The monitoring network within this area

Hydrionis holds 1,082 values from 3 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

1,082

Values held

1907–2026

Record spans

Gauges within the Tygart Valley huc8 subbasin

3 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 TYGART VALLEY RIVER AT BELINGTON, WV

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1908–2025.

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	TYGART VALLEY RIVER AT BELINGTON, WV (m³/s)
1908	271
1909	153
1910	303
1911	337
1912	521
1913	237
1915	249
1916	303
1917	379
1918	484
1920	379
1921	303
1923	253
1924	382
1925	198
1926	235
1927	253
1928	292
1929	328
1931	174
1932	479
1933	253
1934	303
1935	280
1936	379
1937	283
1939	365
1940	229
1941	153
1942	255
1943	183
1944	309
1946	163
1947	294
1948	374
1950	303
1951	274
1952	256
1953	146
1954	168
1956	320
1957	357
1958	234
1959	242
1960	300
1961	181
1962	272
1963	396
1964	294
1965	214
1966	289
1967	487
1968	286
1969	180
1970	337
1972	447
1974	323
1975	211
1976	230
1978	391
1979	273
1981	274
1982	399
1983	248
1984	309
1985	230
1987	194
1988	181
1989	311
1990	348
1991	221
1992	320
1993	260
1994	566
1995	219
1996	600
1997	357
1998	331
1999	251
2000	428
2001	210
2002	368
2003	365
2004	416
2005	202
2007	374
2009	260
2010	267
2011	279
2013	317
2015	428
2016	239
2017	198
2018	416
2019	225
2021	286
2022	309
2023	161
2024	391
2025	385

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	1908–2025
Completeness	84.7% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	18 separate periods inside 1908–2025 hold no value. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1908 and is not continuous from it: 118 years separate the first value from the last, and 85% 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 TYGART VALLEY RIVER AT BELINGTON, WV, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1908–2025.

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	TYGART VALLEY RIVER AT BELINGTON, WV (mm)
1908	737
1909	542
1910	615
1911	847
1912	702
1913	832
1914	610
1915	553
1916	658
1917	628
1918	781
1919	602
1920	656
1921	609
1922	595
1923	681
1924	814
1925	603
1926	832
1927	940
1928	753
1929	749
1930	264
1931	552
1932	680
1933	794
1934	479
1935	882
1936	733
1937	789
1938	571
1939	612
1940	611
1941	390
1942	725
1943	579
1944	715
1945	712
1946	483
1947	463
1948	855
1949	674
1950	876
1951	692
1952	499
1953	513
1954	659
1955	491
1956	879
1957	588
1958	742
1959	541
1960	571
1961	815
1962	664
1963	601
1964	576
1965	502
1966	547
1967	826
1968	560
1969	553
1970	658
1971	712
1972	1,220
1973	717
1974	797
1975	705
1976	608
1977	578
1978	758
1979	923
1980	757
1981	744
1982	775
1983	667
1984	859
1985	800
1986	768
1987	539
1988	495
1989	972
1990	773
1991	607
1992	618
1993	628
1994	898
1995	535
1996	1,300
1997	550
1998	734
1999	501
2000	568
2001	509
2002	743
2003	1,022
2004	832
2005	654
2006	581
2007	716
2008	724
2009	662
2010	532
2011	922
2012	606
2013	779
2014	569
2015	740
2016	658
2018	1,196
2019	641
2020	802
2021	464
2022	733
2023	620
2024	604
2025	626

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	1908–2025
Completeness	99.2% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	One period inside 1908–2025 holds no value: 2017. It is drawn as a break in the line and is never interpolated across.
Continuity	The record begins in 1908 and is not continuous from it: 118 years separate the first value from the last, and 99% 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 Tygart Valley and what each holds
Gauge	Measures	Values	Record
TYGART VALLEY RIVER AT BELINGTON, WV	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	388	1907–2026
BUCKHANNON RIVER AT HALL, WV	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	366	1908–2026
TYGART VALLEY RIVER NEAR DAILEY, WV	burned area within 50 km, catchment area, annual maximum river flow, mean river flow, mean river flow, water year	328	1915–2026

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 — 05020001. 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
TYGART VALLEY RIVER AT BELINGTON, WV	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
BUCKHANNON RIVER AT HALL, WV	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
TYGART VALLEY RIVER NEAR DAILEY, WV	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 5 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	3	yes, 3 or more
Years spanned	120	yes, 20 or more
Values held	1,082	yes, 1000 or more
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-03051000.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), Tygart Valley gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-tygart-valley/

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 Tygart Valley 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 confidence2025-02-01

Source: USGS — National Water Information System, USGS site 03051000, 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.