The monitoring network within this area

Hydrionis holds 39 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
39
Values held
1912–2026
Record spans
Gauges within the Smith huc8 subbasin
2 monitoring points, positioned as the publisher records them.
Gauges within the Smith huc8 subbasinMF SMITH R A GASQUET CA, SF SMITH R NR CRESCENT CITY CAMF SMITH R A GASQUET CASF SMITH R NR CRESCENT CITY CA

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 SMITH R NR CRESCENT CITY CA
The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1954–1979.
Largest measured flow of each year at SF SMITH R NR CRESCENT CITY CALargest measured flow of each year at SF SMITH R NR CRESCENT CITY CA: SF SMITH R NR CRESCENT CITY CA in m³/s, from 1954 to 1979.02,0004,000m³/s195419581961196619711975SF SMITH R NR CRESCENT CITY CA 1954: 963 m³/sSF SMITH R NR CRESCENT CITY CA 1955: 3,058 m³/sSF SMITH R NR CRESCENT CITY CA 1957: 954 m³/sSF SMITH R NR CRESCENT CITY CA 1958: 1,455 m³/sSF SMITH R NR CRESCENT CITY CA 1959: 1,393 m³/sSF SMITH R NR CRESCENT CITY CA 1960: 1,181 m³/sSF SMITH R NR CRESCENT CITY CA 1960: 960 m³/sSF SMITH R NR CRESCENT CITY CA 1961: 932 m³/sSF SMITH R NR CRESCENT CITY CA 1962: 1,858 m³/sSF SMITH R NR CRESCENT CITY CA 1964: 1,308 m³/sSF SMITH R NR CRESCENT CITY CA 1964: 4,587 m³/sSF SMITH R NR CRESCENT CITY CA 1966: 2,376 m³/sSF SMITH R NR CRESCENT CITY CA 1967: 569 m³/sSF SMITH R NR CRESCENT CITY CA 1968: 597 m³/sSF SMITH R NR CRESCENT CITY CA 1971: 1,651 m³/sSF SMITH R NR CRESCENT CITY CA 1972: 2,526 m³/sSF SMITH R NR CRESCENT CITY CA 1972: 671 m³/sSF SMITH R NR CRESCENT CITY CA 1973: 1,447 m³/sSF SMITH R NR CRESCENT CITY CA 1975: 1,945 m³/sSF SMITH R NR CRESCENT CITY CA 1978: 239 m³/sSF SMITH R NR CRESCENT CITY CA 1979: 804 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 (0 events)

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 SMITH R NR CRESCENT CITY CA (m³/s)
1954963
19553,058
1957954
19581,455
19591,393
19601,181
1961932
19621,858
19641,308
19662,376
1967569
1968597
19711,651
19722,526
19731,447
19751,945
1978239
1979804

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 held1954–1979
Completeness69.2% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • 6 separate periods inside 1954–1979 hold no value. The longest runs from 1969 to 1970 — 2 years with no reading. They are drawn as breaks in the line and are never interpolated across.
ContinuityThe record begins in 1954 and is not continuous from it: 26 years separate the first value from the last, and 69% 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

Every gauge Hydrionis holds within this area

Gauges within the Smith and what each holds
GaugeMeasuresValuesRecord
SF SMITH R NR CRESCENT CITY CAcatchment area, annual maximum river flow221954–2026
MF SMITH R A GASQUET CAcatchment area, annual maximum river flow171912–2026

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 — 18010101. 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
GaugeEvidenceEstablished
SF SMITH R NR CRESCENT CITY CAStated 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
MF SMITH R A GASQUET CAStated 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 2 of them, which makes it a profile, not indexed.

Information-gain signals held for this water body
SignalHeldCounts
Gauges holding a real record0no
Years spanned115yes, 20 or more
Values held39no
Distinct measurements2yes, 2 or more
Publishers measuring it1no
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), Smith gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-smith/

Cite Hydrionis where you rely on the compilation, the normalisation, the eligibility judgements or a chart. Where you use an unmodified published value, the publisher’s attribution is the one that is required; crediting Hydrionis as well is welcome and is not something Hydrionis can require of you.

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 Smith 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 confidence1979-01-11

Source: USGS — National Water Information System, USGS site 11532000, 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.