The monitoring network within this area

Hydrionis holds 1,037 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

1,037

Values held

1902–2026

Record spans

Gauges within the Piscataquis River 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 Piscataquis River near Dover-Foxcroft, Maine

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1903–2024.

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	Piscataquis River near Dover-Foxcroft, Maine (m³/s)
1903	146
1904	210
1905	68.2
1906	294
1907	228
1909	493
1910	114
1911	116
1912	209
1913	202
1915	173
1916	176
1917	413
1919	133
1920	245
1922	236
1923	609
1924	246
1925	129
1926	220
1927	294
1929	272
1930	228
1931	195
1932	365
1933	169
1934	228
1935	158
1936	547
1937	191
1938	177
1940	388
1941	114
1942	197
1943	133
1945	204
1946	150
1948	273
1949	87.8
1950	320
1951	264
1953	430
1954	374
1955	271
1956	146
1957	84.7
1958	377
1959	149
1961	139
1962	153
1963	396
1965	149
1966	143
1968	255
1969	211
1971	379
1972	197
1973	297
1974	193
1976	289
1978	306
1979	547
1980	169
1981	292
1983	532
1984	360
1985	93.2
1986	251
1987	1,056
1988	199
1989	226
1990	202
1992	212
1993	343
1994	371
1995	114
1996	317
1998	280
1999	236
2000	357
2002	130
2003	92.9
2005	357
2006	368
2008	430
2009	292
2010	266
2012	217
2014	396
2015	309
2017	240
2018	220
2019	258
2020	368
2022	123
2023	357
2024	199

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	1903–2024
Completeness	79.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	25 separate periods inside 1903–2024 hold no value. 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: 122 years separate the first value from the last, and 80% 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 Piscataquis River near Dover-Foxcroft, Maine, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1903–2025.

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	Piscataquis River near Dover-Foxcroft, Maine (mm)
1903	582
1904	582
1905	369
1906	716
1907	1,063
1908	640
1909	795
1910	514
1911	415
1912	906
1913	769
1914	510
1915	691
1916	708
1917	968
1918	744
1919	753
1920	831
1921	568
1922	731
1923	666
1924	509
1925	809
1926	606
1927	731
1928	767
1929	599
1930	581
1931	636
1932	722
1933	570
1934	627
1935	576
1936	929
1937	772
1938	755
1939	499
1940	668
1941	345
1942	626
1943	737
1944	509
1945	771
1946	652
1947	677
1948	558
1949	425
1950	853
1951	803
1952	581
1953	917
1954	1,238
1955	597
1956	564
1957	527
1958	853
1959	764
1960	726
1961	706
1962	795
1963	860
1964	459
1965	446
1966	747
1967	612
1968	550
1969	1,204
1970	766
1971	610
1972	872
1973	1,256
1974	834
1975	610
1976	995
1977	857
1978	588
1979	929
1980	493
1981	718
1982	568
1983	1,044
1984	867
1985	582
1986	697
1987	672
1988	568
1989	611
1990	864
1991	676
1992	547
1993	690
1994	594
1995	646
1996	1,120
1997	568
1998	841
1999	750
2000	652
2001	345
2002	463
2003	834
2004	578
2005	1,295
2006	954
2007	688
2008	992
2009	890
2010	826
2011	862
2012	748
2013	703
2014	861
2015	710
2016	527
2017	726
2018	652
2019	794
2020	757
2021	405
2022	765
2023	1,209
2024	746
2025	564

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	1903–2025
Completeness	100.0% of the periods in that span are held.
Continuity	Continuous: every year from 1903 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 Piscataquis River and what each holds
Gauge	Measures	Values	Record
Piscataquis River near Dover-Foxcroft, Maine	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	369	1902–2026
Piscataquis River at Medford, Maine	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	282	1924–2026
Sebec River at Sebec, Maine	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	209	1925–2026
PLEASANT RIVER NEAR MILO, ME	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	177	1920–2026

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 — 01020004. 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
Piscataquis River near Dover-Foxcroft, Maine	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
Piscataquis River at Medford, Maine	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
Sebec River at Sebec, Maine	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
PLEASANT RIVER NEAR MILO, ME	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	4	yes, 3 or more
Years spanned	125	yes, 20 or more
Values held	1,037	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-01031500.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), Piscataquis River gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-piscataquis-river/

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 Piscataquis River 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 confidence2024-12-12

Source: USGS — National Water Information System, USGS site 01031500, 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.