES ID 1999: 138 m³/sSF CLEARWATER RIVER AT STITES ID 2000: 102 m³/sSF CLEARWATER RIVER AT STITES ID 2001: 141 m³/sSF CLEARWATER RIVER AT STITES ID 2002: 141 m³/sSF CLEARWATER RIVER AT STITES ID 2003: 155 m³/sSF CLEARWATER RIVER AT STITES ID 2004: 212 m³/sSF CLEARWATER RIVER AT STITES ID 2005: 152 m³/sSF CLEARWATER RIVER AT STITES ID 2006: 117 m³/sSF CLEARWATER RIVER AT STITES ID 2007: 70.2 m³/sSF CLEARWATER RIVER AT STITES ID 2008: 209 m³/sSF CLEARWATER RIVER AT STITES ID 2009: 225 m³/sSF CLEARWATER RIVER AT STITES ID 2010: 236 m³/sSF CLEARWATER RIVER AT STITES ID 2011: 391 m³/sSF CLEARWATER RIVER AT STITES ID 2012: 160 m³/sSF CLEARWATER RIVER AT STITES ID 2013: 118 m³/sSF CLEARWATER RIVER AT STITES ID 2014: 130 m³/sSF CLEARWATER RIVER AT STITES ID 2015: 72.2 m³/sSF CLEARWATER RIVER AT STITES ID 2016: 140 m³/sSF CLEARWATER RIVER AT STITES ID 2017: 150 m³/sSF CLEARWATER RIVER AT STITES ID 2018: 227 m³/sSF CLEARWATER RIVER AT STITES ID 2019: 552 m³/sSF CLEARWATER RIVER AT STITES ID 2020: 212 m³/sSF CLEARWATER RIVER AT STITES ID 2021: 115 m³/sSF CLEARWATER RIVER AT STITES ID 2022: 348 m³/sSF CLEARWATER RIVER AT STITES ID 2023: 179 m³/s

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.

EventTypePeriodStandingAuthority
Hurricane Katrina water and sanitation collapseFlood2005-08-29 – 2005-09-30Documented 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
PeriodSF CLEARWATER RIVER AT STITES ID (m³/s)
1911146
1912303
1964496
1965215
1966104
1967208
1968119
1969223
1970197
1971207
1972242
197364.3
1974191
1975280
1976275
1977104
1978260
1979279
1980200
1981210
1982177
1983115
1984263
1985130
1986155
198786.4
1988143
1989161
1990259
1991130
199246.2
1993224
199497.7
1995314
1996343
1997328
1998223
1999138
2000102
2001141
2002141
2003155
2004212
2005152
2006117
200770.2
2008209
2009225
2010236
2011391
2012160
2013118
2014130
201572.2
2016140
2017150
2018227
2019552
2020212
2021115
2022348
2023179

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 existMeasured
Period held1911–2023
Completeness54.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • One period inside 1911–2023 holds no value: 1913 to 1963, 51 years with no reading. It is drawn as a break in the line and is never interpolated across.
ContinuityThe record begins in 1911 and is not continuous from it: 113 years separate the first value from the last, and 55% of the years between them are held. The span is not the record.
Last read from the publisher2026-10-01
RedistributionPermitted by the upstream licences
Commercial reusePermitted by the upstream licences. No Hydrionis access tier can widen this.
MethodologyHow 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 SF CLEARWATER RIVER AT STITES ID, as a depth
The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1965–2024.
Shading marks when something was recorded, not what caused the line.
Water leaving the catchment above SF CLEARWATER RIVER AT STITES ID, as a depthWater leaving the catchment above SF CLEARWATER RIVER AT STITES ID, as a depth: SF CLEARWATER RIVER AT STITES ID in mm, from 1965 to 2024.Hurricane Katrina water and sanitation collapse100200300400500mm19651973198119891997200520132021SF CLEARWATER RIVER AT STITES ID 1965: 415 mmSF CLEARWATER RIVER AT STITES ID 1966: 196 mmSF CLEARWATER RIVER AT STITES ID 1967: 293 mmSF CLEARWATER RIVER AT STITES ID 1968: 313 mmSF CLEARWATER RIVER AT STITES ID 1969: 341 mmSF CLEARWATER RIVER AT STITES ID 1970: 310 mmSF CLEARWATER RIVER AT STITES ID 1971: 390 mmSF CLEARWATER RIVER AT STITES ID 1972: 407 mmSF CLEARWATER RIVER AT STITES ID 1973: 143 mmSF CLEARWATER RIVER AT STITES ID 1974: 334 mmSF CLEARWATER RIVER AT STITES ID 1975: 479 mmSF CLEARWATER RIVER AT STITES ID 1976: 432 mmSF CLEARWATER RIVER AT STITES ID 1977: 222 mmSF CLEARWATER RIVER AT STITES ID 1978: 430 mmSF CLEARWATER RIVER AT STITES ID 1979: 271 mmSF CLEARWATER RIVER AT STITES ID 1980: 278 mmSF CLEARWATER RIVER AT STITES ID 1981: 299 mmSF CLEARWATER RIVER AT STITES ID 1982: 422 mmSF CLEARWATER RIVER AT STITES ID 1983: 248 mmSF CLEARWATER RIVER AT STITES ID 1984: 467 mmSF CLEARWATER RIVER AT STITES ID 1985: 225 mmSF CLEARWATER RIVER AT STITES ID 1986: 342 mmSF CLEARWATER RIVER AT STITES ID 1987: 160 mmSF CLEARWATER RIVER AT STITES ID 1988: 221 mmSF CLEARWATER RIVER AT STITES ID 1989: 266 mmSF CLEARWATER RIVER AT STITES ID 1990: 212 mmSF CLEARWATER RIVER AT STITES ID 1991: 240 mmSF CLEARWATER RIVER AT STITES ID 1992: 133 mmSF CLEARWATER RIVER AT STITES ID 1993: 326 mmSF CLEARWATER RIVER AT STITES ID 1994: 195 mmSF CLEARWATER RIVER AT STITES ID 1995: 351 mmSF CLEARWATER RIVER AT STITES ID 1996: 423 mmSF CLEARWATER RIVER AT STITES ID 1997: 429 mmSF CLEARWATER RIVER AT STITES ID 1998: 295 mmSF CLEARWATER RIVER AT STITES ID 1999: 297 mmSF CLEARWATER RIVER AT STITES ID 2000: 208 mmSF CLEARWATER RIVER AT STITES ID 2001: 225 mmSF CLEARWATER RIVER AT STITES ID 2002: 200 mmSF CLEARWATER RIVER AT STITES ID 2003: 280 mmSF CLEARWATER RIVER AT STITES ID 2004: 272 mmSF CLEARWATER RIVER AT STITES ID 2005: 190 mmSF CLEARWATER RIVER AT STITES ID 2006: 226 mmSF CLEARWATER RIVER AT STITES ID 2007: 169 mmSF CLEARWATER RIVER AT STITES ID 2008: 299 mmSF CLEARWATER RIVER AT STITES ID 2009: 334 mmSF CLEARWATER RIVER AT STITES ID 2010: 241 mmSF CLEARWATER RIVER AT STITES ID 2011: 442 mmSF CLEARWATER RIVER AT STITES ID 2012: 243 mmSF CLEARWATER RIVER AT STITES ID 2013: 189 mmSF CLEARWATER RIVER AT STITES ID 2014: 288 mmSF CLEARWATER RIVER AT STITES ID 2015: 191 mmSF CLEARWATER RIVER AT STITES ID 2016: 223 mmSF CLEARWATER RIVER AT STITES ID 2017: 304 mmSF CLEARWATER RIVER AT STITES ID 2018: 364 mmSF CLEARWATER RIVER AT STITES ID 2019: 317 mmSF CLEARWATER RIVER AT STITES ID 2020: 358 mmSF CLEARWATER RIVER AT STITES ID 2021: 217 mmSF CLEARWATER RIVER AT STITES ID 2022: 349 mmSF CLEARWATER RIVER AT STITES ID 2023: 273 mmSF CLEARWATER RIVER AT STITES ID 2024: 305 mm

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.

EventTypePeriodStandingAuthority
Hurricane Katrina water and sanitation collapseFlood2005-08-29 – 2005-09-30Documented 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
PeriodSF CLEARWATER RIVER AT STITES ID (mm)
1965415
1966196
1967293
1968313
1969341
1970310
1971390
1972407
1973143
1974334
1975479
1976432
1977222
1978430
1979271
1980278
1981299
1982422
1983248
1984467
1985225
1986342
1987160
1988221
1989266
1990212
1991240
1992133
1993326
1994195
1995351
1996423
1997429
1998295
1999297
2000208
2001225
2002200
2003280
2004272
2005190
2006226
2007169
2008299
2009334
2010241
2011442
2012243
2013189
2014288
2015191
2016223
2017304
2018364
2019317
2020358
2021217
2022349
2023273
2024305

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 existDerived Computed by Hydrionis
Period held1965–2024
Completeness100.0% of the periods in that span are held.
ContinuityContinuous: every year from 1965 to 2024 is held.
Inputs last read2026-10-01 · when the records this was computed from were last read from their publishers
Calculation date2026-08-24 · when the calculation method was last versioned, not a reading of any publisher
RedistributionPermitted by the upstream licences
Commercial reusePermitted by the upstream licences. No Hydrionis access tier can widen this.
MethodologyHow this was produced

Every gauge Hydrionis holds within this area

GaugeMeasuresValuesRecord
SF CLEARWATER RIVER AT STITES IDburned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year2201911–2026
SF CLEARWATER RIVER NR GRANGEVILLE IDcatchment area, annual maximum river flow481914–2026

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 — 17060305. 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.

GaugeEvidenceEstablished
SF CLEARWATER RIVER AT STITES IDStated 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/42026-10-02
SF CLEARWATER RIVER NR GRANGEVILLE IDStated 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/42026-10-02

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 3 of them, which makes it a full profile.

SignalHeldCounts
Gauges holding a real record1no
Years spanned116yes, 20 or more
Values held268no
Distinct measurements5yes, 2 or more
Publishers measuring it2yes, 2 or more
Official identifiers1recorded, not counted

Use this data

Use this data

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), South Fork Clearwater gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-south-fork-clearwater/

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 South Fork Clearwater 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 confidence2023-05-22

Source: USGS — National Water Information System, USGS site 13338500, 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.

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