The monitoring network within this area

Hydrionis holds 714 values from 4 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.

Gauges

714

Values held

1885–2026

Record spans

Gauges within the Middle Brazos-Lake Whitney huc8 subbasin

4 monitoring points, positioned as the publisher records them.

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 Brazos Rv at Waco, TX

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1885–2025.

Show relevant events (1 event)Shading marks when something was recorded, not what caused the line.

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.

Event	Type	Period	Standing	Authority
Hurricane Katrina water and sanitation collapse	Flood	2005-08-29 – 2005-09-30	Documented 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
Period	Brazos Rv at Waco, TX (m³/s)
1885	0
1899	3,313
1900	1,977
1913	5,975
1915	2,076
1916	3,200
1918	850
1919	2,212
1921	881
1922	3,455
1923	1,894
1925	1,396
1926	1,147
1927	1,756
1928	702
1929	886
1930	2,118
1932	1,770
1933	1,164
1934	1,286
1935	3,171
1936	6,966
1938	2,503
1939	1,232
1940	1,090
1941	1,948
1942	3,568
1944	3,879
1945	4,078
1946	1,065
1948	1,042
1949	2,022
1950	473
1951	518
1952	722
1953	1,730
1954	640
1955	668
1956	1,305
1957	2,860
1958	1,999
1959	300
1961	1,778
1962	462
1964	1,402
1965	1,297
1966	954
1967	532
1968	1,104
1969	1,093
1970	428
1971	204
1973	906
1974	1,133
1976	671
1977	954
1978	119
1979	558
1980	340
1981	968
1982	773
1983	343
1984	377
1986	510
1987	742
1989	714
1990	1,155
1991	530
1993	328
1994	320
1995	858
1996	271
1997	1,076
1998	1,022
2000	541
2001	759
2002	306
2004	623
2005	241
2007	1,130
2008	462
2009	261
2010	813
2012	838
2013	217
2015	872
2017	784
2018	130
2020	866
2021	767
2023	124
2024	1,028
2025	787

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 exist	Measured
Period held	1885–2025
Completeness	66.0% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	25 separate periods inside 1885–2025 hold no value. The longest runs from 1886 to 1898 — 13 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1885 and is not continuous from it: 141 years separate the first value from the last, and 66% of the years between them are held. The span is not the record.
Last read from the publisher	2026-10-01
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How 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 Brazos Rv at Waco, TX, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1941–2025.

Show relevant events (1 event)Shading marks when something was recorded, not what caused the line.

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.

Event	Type	Period	Standing	Authority
Hurricane Katrina water and sanitation collapse	Flood	2005-08-29 – 2005-09-30	Documented 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
Period	Brazos Rv at Waco, TX (mm)
1941	118
1942	91.0
1943	18.0
1944	35.0
1945	67.0
1946	43.0
1947	32.0
1948	18.0
1949	37.0
1950	29.0
1951	15.0
1952	10.0
1953	10.0
1954	18.0
1955	34.0
1956	15.0
1957	147
1958	44.0
1959	37.0
1960	35.0
1961	63.0
1962	39.0
1963	16.0
1964	14.0
1965	40.0
1966	51.0
1967	15.0
1968	72.0
1969	46.0
1970	31.0
1971	25.0
1972	19.0
1973	46.0
1974	32.0
1975	41.0
1976	25.0
1977	44.0
1978	8.00
1979	35.0
1980	13.0
1981	47.0
1982	56.0
1983	10.0
1984	9.00
1985	28.0
1986	40.0
1987	51.0
1988	8.00
1989	47.0
1990	83.0
1991	66.0
1992	132
1993	28.0
1994	30.0
1995	65.0
1996	19.0
1997	90.0
1998	39.0
1999	7.00
2000	9.00
2001	49.0
2002	21.0
2003	11.0
2004	50.0
2005	26.0
2006	5.00
2007	108
2008	16.0
2009	19.0
2010	51.0
2011	5.00
2012	19.0
2013	4.00
2014	3.00
2015	93.0
2016	102
2017	19.0
2018	58.0
2019	84.0
2020	29.0
2021	46.0
2022	4.00
2023	4.00
2024	51.0
2025	36.0

About this series

Source	United States Geological Survey — National Water Information System · US Government work — public domain
How the values came to exist	Derived Computed by Hydrionis
Period held	1941–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1941 to 2025 is held.
Inputs last read	2026-10-01 · when the records this was computed from were last read from their publishers
Calculation date	2026-08-24 · when the calculation method was last versioned, not a reading of any publisher
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced

Every gauge Hydrionis holds within this area

Gauges within the Middle Brazos-Lake Whitney and what each holds
Gauge	Measures	Values	Record
Brazos Rv at Waco, TX	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	286	1885–2026
Brazos Rv nr Glen Rose, TX	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	268	1923–2026
Paluxy Rv at Glen Rose, TX	catchment area, annual maximum river flow	81	1908–2026
Nolan Rv at Blum, TX	catchment area, annual maximum river flow	79	1925–2026

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 — 12060202. 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
Gauge	Evidence	Established
Brazos Rv at Waco, TX	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/4	2026-10-02
Brazos Rv nr Glen Rose, TX	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/4	2026-10-02
Paluxy Rv at Glen Rose, TX	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/4	2026-10-02
Nolan Rv at Blum, TX	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/4	2026-10-02

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
Signal	Held	Counts
Gauges holding a real record	4	yes, 3 or more
Years spanned	142	yes, 20 or more
Values held	714	no
Distinct measurements	4	yes, 2 or more
Publishers measuring it	1	no
Official identifiers	1	recorded, not counted

Use this data

Machine-readable JSON /api/v1/observations/by-subject/gauge-usgs-08096500.json
How to cite this, and who you must credit
How these figures were produced
Request this at a different scale, format or geography

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 Brazos-Lake Whitney gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-middle-brazos-lake-whitney/

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 Brazos-Lake Whitney 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 confidence2025-06-12

Source: USGS — National Water Information System, USGS site 08096500, 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.