The monitoring network within this area

Hydrionis holds 453 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

453

Values held

1913–2026

Record spans

Gauges within the Upper Canadian 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 MORA RIVER NEAR GOLONDRINAS, NM

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1916–2025.

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	MORA RIVER NEAR GOLONDRINAS, NM (m³/s)
1916	11.3
1917	4.81
1918	9.91
1919	25.5
1920	7.08
1929	49.6
1930	29.7
1931	16.6
1932	13.5
1935	47.9
1936	18.2
1937	49.6
1938	44.7
1940	44.7
1941	64.3
1942	104
1943	13.4
1944	9.63
1945	10.7
1946	17.8
1947	10.7
1948	11.0
1949	62.3
1950	17.2
1951	31.1
1952	396
1953	149
1954	17.9
1955	15.9
1956	24.8
1957	20.0
1959	16.5
1960	11.4
1961	56.4
1962	33.1
1963	15.8
1964	4.76
1965	63.4
1966	47.6
1967	32.6
1968	27.8
1969	90.0
1971	23.3
1972	23.1
1973	21.4
1974	32.6
1975	23.1
1976	8.30
1977	2.83
1978	18.0
1979	82.7
1980	19.2
1981	19.8
1982	14.2
1983	8.04
1984	16.4
1985	21.5
1986	21.1
1988	12.7
1989	12.3
1990	14.3
1991	29.7
1992	39.4
1993	32.3
1994	175
1995	39.9
1996	11.9
1997	17.8
1998	11.5
1999	49.0
2000	5.30
2001	0.793
2003	0.425
2004	14.0
2005	7.19
2006	5.10
2007	6.74
2008	10.5
2009	60.9
2010	48.1
2011	63.7
2012	1.44
2013	9.43
2014	8.07
2015	15.9
2016	6.97
2017	27.8
2018	11.4
2019	5.66
2020	4.36
2021	6.06
2022	15.3
2023	17.3
2024	15.5
2025	27.8

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	1916–2025
Completeness	86.4% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	7 separate periods inside 1916–2025 hold no value. The longest runs from 1921 to 1928 — 8 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1916 and is not continuous from it: 110 years separate the first value from the last, and 86% of the years between them are held. The span is not the record.
Last read from the publisher	2026-08-31
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 MORA RIVER NEAR GOLONDRINAS, NM, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1916–2025.

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	MORA RIVER NEAR GOLONDRINAS, NM (mm)
1916	62.0
1917	19.0
1918	31.0
1919	141
1927	26.0
1928	30.0
1929	85.0
1930	54.0
1931	61.0
1932	62.0
1933	21.0
1934	4.00
1935	63.0
1936	19.0
1937	40.0
1938	37.0
1939	42.0
1940	26.0
1941	206
1942	126
1943	27.0
1944	54.0
1945	40.0
1946	21.0
1947	19.0
1948	53.0
1949	47.0
1950	5.00
1951	5.00
1952	33.0
1953	18.0
1954	8.00
1955	23.0
1956	3.00
1957	55.0
1958	111
1959	25.0
1960	40.0
1961	103
1962	35.0
1963	9.00
1964	7.00
1965	81.0
1966	37.0
1967	26.0
1968	39.0
1969	70.0
1970	27.0
1971	17.0
1972	15.0
1973	99.0
1974	8.00
1975	35.0
1976	15.0
1977	9.00
1978	14.0
1979	70.0
1980	42.0
1981	17.0
1982	35.0
1983	54.0
1984	46.0
1985	102
1989	21.0
1990	35.0
1991	101
1992	52.0
1993	41.0
1994	98.0
1995	80.0
1996	15.0
1997	75.0
1998	42.0
1999	71.0
2000	11.0
2001	18.0
2002	3.00
2003	3.00
2004	26.0
2005	48.0
2006	8.00
2007	26.0
2008	20.0
2009	14.0
2010	36.0
2011	3.00
2012	6.00
2013	7.00
2014	10.0
2015	44.0
2016	30.0
2017	56.0
2018	7.00
2019	43.0
2020	6.00
2021	24.0
2022	31.0
2023	45.0
2024	57.0
2025	73.0

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	1916–2025
Completeness	90.9% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	2 separate periods inside 1916–2025 hold no value. The longest runs from 1920 to 1926 — 7 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1916 and is not continuous from it: 110 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	2026-08-24
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 Canadian and what each holds
Gauge	Measures	Values	Record
MORA RIVER NEAR GOLONDRINAS, NM	burned area within 50 km, catchment area, annual maximum river flow, mean river flow	236	1916–2026
CANADIAN RIVER NEAR SANCHEZ, NM	burned area within 50 km, catchment area, annual maximum river flow, mean river flow	217	1913–2026

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 — 11080003. 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
MORA RIVER NEAR GOLONDRINAS, NM	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	2026-08-26
CANADIAN RIVER NEAR SANCHEZ, NM	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	2026-08-26

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	114	yes, 20 or more
Values held	453	no
Distinct measurements	4	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-07216500.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 Canadian gauge records, accessed 2026-09-02, hydrionis.com/waters/united-states-upper-canadian/

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 Canadian 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 confidence2025-08-27

Source: USGS — National Water Information System, USGS site 07216500, 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 31 August 2026.