The monitoring network within this area

Hydrionis holds 640 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.

Gauges

640

Values held

1906–2026

Record spans

Gauges within the Upper Suwannee huc8 subbasin

2 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 SUWANNEE RIVER AT US 441, AT FARGO, GA

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1928–2025.

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	SUWANNEE RIVER AT US 441, AT FARGO, GA (m³/s)
1928	148
1929	337
1930	69.7
1937	125
1939	70.5
1940	58.3
1941	22.9
1942	225
1944	121
1945	274
1946	168
1947	174
1949	167
1950	43.9
1951	122
1953	92.9
1955	48.4
1956	27.2
1957	72.2
1958	125
1959	246
1960	119
1961	201
1962	128
1963	108
1964	281
1965	164
1966	205
1967	100
1968	15.0
1969	74.5
1970	166
1971	137
1972	169
1973	374
1974	70.2
1975	188
1976	90.3
1978	90.6
1979	69.4
1980	89.5
1981	48.1
1982	32.3
1983	147
1984	297
1985	81.3
1986	179
1987	171
1988	119
1990	67.7
1991	203
1992	74.5
1993	113
1994	146
1996	77.0
1997	83.8
1998	283
2000	7.28
2001	26.1
2002	24.8
2003	170
2004	58.0
2006	90.6
2007	14.1
2008	105
2009	118
2010	86.1
2011	3.94
2012	108
2013	116
2014	191
2015	86.6
2016	28.0
2017	132
2018	73.1
2020	126
2021	186
2022	92.0
2023	41.6
2024	155
2025	89.5

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	1928–2025
Completeness	82.7% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	12 separate periods inside 1928–2025 hold no value. The longest runs from 1931 to 1936 — 6 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1928 and is not continuous from it: 98 years separate the first value from the last, and 83% 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 SUWANNEE RIVER AT WHITE SPRINGS, FLA., as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1907–2024.

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	SUWANNEE RIVER AT WHITE SPRINGS, FLA. (mm)
1907	139
1908	181
1928	654
1929	529
1930	418
1931	130
1932	198
1933	256
1934	31.0
1935	106
1936	114
1937	319
1938	58.0
1939	150
1940	91.0
1941	77.0
1942	324
1943	20.0
1944	336
1945	382
1946	403
1947	674
1948	596
1949	288
1950	121
1951	187
1952	146
1953	250
1954	62.0
1955	31.0
1956	37.0
1957	202
1958	264
1959	449
1960	354
1961	242
1962	150
1963	142
1964	777
1965	404
1966	479
1967	178
1968	30.0
1969	264
1970	385
1971	260
1972	337
1973	649
1974	132
1975	370
1976	298
1977	228
1978	203
1979	205
1980	213
1981	79.0
1982	126
1983	388
1984	565
1985	152
1986	296
1987	372
1988	147
1989	39.0
1990	83.0
1991	507
1992	251
1993	218
1994	361
1995	170
1996	152
1997	281
1998	519
1999	32.0
2000	23.0
2001	56.0
2002	30.0
2003	287
2004	375
2005	396
2006	109
2007	34.0
2008	161
2009	179
2010	152
2011	10.0
2012	225
2013	258
2014	380
2015	235
2016	75.0
2017	147
2018	248
2019	175
2020	236
2021	416
2022	208
2023	178
2024	405

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	1907–2024
Completeness	83.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	One period inside 1907–2024 holds no value: 1909 to 1927, 19 years with no reading. It is drawn as a break in the line and is never interpolated across.
Continuity	The record begins in 1907 and is not continuous from it: 118 years separate the first value from the last, and 84% of the years between them are held. The span is not the record.
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 Upper Suwannee and what each holds
Gauge	Measures	Values	Record
SUWANNEE RIVER AT WHITE SPRINGS, FLA.	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	328	1906–2026
SUWANNEE RIVER AT US 441, AT FARGO, GA	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	312	1927–2026

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 — 03110201. 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
SUWANNEE RIVER AT WHITE SPRINGS, FLA.	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
SUWANNEE RIVER AT US 441, AT FARGO, GA	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	2	no
Years spanned	121	yes, 20 or more
Values held	640	no
Distinct measurements	5	yes, 2 or more
Publishers measuring it	2	yes, 2 or more
Official identifiers	1	recorded, not counted

Use this data

Machine-readable JSON /api/v1/observations/by-subject/gauge-usgs-02315500.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), Upper Suwannee gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-upper-suwannee/

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 Upper Suwannee 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 confidence2025-03-12

Source: USGS — National Water Information System, USGS site 02315500, 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.