The monitoring network within this area

Hydrionis holds 1,420 values from 5 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

1,420

Values held

1907–2026

Record spans

Gauges within the Upper Hudson huc8 subbasin

5 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 HUDSON RIVER AT NORTH CREEK NY

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	HUDSON RIVER AT NORTH CREEK NY (m³/s)
1908	425
1909	456
1910	303
1911	357
1912	365
1913	804
1914	535
1915	249
1916	399
1917	614
1918	314
1919	391
1920	303
1921	362
1922	603
1923	294
1924	340
1925	402
1926	487
1928	535
1929	294
1930	266
1931	283
1932	221
1934	225
1935	209
1936	651
1937	337
1938	473
1939	382
1940	368
1941	351
1942	527
1943	354
1944	334
1945	433
1947	668
1948	345
1950	334
1951	357
1952	396
1953	600
1954	430
1955	340
1956	331
1957	147
1958	456
1959	280
1960	399
1961	286
1962	300
1963	345
1964	328
1965	216
1966	199
1967	365
1968	267
1969	447
1970	320
1971	309
1972	572
1973	416
1974	323
1976	561
1977	442
1979	708
1980	476
1981	428
1982	521
1983	382
1984	481
1986	340
1987	504
1988	242
1990	428
1991	300
1992	368
1993	561
1994	450
1995	207
1996	490
1998	745
1999	240
2000	345
2001	487
2002	459
2003	253
2004	360
2005	447
2006	453
2007	470
2008	405
2009	300
2010	343
2011	988
2012	203
2013	371
2014	702
2015	289
2016	211
2017	337
2018	388
2019	592
2021	379
2022	504
2023	504
2025	266

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	90.7% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	11 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 91% 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 HUDSON RIVER AT NORTH CREEK 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. 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	HUDSON RIVER AT NORTH CREEK NY (mm)
1908	762
1909	763
1910	658
1911	558
1912	739
1913	715
1914	568
1915	525
1916	739
1917	747
1918	693
1919	670
1920	661
1921	678
1922	746
1923	549
1924	774
1925	838
1926	766
1927	673
1928	739
1929	766
1930	661
1931	476
1932	846
1933	563
1934	471
1935	632
1936	696
1937	775
1938	689
1939	581
1940	599
1941	437
1942	674
1943	771
1944	552
1945	879
1946	674
1947	935
1948	594
1949	638
1950	664
1951	758
1952	751
1953	674
1954	781
1955	616
1956	569
1957	517
1958	620
1959	799
1960	644
1961	507
1962	576
1963	511
1964	475
1965	434
1966	512
1967	597
1968	553
1969	724
1970	586
1971	761
1972	923
1973	875
1974	751
1975	746
1976	1,044
1977	893
1978	704
1979	878
1980	554
1981	660
1982	669
1983	769
1984	749
1985	692
1986	809
1987	698
1988	532
1989	709
1990	1,014
1991	639
1992	752
1993	695
1994	700
1995	590
1996	946
1997	672
1998	781
1999	594
2000	895
2001	616
2002	639
2003	808
2004	678
2005	823
2006	1,029
2007	686
2008	888
2009	753
2010	737
2011	1,127
2012	610
2013	766
2014	774
2015	660
2016	565
2017	921
2018	734
2019	1,072
2020	582
2021	732
2022	713
2023	949
2024	699
2025	605

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	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1908 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 Upper Hudson and what each holds
Gauge	Measures	Values	Record
HUDSON RIVER AT NORTH CREEK NY	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	355	1907–2026
INDIAN RIVER NEAR INDIAN LAKE NY	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	333	1912–2026
HUDSON RIVER AT HADLEY NY	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	314	1913–2026
HUDSON RIVER NEAR NEWCOMB NY	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	266	1925–2026
HUDSON R AT GOOLEY, NEAR INDIAN LAKE NY	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	152	1916–2026

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 — 02020001. 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
HUDSON RIVER AT NORTH CREEK 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
INDIAN RIVER NEAR INDIAN LAKE 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
HUDSON RIVER AT HADLEY 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
HUDSON RIVER NEAR NEWCOMB 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
HUDSON R AT GOOLEY, NEAR INDIAN LAKE 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 4 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	5	yes, 3 or more
Years spanned	120	yes, 20 or more
Values held	1,420	yes, 1000 or more
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-01315500.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 Hudson gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-upper-hudson/

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 Hudson 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 confidence2025-03-17

Source: USGS — National Water Information System, USGS site 01315500, 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.