HydrionisGlobal Water Intelligence
HUC8 subbasin

Middle Coosa

2 monitoring stations within this area in United States, holding 257 values between 1900 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 257 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
257
Values held
1900–2026
Record spans
Gauges within the Middle Coosa huc8 subbasin
2 monitoring points, positioned as the publisher records them.
Gauges within the Middle Coosa huc8 subbasinTALLADEGA CREEK AT ALPINE AL, CHOCCOLOCCO CREEK NEAR JENIFER ALTALLADEGA CREEK AT ALPINE ALCHOCCOLOCCO CREEK NEAR JENIFER 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 TALLADEGA CREEK AT ALPINE AL
The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1939–2025.
Shading marks when something was recorded, not what caused the line.
Largest measured flow of each year at TALLADEGA CREEK AT ALPINE ALLargest measured flow of each year at TALLADEGA CREEK AT ALPINE AL: TALLADEGA CREEK AT ALPINE AL in m³/s, from 1939 to 2025.Hurricane Katrina water and sanitation collapse05001,000m³/s19391947195719661990200020092018TALLADEGA CREEK AT ALPINE AL 1939: 106 m³/sTALLADEGA CREEK AT ALPINE AL 1940: 156 m³/sTALLADEGA CREEK AT ALPINE AL 1941: 60.6 m³/sTALLADEGA CREEK AT ALPINE AL 1942: 481 m³/sTALLADEGA CREEK AT ALPINE AL 1943: 184 m³/sTALLADEGA CREEK AT ALPINE AL 1944: 98.0 m³/sTALLADEGA CREEK AT ALPINE AL 1945: 89.5 m³/sTALLADEGA CREEK AT ALPINE AL 1946: 425 m³/sTALLADEGA CREEK AT ALPINE AL 1947: 416 m³/sTALLADEGA CREEK AT ALPINE AL 1948: 204 m³/sTALLADEGA CREEK AT ALPINE AL 1948: 255 m³/sTALLADEGA CREEK AT ALPINE AL 1950: 62.3 m³/sTALLADEGA CREEK AT ALPINE AL 1951: 1,104 m³/sTALLADEGA CREEK AT ALPINE AL 1951: 170 m³/sTALLADEGA CREEK AT ALPINE AL 1953: 87.2 m³/sTALLADEGA CREEK AT ALPINE AL 1954: 27.8 m³/sTALLADEGA CREEK AT ALPINE AL 1955: 286 m³/sTALLADEGA CREEK AT ALPINE AL 1956: 343 m³/sTALLADEGA CREEK AT ALPINE AL 1957: 360 m³/sTALLADEGA CREEK AT ALPINE AL 1958: 167 m³/sTALLADEGA CREEK AT ALPINE AL 1959: 41.9 m³/sTALLADEGA CREEK AT ALPINE AL 1960: 39.9 m³/sTALLADEGA CREEK AT ALPINE AL 1961: 345 m³/sTALLADEGA CREEK AT ALPINE AL 1961: 238 m³/sTALLADEGA CREEK AT ALPINE AL 1963: 235 m³/sTALLADEGA CREEK AT ALPINE AL 1964: 236 m³/sTALLADEGA CREEK AT ALPINE AL 1965: 65.1 m³/sTALLADEGA CREEK AT ALPINE AL 1966: 144 m³/sTALLADEGA CREEK AT ALPINE AL 1967: 77.9 m³/sTALLADEGA CREEK AT ALPINE AL 1968: 207 m³/sTALLADEGA CREEK AT ALPINE AL 1969: 45.6 m³/sTALLADEGA CREEK AT ALPINE AL 1970: 419 m³/sTALLADEGA CREEK AT ALPINE AL 1979: 408 m³/sTALLADEGA CREEK AT ALPINE AL 1988: 92.0 m³/sTALLADEGA CREEK AT ALPINE AL 1989: 96.6 m³/sTALLADEGA CREEK AT ALPINE AL 1990: 368 m³/sTALLADEGA CREEK AT ALPINE AL 1991: 116 m³/sTALLADEGA CREEK AT ALPINE AL 1992: 50.7 m³/sTALLADEGA CREEK AT ALPINE AL 1992: 114 m³/sTALLADEGA CREEK AT ALPINE AL 1994: 96.3 m³/sTALLADEGA CREEK AT ALPINE AL 1995: 282 m³/sTALLADEGA CREEK AT ALPINE AL 1995: 286 m³/sTALLADEGA CREEK AT ALPINE AL 1997: 186 m³/sTALLADEGA CREEK AT ALPINE AL 1998: 139 m³/sTALLADEGA CREEK AT ALPINE AL 1999: 41.6 m³/sTALLADEGA CREEK AT ALPINE AL 2000: 166 m³/sTALLADEGA CREEK AT ALPINE AL 2001: 282 m³/sTALLADEGA CREEK AT ALPINE AL 2002: 96.3 m³/sTALLADEGA CREEK AT ALPINE AL 2003: 433 m³/sTALLADEGA CREEK AT ALPINE AL 2004: 151 m³/sTALLADEGA CREEK AT ALPINE AL 2005: 79.3 m³/sTALLADEGA CREEK AT ALPINE AL 2006: 79.6 m³/sTALLADEGA CREEK AT ALPINE AL 2006: 64.8 m³/sTALLADEGA CREEK AT ALPINE AL 2008: 58.0 m³/sTALLADEGA CREEK AT ALPINE AL 2009: 85.8 m³/sTALLADEGA CREEK AT ALPINE AL 2010: 245 m³/sTALLADEGA CREEK AT ALPINE AL 2011: 185 m³/sTALLADEGA CREEK AT ALPINE AL 2012: 79.9 m³/sTALLADEGA CREEK AT ALPINE AL 2013: 127 m³/sTALLADEGA CREEK AT ALPINE AL 2014: 279 m³/sTALLADEGA CREEK AT ALPINE AL 2015: 176 m³/sTALLADEGA CREEK AT ALPINE AL 2015: 266 m³/sTALLADEGA CREEK AT ALPINE AL 2017: 130 m³/sTALLADEGA CREEK AT ALPINE AL 2018: 116 m³/sTALLADEGA CREEK AT ALPINE AL 2019: 98.8 m³/sTALLADEGA CREEK AT ALPINE AL 2020: 209 m³/sTALLADEGA CREEK AT ALPINE AL 2021: 178 m³/sTALLADEGA CREEK AT ALPINE AL 2022: 320 m³/sTALLADEGA CREEK AT ALPINE AL 2023: 104 m³/sTALLADEGA CREEK AT ALPINE AL 2024: 80.4 m³/sTALLADEGA CREEK AT ALPINE AL 2025: 445 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
PeriodTALLADEGA CREEK AT ALPINE AL (m³/s)
1939106
1940156
194160.6
1942481
1943184
194498.0
194589.5
1946425
1947416
1948204
195062.3
19511,104
195387.2
195427.8
1955286
1956343
1957360
1958167
195941.9
196039.9
1961345
1963235
1964236
196565.1
1966144
196777.9
1968207
196945.6
1970419
1979408
198892.0
198996.6
1990368
1991116
199250.7
199496.3
1995282
1997186
1998139
199941.6
2000166
2001282
200296.3
2003433
2004151
200579.3
200679.6
200858.0
200985.8
2010245
2011185
201279.9
2013127
2014279
2015176
2017130
2018116
201998.8
2020209
2021178
2022320
2023104
202480.4
2025445

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 held1939–2025
Completeness73.6% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • 9 separate periods inside 1939–2025 hold no value. The longest runs from 1971 to 1978 — 8 years with no reading. They are drawn as breaks in the line and are never interpolated across.
ContinuityThe record begins in 1939 and is not continuous from it: 87 years separate the first value from the last, and 74% 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 TALLADEGA CREEK AT ALPINE 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. 1901–2024.
Shading marks when something was recorded, not what caused the line.
Water leaving the catchment above TALLADEGA CREEK AT ALPINE AL, as a depthWater leaving the catchment above TALLADEGA CREEK AT ALPINE AL, as a depth: TALLADEGA CREEK AT ALPINE AL in mm, from 1901 to 2024.Hurricane Katrina water and sanitation collapse2004006008001,000mm19011943195019942001200820152022TALLADEGA CREEK AT ALPINE AL 1901: 645 mmTALLADEGA CREEK AT ALPINE AL 1902: 570 mmTALLADEGA CREEK AT ALPINE AL 1903: 637 mmTALLADEGA CREEK AT ALPINE AL 1904: 262 mmTALLADEGA CREEK AT ALPINE AL 1940: 485 mmTALLADEGA CREEK AT ALPINE AL 1941: 379 mmTALLADEGA CREEK AT ALPINE AL 1942: 502 mmTALLADEGA CREEK AT ALPINE AL 1943: 520 mmTALLADEGA CREEK AT ALPINE AL 1944: 555 mmTALLADEGA CREEK AT ALPINE AL 1945: 467 mmTALLADEGA CREEK AT ALPINE AL 1946: 714 mmTALLADEGA CREEK AT ALPINE AL 1947: 628 mmTALLADEGA CREEK AT ALPINE AL 1948: 776 mmTALLADEGA CREEK AT ALPINE AL 1949: 664 mmTALLADEGA CREEK AT ALPINE AL 1950: 419 mmTALLADEGA CREEK AT ALPINE AL 1988: 336 mmTALLADEGA CREEK AT ALPINE AL 1989: 648 mmTALLADEGA CREEK AT ALPINE AL 1990: 663 mmTALLADEGA CREEK AT ALPINE AL 1991: 519 mmTALLADEGA CREEK AT ALPINE AL 1992: 598 mmTALLADEGA CREEK AT ALPINE AL 1993: 524 mmTALLADEGA CREEK AT ALPINE AL 1994: 503 mmTALLADEGA CREEK AT ALPINE AL 1995: 789 mmTALLADEGA CREEK AT ALPINE AL 1996: 770 mmTALLADEGA CREEK AT ALPINE AL 1997: 645 mmTALLADEGA CREEK AT ALPINE AL 1998: 634 mmTALLADEGA CREEK AT ALPINE AL 1999: 309 mmTALLADEGA CREEK AT ALPINE AL 2000: 293 mmTALLADEGA CREEK AT ALPINE AL 2001: 562 mmTALLADEGA CREEK AT ALPINE AL 2002: 498 mmTALLADEGA CREEK AT ALPINE AL 2003: 958 mmTALLADEGA CREEK AT ALPINE AL 2004: 496 mmTALLADEGA CREEK AT ALPINE AL 2005: 505 mmTALLADEGA CREEK AT ALPINE AL 2006: 393 mmTALLADEGA CREEK AT ALPINE AL 2007: 200 mmTALLADEGA CREEK AT ALPINE AL 2008: 301 mmTALLADEGA CREEK AT ALPINE AL 2009: 706 mmTALLADEGA CREEK AT ALPINE AL 2010: 579 mmTALLADEGA CREEK AT ALPINE AL 2011: 362 mmTALLADEGA CREEK AT ALPINE AL 2012: 285 mmTALLADEGA CREEK AT ALPINE AL 2013: 847 mmTALLADEGA CREEK AT ALPINE AL 2014: 628 mmTALLADEGA CREEK AT ALPINE AL 2015: 655 mmTALLADEGA CREEK AT ALPINE AL 2016: 470 mmTALLADEGA CREEK AT ALPINE AL 2017: 599 mmTALLADEGA CREEK AT ALPINE AL 2018: 556 mmTALLADEGA CREEK AT ALPINE AL 2019: 597 mmTALLADEGA CREEK AT ALPINE AL 2020: 924 mmTALLADEGA CREEK AT ALPINE AL 2021: 573 mmTALLADEGA CREEK AT ALPINE AL 2022: 668 mmTALLADEGA CREEK AT ALPINE AL 2023: 588 mmTALLADEGA CREEK AT ALPINE AL 2024: 337 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
PeriodTALLADEGA CREEK AT ALPINE AL (mm)
1901645
1902570
1903637
1904262
1940485
1941379
1942502
1943520
1944555
1945467
1946714
1947628
1948776
1949664
1950419
1988336
1989648
1990663
1991519
1992598
1993524
1994503
1995789
1996770
1997645
1998634
1999309
2000293
2001562
2002498
2003958
2004496
2005505
2006393
2007200
2008301
2009706
2010579
2011362
2012285
2013847
2014628
2015655
2016470
2017599
2018556
2019597
2020924
2021573
2022668
2023588
2024337

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 held1901–2024
Completeness41.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps
  • 2 separate periods inside 1901–2024 hold no value. The longest runs from 1951 to 1987 — 37 years with no reading. They are drawn as breaks in the line and are never interpolated across.
ContinuityThe record begins in 1901 and is not continuous from it: 124 years separate the first value from the last, and 42% 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

GaugeMeasuresValuesRecord
TALLADEGA CREEK AT ALPINE ALburned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year2131900–2026
CHOCCOLOCCO CREEK NEAR JENIFER ALcatchment area, annual maximum river flow441904–2026

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 — 03150106. 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
TALLADEGA CREEK AT ALPINE 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
CHOCCOLOCCO CREEK NEAR JENIFER 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.

SignalHeldCounts
Gauges holding a real record1no
Years spanned127yes, 20 or more
Values held257no
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), Middle Coosa gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-middle-coosa/

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 Middle Coosa 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 confidence2025-03-16

Source: USGS — National Water Information System, USGS site 02406500, 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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