The monitoring network within this area

Hydrionis holds 1,733 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
1,733
Values held
1907–2026
Record spans
Gauges within the Two Medicine huc8 subbasin
2 monitoring points, positioned as the publisher records them.
Gauges within the Two Medicine huc8 subbasinTwo Medicine Creek near East Glacier MT, Two Medicine River near Browning MTTwo Medicine Creek near East Glacier MTTwo Medicine River near Browning MT

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 Two Medicine River near Browning MT
The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1907–1976.
Largest measured flow of each year at Two Medicine River near Browning MTLargest measured flow of each year at Two Medicine River near Browning MT: Two Medicine River near Browning MT in m³/s, from 1907 to 1976.01,0002,0003,000m³/s1907191519221954196019661972Two Medicine River near Browning MT 1907: 225 m³/sTwo Medicine River near Browning MT 1909: 215 m³/sTwo Medicine River near Browning MT 1910: 50.7 m³/sTwo Medicine River near Browning MT 1911: 117 m³/sTwo Medicine River near Browning MT 1912: 82.1 m³/sTwo Medicine River near Browning MT 1914: 46.4 m³/sTwo Medicine River near Browning MT 1915: 52.1 m³/sTwo Medicine River near Browning MT 1917: 146 m³/sTwo Medicine River near Browning MT 1918: 146 m³/sTwo Medicine River near Browning MT 1919: 57.5 m³/sTwo Medicine River near Browning MT 1920: 60.9 m³/sTwo Medicine River near Browning MT 1921: 65.7 m³/sTwo Medicine River near Browning MT 1922: 90.0 m³/sTwo Medicine River near Browning MT 1923: 66.3 m³/sTwo Medicine River near Browning MT 1924: 81.8 m³/sTwo Medicine River near Browning MT 1951: 131 m³/sTwo Medicine River near Browning MT 1952: 64.6 m³/sTwo Medicine River near Browning MT 1953: 185 m³/sTwo Medicine River near Browning MT 1954: 166 m³/sTwo Medicine River near Browning MT 1955: 73.3 m³/sTwo Medicine River near Browning MT 1956: 142 m³/sTwo Medicine River near Browning MT 1957: 112 m³/sTwo Medicine River near Browning MT 1958: 77.0 m³/sTwo Medicine River near Browning MT 1959: 112 m³/sTwo Medicine River near Browning MT 1960: 59.5 m³/sTwo Medicine River near Browning MT 1961: 94.9 m³/sTwo Medicine River near Browning MT 1962: 50.7 m³/sTwo Medicine River near Browning MT 1963: 43.6 m³/sTwo Medicine River near Browning MT 1964: 2,832 m³/sTwo Medicine River near Browning MT 1965: 113 m³/sTwo Medicine River near Browning MT 1966: 55.8 m³/sTwo Medicine River near Browning MT 1967: 168 m³/sTwo Medicine River near Browning MT 1968: 76.5 m³/sTwo Medicine River near Browning MT 1969: 99.1 m³/sTwo Medicine River near Browning MT 1970: 235 m³/sTwo Medicine River near Browning MT 1971: 110 m³/sTwo Medicine River near Browning MT 1972: 114 m³/sTwo Medicine River near Browning MT 1973: 54.1 m³/sTwo Medicine River near Browning MT 1974: 77.0 m³/sTwo Medicine River near Browning MT 1975: 2,110 m³/sTwo Medicine River near Browning MT 1976: 96.0 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
PeriodTwo Medicine River near Browning MT (m³/s)
1907225
1909215
191050.7
1911117
191282.1
191446.4
191552.1
1917146
1918146
191957.5
192060.9
192165.7
192290.0
192366.3
192481.8
1951131
195264.6
1953185
1954166
195573.3
1956142
1957112
195877.0
1959112
196059.5
196194.9
196250.7
196343.6
19642,832
1965113
196655.8
1967168
196876.5
196999.1
1970235
1971110
1972114
197354.1
197477.0
19752,110
197696.0

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 existMeasured
Period held1907–1976
Completeness58.6% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • 4 separate periods inside 1907–1976 hold no value. The longest runs from 1925 to 1950 — 26 years with no reading. They are drawn as breaks in the line and are never interpolated across.
ContinuityThe record begins in 1907 and is not continuous from it: 70 years separate the first value from the last, and 59% 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

The snow standing above this water

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

1,148
Fullest snowpack recorded at Pike Creek, in 1991 (mm of water)
77
Thinnest, in 2023 (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 Pike Creek
Water years 1977–2026. Each point is the fullest month of that snow season.
Peak snowpack at Pike CreekPeak snowpack at Pike Creek: Pike Creek in mm, from 1977 to 2026.05001,000mm19771984199119982005201220192026Pike Creek 1977: 348 mmPike Creek 1978: 692 mmPike Creek 1979: 853 mmPike Creek 1980: 595 mmPike Creek 1981: 496 mmPike Creek 1982: 1,014 mmPike Creek 1983: 653 mmPike Creek 1984: 439 mmPike Creek 1985: 721 mmPike Creek 1986: 530 mmPike Creek 1987: 596 mmPike Creek 1988: 538 mmPike Creek 1989: 672 mmPike Creek 1990: 820 mmPike Creek 1991: 1,148 mmPike Creek 1992: 558 mmPike Creek 1993: 579 mmPike Creek 1994: 568 mmPike Creek 1995: 514 mmPike Creek 1996: 773 mmPike Creek 1997: 1,102 mmPike Creek 1998: 448 mmPike Creek 1999: 883 mmPike Creek 2000: 565 mmPike Creek 2001: 451 mmPike Creek 2002: 844 mmPike Creek 2003: 526 mmPike Creek 2004: 517 mmPike Creek 2005: 362 mmPike Creek 2006: 684 mmPike Creek 2007: 522 mmPike Creek 2008: 750 mmPike Creek 2009: 447 mmPike Creek 2010: 220 mmPike Creek 2011: 641 mmPike Creek 2012: 304 mmPike Creek 2013: 214 mmPike Creek 2014: 271 mmPike Creek 2015: 96.0 mmPike Creek 2016: 137 mmPike Creek 2017: 225 mmPike Creek 2018: 336 mmPike Creek 2019: 105 mmPike Creek 2020: 158 mmPike Creek 2021: 109 mmPike Creek 2022: 132 mmPike Creek 2023: 77.0 mmPike Creek 2024: 92.0 mmPike Creek 2025: 127 mmPike Creek 2026: 122 mm

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
PeriodPike Creek (mm)
1977348
1978692
1979853
1980595
1981496
19821,014
1983653
1984439
1985721
1986530
1987596
1988538
1989672
1990820
19911,148
1992558
1993579
1994568
1995514
1996773
19971,102
1998448
1999883
2000565
2001451
2002844
2003526
2004517
2005362
2006684
2007522
2008750
2009447
2010220
2011641
2012304
2013214
2014271
201596.0
2016137
2017225
2018336
2019105
2020158
2021109
2022132
202377.0
202492.0
2025127
2026122

Every gauge Hydrionis holds within this area

Gauges within the Two Medicine and what each holds
GaugeMeasuresValuesRecord
Two Medicine River near Browning MTcatchment area, annual maximum river flow421907–2026
Two Medicine Creek near East Glacier MTcatchment area, annual maximum river flow101912–2026

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 — 10030201. 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
Two Medicine River near Browning MTStated 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
Two Medicine Creek near East Glacier MTStated 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.

Information-gain signals held for this water body
SignalHeldCounts
Gauges holding a real record0no
Years spanned120yes, 20 or more
Values held1,733yes, 1000 or more
Distinct measurements3yes, 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), Two Medicine gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-two-medicine/

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 Two Medicine 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 confidence1976-05-11

Source: USGS — National Water Information System, USGS site 06092000, 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.