The monitoring network within this area

Hydrionis holds 38,331 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.

2

Gauges

38,331

Values held

1921–2026

Record spans

344 km²

Area

Gauges within the Ljungbyån drainage basin

2 monitoring points, positioned as the publisher records them.

How low, how high and how variable this gauge runs

A hydrograph says what happened; these say how often. Read off KÄLLSTORP 2's whole daily record between 1967 and 2026, they describe the shape of the record rather than any day in it — and they belong to this gauge and its reach, not to this drainage area.

0.056 m³/s

Q95 low flow

1.320 m³/s

Q50 median flow

4.790 m³/s

Q10 high flow

Largest day of each water year at KÄLLSTORP 2

The highest daily mean discharge in each October-to-September water year, 1967–2025.

These are the largest daily means, not flood peaks. A peak lasting hours is averaged across a whole day here, so the true instantaneous maximum on the same day was higher — sometimes far higher on a fast-responding catchment. Flood frequency work needs a publisher's own instantaneous series; Hydrionis holds one for 2,236 American gauges and not for this one, so the two are never drawn together. A water year the gauge did not substantially cover produces no value at all rather than a low one.

View the data behind this chart

Underlying data
Period	KÄLLSTORP 2 (m³/s)
1967	21.6
1968	12.4
1969	21.7
1970	11.1
1971	18.3
1972	10.5
1973	4.78
1974	7.05
1975	4.93
1976	21.8
1977	11.7
1978	13.7
1979	9.31
1980	11.4
1981	9.73
1982	5.94
1983	5.63
1984	19.1
1985	12.4
1986	10.9
1987	13.7
1988	5.14
1989	7.00
1990	5.68
1991	4.50
1992	5.57
1993	13.1
1994	10.9
1995	15.9
1996	7.57
1997	5.18
1998	10.3
1999	6.45
2000	9.11
2001	12.3
2002	6.69
2003	10.6
2004	10.0
2005	18.2
2006	12.0
2007	5.63
2008	5.64
2009	12.1
2010	21.5
2011	7.43
2012	10.5
2013	5.30
2014	7.01
2015	3.83
2016	12.8
2017	10.2
2018	7.70
2019	11.1
2020	5.68
2021	10.0
2022	11.4
2023	9.18
2024	4.87
2025	6.03

The longest record here

Mean river flow at KÄLLSTORP 2

Annual means of the daily record, 1968–2025. One gauge, not this drainage area.

Annual means computed by Hydrionis from the published daily record, drawn only for years with at least 300 days held. They summarise this gauge's own record and say nothing about any other watercourse in this area.

View the data behind this chart

Underlying data
Period	KÄLLSTORP 2 (m³/s)
1968	2.39
1969	2.10
1970	3.08
1971	1.19
1972	1.46
1973	1.89
1974	1.93
1975	1.42
1976	1.41
1977	2.60
1978	2.20
1979	2.34
1980	2.13
1981	2.30
1982	1.63
1983	1.51
1984	2.96
1985	2.62
1986	2.00
1987	2.45
1988	3.12
1989	1.22
1990	1.56
1991	1.29
1992	1.56
1993	2.02
1994	3.11
1995	2.48
1996	2.35
1997	1.57
1998	2.01
1999	1.97
2000	2.16
2001	2.25
2002	2.07
2003	1.51
2004	2.64
2005	1.48
2006	2.47
2007	2.82
2008	2.03
2009	1.07
2010	2.52
2011	2.35
2012	1.78
2013	1.84
2014	2.23
2015	1.70
2016	1.84
2017	1.68
2018	2.03
2019	1.81
2020	1.68
2021	2.51
2022	1.41
2023	2.16
2024	1.91
2025	1.11

Every gauge Hydrionis holds within this area

Gauges within the Ljungbyån and what each holds
Gauge	Measures	Values	Record
KÄLLSTORP 2	mean river flow	21,561	1967–2026
KÄLLSTORP	mean river flow	16,770	1921–1967

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 — 77000. 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
KÄLLSTORP 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
KÄLLSTORP	Stated by the publisher on the record this gauge’s observations came from.	With the observations

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	106	yes, 20 or more
Values held	38,331	yes, 1000 or more
Distinct measurements	1	no
Publishers measuring it	1	no
Official identifiers	2	recorded, not counted

Use this data

Machine-readable JSON /api/v1/observations/by-subject/se-smhi-1962.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

Attribution you are required to give

These are conditions of the licences the underlying data is published under. They are obligations to the publishers, not to Hydrionis, and they apply to you directly whether or not you mention Hydrionis at all.

Data from Sveriges meteorologiska och hydrologiska institut, used under CC BY 4.0.

Sveriges meteorologiska och hydrologiska institut — CC BY 4.0 (licence text)

Suggested citation for Hydrionis

Hydrionis (2026), Ljungbyån gauge records, accessed 2026-10-05, hydrionis.com/waters/sweden-ljungbyan/

Cite Hydrionis where you rely on the compilation, the normalisation, the eligibility judgements or a chart. Where you use an unmodified published value, the publisher’s attribution is the one that is required; crediting Hydrionis as well is welcome and is not something Hydrionis can require of you.

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 Ljungbyån 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.

Where these figures come from

MeasuredMedium confidence2026-09-30

Source: SMHI — Swedish hydrological observations, 1962. Licence: Open — attribution required (attribution required).

Method: Daily discharge exactly as SMHI publishes it, from its corrected archive. SMHI computes the daily value from its own sub-daily measurement and rating curves; Hydrionis does not recompute it, because a mean derived from whatever sub-daily data happens to be exposed would be a different statistic under the same name.

Checked and approved by SMHI except 2026-01-14 to 2026-09-30 (not yet checked). Station in the LJUNGBYÅN main drainage basin, 342 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 1 October 2026.