The monitoring network within this area

Hydrionis holds 412 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

412

Values held

1895–2026

Record spans

Gauges within the Solomon 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 SOLOMON R AT NILES, KS

The highest instantaneous discharge the publisher recorded in each year — a flood peak as measured, not a daily average of one. 1897–2025.

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	SOLOMON R AT NILES, KS (m³/s)
1897	159
1898	35.7
1899	182
1900	133
1901	62.3
1902	208
1903	850
1918	230
1919	289
1921	146
1922	35.7
1923	263
1924	70.5
1925	55.2
1926	151
1927	279
1928	289
1929	251
1930	133
1931	114
1932	193
1933	105
1934	138
1935	566
1936	121
1937	140
1938	166
1939	170
1940	112
1941	430
1942	532
1943	245
1944	266
1945	280
1946	515
1948	459
1949	217
1950	340
1951	5,040
1952	179
1953	120
1954	183
1955	108
1956	77.9
1957	281
1958	227
1959	103
1960	447
1961	430
1962	197
1963	122
1964	74.2
1965	238
1966	131
1967	281
1968	104
1969	193
1970	70.8
1971	195
1973	807
1975	175
1976	52.7
1977	106
1978	146
1979	205
1980	221
1981	118
1982	274
1983	70.5
1984	125
1985	99.1
1986	83.0
1987	334
1988	21.7
1989	114
1990	86.4
1991	66.3
1992	219
1993	507
1995	269
1996	109
1997	174
1998	213
1999	314
2000	61.7
2001	112
2002	24.4
2003	210
2004	86.9
2005	61.7
2006	39.6
2007	541
2008	136
2010	189
2011	289
2012	94.3
2013	119
2014	101
2015	58.3
2016	267
2017	219
2018	153
2019	279
2020	181
2021	162
2022	69.1
2023	14.4
2024	27.2
2025	157

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	1897–2025
Completeness	84.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	7 separate periods inside 1897–2025 hold no value. The longest runs from 1904 to 1917 — 14 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1897 and is not continuous from it: 129 years separate the first value from the last, and 84% 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 SOLOMON R AT NILES, KS, as a depth

The year's flow spread over the land draining to this gauge, in millimetres — the same unit rainfall is measured in. 1898–2025.

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	SOLOMON R AT NILES, KS (mm)
1898	8.00
1899	16.0
1900	12.0
1901	7.00
1902	43.0
1918	15.0
1919	41.0
1920	17.0
1921	12.0
1922	6.00
1923	32.0
1924	5.00
1925	7.00
1926	19.0
1927	56.0
1928	49.0
1929	27.0
1930	18.0
1931	13.0
1932	14.0
1933	7.00
1934	7.00
1935	50.0
1936	8.00
1937	15.0
1938	19.0
1939	14.0
1940	6.00
1941	52.0
1942	50.0
1943	29.0
1944	45.0
1945	41.0
1946	48.0
1947	35.0
1948	34.0
1949	46.0
1950	70.0
1951	210
1952	29.0
1953	11.0
1954	12.0
1955	9.00
1956	4.00
1957	38.0
1958	29.0
1959	17.0
1960	41.0
1961	70.0
1962	48.0
1963	17.0
1964	8.00
1965	21.0
1966	8.00
1967	27.0
1968	10.0
1969	18.0
1970	4.00
1971	13.0
1972	7.00
1973	92.0
1974	25.0
1975	17.0
1976	10.0
1977	11.0
1978	13.0
1979	31.0
1980	16.0
1981	11.0
1982	45.0
1983	14.0
1984	24.0
1985	12.0
1986	14.0
1987	69.0
1988	10.0
1989	16.0
1990	9.00
1991	5.00
1992	27.0
1993	172
1994	49.0
1995	58.0
1996	31.0
1997	20.0
1998	39.0
1999	39.0
2000	10.0
2001	16.0
2002	5.00
2003	7.00
2004	7.00
2005	7.00
2006	3.00
2007	17.0
2008	35.0
2009	22.0
2010	49.0
2011	48.0
2012	10.0
2013	9.00
2015	10.0
2016	33.0
2017	30.0
2018	36.0
2019	99.0
2020	39.0
2021	22.0
2022	11.0
2023	4.00
2024	3.00
2025	11.0

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	1898–2025
Completeness	87.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	2 separate periods inside 1898–2025 hold no value. The longest runs from 1903 to 1917 — 15 years with no reading. They are drawn as breaks in the line and are never interpolated across.
Continuity	The record begins in 1898 and is not continuous from it: 128 years separate the first value from the last, and 88% 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 Solomon and what each holds
Gauge	Measures	Values	Record
SOLOMON R AT NILES, KS	catchment area, annual maximum river flow, mean river flow, mean river flow, water year	341	1897–2026
SOLOMON R AT BELOIT, KS	catchment area, annual maximum river flow	71	1895–2026

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 — 10260015. 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
SOLOMON R AT NILES, KS	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
SOLOMON R AT BELOIT, KS	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	2	no
Years spanned	132	yes, 20 or more
Values held	412	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-06876900.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), Solomon gauge records, accessed 2026-10-05, hydrionis.com/waters/united-states-solomon/

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 Solomon 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 confidence2025-09-12

Source: USGS — National Water Information System, USGS site 06876900, 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.