The monitoring network within this area

Hydrionis holds 249 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
249
Values held
1914–2026
Record spans
Gauges within the Bear huc8 subbasin
2 monitoring points, positioned as the publisher records them.
Gauges within the Bear huc8 subbasinBEAR CREEK AT BISHOP,AL., BEAR CREEK AT REDBAY, ALBEAR CREEK AT BISHOP,AL.BEAR CREEK AT REDBAY, AL

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 BEAR CREEK AT BISHOP,AL.
The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1926–2022.
Shading marks when something was recorded, not what caused the line.
Largest measured flow of each year at BEAR CREEK AT BISHOP,AL.Largest measured flow of each year at BEAR CREEK AT BISHOP,AL.: BEAR CREEK AT BISHOP,AL. in m³/s, from 1926 to 2022.Hurricane Katrina water and sanitation collapse05001,0001,5002,000m³/s19261936194419511961196919782020BEAR CREEK AT BISHOP,AL. 1926: 1,133 m³/sBEAR CREEK AT BISHOP,AL. 1928: 447 m³/sBEAR CREEK AT BISHOP,AL. 1929: 1,034 m³/sBEAR CREEK AT BISHOP,AL. 1930: 311 m³/sBEAR CREEK AT BISHOP,AL. 1931: 184 m³/sBEAR CREEK AT BISHOP,AL. 1931: 464 m³/sBEAR CREEK AT BISHOP,AL. 1934: 481 m³/sBEAR CREEK AT BISHOP,AL. 1935: 272 m³/sBEAR CREEK AT BISHOP,AL. 1936: 396 m³/sBEAR CREEK AT BISHOP,AL. 1937: 306 m³/sBEAR CREEK AT BISHOP,AL. 1938: 249 m³/sBEAR CREEK AT BISHOP,AL. 1939: 501 m³/sBEAR CREEK AT BISHOP,AL. 1940: 244 m³/sBEAR CREEK AT BISHOP,AL. 1941: 200 m³/sBEAR CREEK AT BISHOP,AL. 1942: 348 m³/sBEAR CREEK AT BISHOP,AL. 1942: 225 m³/sBEAR CREEK AT BISHOP,AL. 1944: 821 m³/sBEAR CREEK AT BISHOP,AL. 1945: 558 m³/sBEAR CREEK AT BISHOP,AL. 1946: 708 m³/sBEAR CREEK AT BISHOP,AL. 1947: 430 m³/sBEAR CREEK AT BISHOP,AL. 1948: 991 m³/sBEAR CREEK AT BISHOP,AL. 1949: 864 m³/sBEAR CREEK AT BISHOP,AL. 1950: 816 m³/sBEAR CREEK AT BISHOP,AL. 1951: 765 m³/sBEAR CREEK AT BISHOP,AL. 1951: 340 m³/sBEAR CREEK AT BISHOP,AL. 1953: 399 m³/sBEAR CREEK AT BISHOP,AL. 1954: 439 m³/sBEAR CREEK AT BISHOP,AL. 1955: 1,133 m³/sBEAR CREEK AT BISHOP,AL. 1956: 314 m³/sBEAR CREEK AT BISHOP,AL. 1957: 818 m³/sBEAR CREEK AT BISHOP,AL. 1957: 541 m³/sBEAR CREEK AT BISHOP,AL. 1959: 187 m³/sBEAR CREEK AT BISHOP,AL. 1959: 368 m³/sBEAR CREEK AT BISHOP,AL. 1961: 268 m³/sBEAR CREEK AT BISHOP,AL. 1961: 705 m³/sBEAR CREEK AT BISHOP,AL. 1963: 691 m³/sBEAR CREEK AT BISHOP,AL. 1964: 646 m³/sBEAR CREEK AT BISHOP,AL. 1965: 413 m³/sBEAR CREEK AT BISHOP,AL. 1966: 210 m³/sBEAR CREEK AT BISHOP,AL. 1967: 408 m³/sBEAR CREEK AT BISHOP,AL. 1968: 394 m³/sBEAR CREEK AT BISHOP,AL. 1969: 391 m³/sBEAR CREEK AT BISHOP,AL. 1969: 770 m³/sBEAR CREEK AT BISHOP,AL. 1971: 459 m³/sBEAR CREEK AT BISHOP,AL. 1972: 297 m³/sBEAR CREEK AT BISHOP,AL. 1973: 1,722 m³/sBEAR CREEK AT BISHOP,AL. 1974: 513 m³/sBEAR CREEK AT BISHOP,AL. 1975: 883 m³/sBEAR CREEK AT BISHOP,AL. 1975: 368 m³/sBEAR CREEK AT BISHOP,AL. 1977: 501 m³/sBEAR CREEK AT BISHOP,AL. 1978: 513 m³/sBEAR CREEK AT BISHOP,AL. 1979: 286 m³/sBEAR CREEK AT BISHOP,AL. 2014: 163 m³/sBEAR CREEK AT BISHOP,AL. 2014: 286 m³/sBEAR CREEK AT BISHOP,AL. 2015: 343 m³/sBEAR CREEK AT BISHOP,AL. 2017: 127 m³/sBEAR CREEK AT BISHOP,AL. 2018: 289 m³/sBEAR CREEK AT BISHOP,AL. 2019: 586 m³/sBEAR CREEK AT BISHOP,AL. 2020: 357 m³/sBEAR CREEK AT BISHOP,AL. 2021: 294 m³/sBEAR CREEK AT BISHOP,AL. 2022: 213 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
PeriodBEAR CREEK AT BISHOP,AL. (m³/s)
19261,133
1928447
19291,034
1930311
1931184
1934481
1935272
1936396
1937306
1938249
1939501
1940244
1941200
1942348
1944821
1945558
1946708
1947430
1948991
1949864
1950816
1951765
1953399
1954439
19551,133
1956314
1957818
1959187
1961268
1963691
1964646
1965413
1966210
1967408
1968394
1969391
1971459
1972297
19731,722
1974513
1975883
1977501
1978513
1979286
2014163
2015343
2017127
2018289
2019586
2020357
2021294
2022213

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 held1926–2022
Completeness53.6% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • 11 separate periods inside 1926–2022 hold no value. The longest runs from 1980 to 2013 — 34 years with no reading. They are drawn as breaks in the line and are never interpolated across.
ContinuityThe record begins in 1926 and is not continuous from it: 97 years separate the first value from the last, and 54% 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 BEAR CREEK AT BISHOP,AL., as a depth
The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1927–2023.
Shading marks when something was recorded, not what caused the line.
Water leaving the catchment above BEAR CREEK AT BISHOP,AL., as a depthWater leaving the catchment above BEAR CREEK AT BISHOP,AL., as a depth: BEAR CREEK AT BISHOP,AL. in mm, from 1927 to 2023.Hurricane Katrina water and sanitation collapse2505007501,000mm19271939194719551963197120152023BEAR CREEK AT BISHOP,AL. 1927: 531 mmBEAR CREEK AT BISHOP,AL. 1930: 331 mmBEAR CREEK AT BISHOP,AL. 1931: 435 mmBEAR CREEK AT BISHOP,AL. 1934: 409 mmBEAR CREEK AT BISHOP,AL. 1935: 547 mmBEAR CREEK AT BISHOP,AL. 1936: 516 mmBEAR CREEK AT BISHOP,AL. 1937: 548 mmBEAR CREEK AT BISHOP,AL. 1938: 531 mmBEAR CREEK AT BISHOP,AL. 1939: 791 mmBEAR CREEK AT BISHOP,AL. 1940: 476 mmBEAR CREEK AT BISHOP,AL. 1941: 287 mmBEAR CREEK AT BISHOP,AL. 1942: 335 mmBEAR CREEK AT BISHOP,AL. 1943: 224 mmBEAR CREEK AT BISHOP,AL. 1944: 572 mmBEAR CREEK AT BISHOP,AL. 1945: 607 mmBEAR CREEK AT BISHOP,AL. 1946: 758 mmBEAR CREEK AT BISHOP,AL. 1947: 583 mmBEAR CREEK AT BISHOP,AL. 1948: 744 mmBEAR CREEK AT BISHOP,AL. 1949: 702 mmBEAR CREEK AT BISHOP,AL. 1950: 922 mmBEAR CREEK AT BISHOP,AL. 1951: 838 mmBEAR CREEK AT BISHOP,AL. 1952: 373 mmBEAR CREEK AT BISHOP,AL. 1953: 523 mmBEAR CREEK AT BISHOP,AL. 1954: 344 mmBEAR CREEK AT BISHOP,AL. 1955: 554 mmBEAR CREEK AT BISHOP,AL. 1956: 500 mmBEAR CREEK AT BISHOP,AL. 1957: 745 mmBEAR CREEK AT BISHOP,AL. 1958: 541 mmBEAR CREEK AT BISHOP,AL. 1959: 465 mmBEAR CREEK AT BISHOP,AL. 1960: 532 mmBEAR CREEK AT BISHOP,AL. 1961: 746 mmBEAR CREEK AT BISHOP,AL. 1962: 700 mmBEAR CREEK AT BISHOP,AL. 1963: 481 mmBEAR CREEK AT BISHOP,AL. 1964: 674 mmBEAR CREEK AT BISHOP,AL. 1965: 420 mmBEAR CREEK AT BISHOP,AL. 1966: 338 mmBEAR CREEK AT BISHOP,AL. 1967: 541 mmBEAR CREEK AT BISHOP,AL. 1968: 552 mmBEAR CREEK AT BISHOP,AL. 1969: 599 mmBEAR CREEK AT BISHOP,AL. 1970: 676 mmBEAR CREEK AT BISHOP,AL. 1971: 654 mmBEAR CREEK AT BISHOP,AL. 1972: 609 mmBEAR CREEK AT BISHOP,AL. 1973: 960 mmBEAR CREEK AT BISHOP,AL. 1974: 915 mmBEAR CREEK AT BISHOP,AL. 1975: 1,077 mmBEAR CREEK AT BISHOP,AL. 1976: 508 mmBEAR CREEK AT BISHOP,AL. 1977: 659 mmBEAR CREEK AT BISHOP,AL. 1978: 447 mmBEAR CREEK AT BISHOP,AL. 2015: 644 mmBEAR CREEK AT BISHOP,AL. 2016: 440 mmBEAR CREEK AT BISHOP,AL. 2017: 457 mmBEAR CREEK AT BISHOP,AL. 2018: 669 mmBEAR CREEK AT BISHOP,AL. 2019: 873 mmBEAR CREEK AT BISHOP,AL. 2020: 1,088 mmBEAR CREEK AT BISHOP,AL. 2021: 762 mmBEAR CREEK AT BISHOP,AL. 2022: 663 mmBEAR CREEK AT BISHOP,AL. 2023: 523 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
PeriodBEAR CREEK AT BISHOP,AL. (mm)
1927531
1930331
1931435
1934409
1935547
1936516
1937548
1938531
1939791
1940476
1941287
1942335
1943224
1944572
1945607
1946758
1947583
1948744
1949702
1950922
1951838
1952373
1953523
1954344
1955554
1956500
1957745
1958541
1959465
1960532
1961746
1962700
1963481
1964674
1965420
1966338
1967541
1968552
1969599
1970676
1971654
1972609
1973960
1974915
19751,077
1976508
1977659
1978447
2015644
2016440
2017457
2018669
2019873
20201,088
2021762
2022663
2023523

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 held1927–2023
Completeness58.8% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • 3 separate periods inside 1927–2023 hold no value. The longest runs from 1979 to 2014 — 36 years with no reading. They are drawn as breaks in the line and are never interpolated across.
ContinuityThe record begins in 1927 and is not continuous from it: 97 years separate the first value from the last, and 59% of the years between them are held. The span is not the record.
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

Gauges within the Bear and what each holds
GaugeMeasuresValuesRecord
BEAR CREEK AT BISHOP,AL.burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year2121926–2026
BEAR CREEK AT REDBAY, ALcatchment area, annual maximum river flow371914–2026

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 — 06030006. 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
BEAR CREEK AT BISHOP,AL.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/42026-10-02
BEAR CREEK AT REDBAY, ALStated 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 record1no
Years spanned113yes, 20 or more
Values held249no
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), Bear gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-bear/

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 Bear 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 confidence2022-02-23

Source: USGS — National Water Information System, USGS site 03592500, 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.