The monitoring network within this area

Hydrionis holds 381 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

381

Values held

1903–2026

Record spans

Gauges within the Schoharie 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 SCHOHARIE CREEK AT PRATTSVILLE NY

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1903–2025.

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	SCHOHARIE CREEK AT PRATTSVILLE NY (m³/s)
1903	793
1907	385
1909	249
1910	609
1911	127
1912	266
1913	467
1914	260
1915	379
1916	405
1917	215
1919	394
1920	467
1921	218
1922	476
1924	821
1925	273
1926	1,198
1927	334
1929	317
1931	145
1932	170
1933	1,104
1934	142
1935	776
1936	1,090
1937	844
1938	1,274
1940	377
1941	99.7
1942	564
1943	242
1945	209
1946	235
1947	306
1948	496
1950	182
1951	617
1952	799
1954	211
1955	711
1957	107
1959	430
1960	1,413
1961	379
1962	326
1964	281
1965	108
1966	174
1968	442
1969	405
1971	220
1972	776
1973	408
1974	702
1976	572
1977	419
1978	866
1979	549
1980	1,121
1981	629
1982	277
1983	294
1984	835
1985	303
1986	490
1987	1,348
1989	379
1990	481
1991	289
1993	433
1995	233
1996	1,495
1998	456
1999	1,212
2000	510
2002	92.3
2004	750
2005	1,175
2007	589
2008	422
2010	821
2011	3,398
2012	436
2014	411
2015	268
2016	464
2017	246
2019	365
2020	357
2021	665
2022	362
2023	750
2025	300

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	1903–2025
Completeness	76.4% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	27 separate periods inside 1903–2025 hold no value. The longest runs from 1904 to 1906 — 3 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1903 and is not continuous from it: 123 years separate the first value from the last, and 76% 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 SCHOHARIE CREEK AT PRATTSVILLE NY, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1907–2025.

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	SCHOHARIE CREEK AT PRATTSVILLE NY (mm)
1907	791
1908	553
1909	584
1910	731
1911	615
1912	729
1913	752
1914	680
1915	848
1916	786
1917	615
1918	560
1919	719
1920	816
1921	584
1922	538
1923	551
1924	763
1925	586
1926	536
1927	998
1928	714
1929	799
1930	418
1931	565
1932	758
1933	718
1934	615
1935	655
1936	667
1937	899
1938	740
1939	460
1940	727
1941	366
1942	667
1943	657
1944	399
1945	851
1946	501
1947	596
1948	644
1949	455
1950	768
1951	893
1952	799
1953	681
1954	670
1955	923
1956	633
1957	490
1958	755
1959	656
1960	724
1961	497
1962	481
1963	439
1964	412
1965	411
1966	417
1967	541
1968	665
1969	728
1970	574
1971	669
1972	1,009
1973	946
1974	692
1975	761
1976	876
1977	1,206
1978	843
1979	1,027
1980	494
1981	548
1982	520
1983	886
1984	763
1985	410
1986	654
1987	931
1988	478
1989	674
1990	800
1991	490
1992	489
1993	715
1994	653
1995	567
1996	1,225
1997	534
1998	797
1999	752
2000	846
2001	443
2002	582
2003	1,223
2004	813
2005	929
2006	1,012
2007	870
2008	907
2009	721
2010	1,089
2011	1,376
2012	581
2013	651
2014	616
2015	470
2016	390
2017	642
2018	1,035
2019	736
2020	752
2021	943
2022	634
2023	814
2024	669
2025	588

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	1907–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1907 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 Schoharie and what each holds
Gauge	Measures	Values	Record
SCHOHARIE CREEK AT PRATTSVILLE NY	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	355	1903–2026
SCHOHARIE CREEK AT MIDDLEBURGH NY	catchment area, annual maximum river flow	26	1909–2026

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 — 02020005. 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
SCHOHARIE CREEK AT PRATTSVILLE NY	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
SCHOHARIE CREEK AT MIDDLEBURGH NY	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 2 of them, which makes it a profile, not indexed.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	1	no
Years spanned	124	yes, 20 or more
Values held	381	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-01350000.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), Schoharie gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-schoharie/

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 Schoharie 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 confidence2025-05-09

Source: USGS — National Water Information System, USGS site 01350000, 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.