The monitoring network within this area

Hydrionis holds 35,122 values from 3 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.

3
Gauges
35,122
Values held
1931–2026
Record spans
801 km²
Area
Gauges within the Lyckebyån drainage basin
3 monitoring points, positioned as the publisher records them.
Gauges within the Lyckebyån drainage basinBJÖRSMÅLA, KÄTTILSMÅLA, MARIEFORSBJÖRSMÅLAKÄTTILSMÅLAMARIEFORS

How low, how high and how variable this gauge runs

A hydrograph says what happened; these say how often. Read off KÄTTILSMÅLA's whole daily record between 1938 and 1988, 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.

0.440 m³/s
Q95 low flow
3.600 m³/s
Q50 median flow
12.400 m³/s
Q10 high flow
Largest day of each water year at KÄTTILSMÅLA
The highest daily mean discharge in each October-to-September water year, 1939–1986.
Largest day of each water year at KÄTTILSMÅLALargest day of each water year at KÄTTILSMÅLA: KÄTTILSMÅLA in m³/s, from 1939 to 1986.02040m³/s19391945195119571963196919751981KÄTTILSMÅLA 1939: 31.0 m³/sKÄTTILSMÅLA 1940: 15.1 m³/sKÄTTILSMÅLA 1941: 15.1 m³/sKÄTTILSMÅLA 1942: 26.0 m³/sKÄTTILSMÅLA 1943: 17.8 m³/sKÄTTILSMÅLA 1944: 28.0 m³/sKÄTTILSMÅLA 1945: 27.0 m³/sKÄTTILSMÅLA 1946: 18.7 m³/sKÄTTILSMÅLA 1947: 24.0 m³/sKÄTTILSMÅLA 1948: 8.10 m³/sKÄTTILSMÅLA 1949: 27.0 m³/sKÄTTILSMÅLA 1950: 38.0 m³/sKÄTTILSMÅLA 1951: 9.70 m³/sKÄTTILSMÅLA 1952: 14.6 m³/sKÄTTILSMÅLA 1953: 11.2 m³/sKÄTTILSMÅLA 1954: 14.9 m³/sKÄTTILSMÅLA 1955: 13.8 m³/sKÄTTILSMÅLA 1956: 11.2 m³/sKÄTTILSMÅLA 1957: 30.0 m³/sKÄTTILSMÅLA 1958: 21.0 m³/sKÄTTILSMÅLA 1959: 12.2 m³/sKÄTTILSMÅLA 1960: 25.0 m³/sKÄTTILSMÅLA 1961: 13.5 m³/sKÄTTILSMÅLA 1962: 16.0 m³/sKÄTTILSMÅLA 1963: 11.2 m³/sKÄTTILSMÅLA 1964: 13.8 m³/sKÄTTILSMÅLA 1965: 33.0 m³/sKÄTTILSMÅLA 1966: 30.0 m³/sKÄTTILSMÅLA 1967: 23.0 m³/sKÄTTILSMÅLA 1968: 22.0 m³/sKÄTTILSMÅLA 1969: 43.0 m³/sKÄTTILSMÅLA 1970: 26.0 m³/sKÄTTILSMÅLA 1971: 14.6 m³/sKÄTTILSMÅLA 1972: 12.7 m³/sKÄTTILSMÅLA 1973: 10.9 m³/sKÄTTILSMÅLA 1974: 21.0 m³/sKÄTTILSMÅLA 1975: 6.30 m³/sKÄTTILSMÅLA 1976: 33.0 m³/sKÄTTILSMÅLA 1977: 22.0 m³/sKÄTTILSMÅLA 1978: 24.0 m³/sKÄTTILSMÅLA 1979: 13.6 m³/sKÄTTILSMÅLA 1980: 22.0 m³/sKÄTTILSMÅLA 1981: 21.0 m³/sKÄTTILSMÅLA 1982: 17.2 m³/sKÄTTILSMÅLA 1983: 10.7 m³/sKÄTTILSMÅLA 1984: 18.2 m³/sKÄTTILSMÅLA 1985: 19.7 m³/sKÄTTILSMÅLA 1986: 15.6 m³/s

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
PeriodKÄTTILSMÅLA (m³/s)
193931.0
194015.1
194115.1
194226.0
194317.8
194428.0
194527.0
194618.7
194724.0
19488.10
194927.0
195038.0
19519.70
195214.6
195311.2
195414.9
195513.8
195611.2
195730.0
195821.0
195912.2
196025.0
196113.5
196216.0
196311.2
196413.8
196533.0
196630.0
196723.0
196822.0
196943.0
197026.0
197114.6
197212.7
197310.9
197421.0
19756.30
197633.0
197722.0
197824.0
197913.6
198022.0
198121.0
198217.2
198310.7
198418.2
198519.7
198615.6

The longest record here

Mean river flow at KÄTTILSMÅLA
Annual means of the daily record, 1939–1987. One gauge, not this drainage area.
Mean river flow at KÄTTILSMÅLAMean river flow at KÄTTILSMÅLA: KÄTTILSMÅLA in m³/s, from 1939 to 1987.02.557.510m³/s1939194619531960196719741981KÄTTILSMÅLA 1939: 4.33 m³/sKÄTTILSMÅLA 1940: 5.57 m³/sKÄTTILSMÅLA 1941: 3.11 m³/sKÄTTILSMÅLA 1942: 5.06 m³/sKÄTTILSMÅLA 1943: 5.10 m³/sKÄTTILSMÅLA 1944: 7.28 m³/sKÄTTILSMÅLA 1945: 9.06 m³/sKÄTTILSMÅLA 1946: 7.77 m³/sKÄTTILSMÅLA 1947: 3.90 m³/sKÄTTILSMÅLA 1948: 5.47 m³/sKÄTTILSMÅLA 1949: 4.03 m³/sKÄTTILSMÅLA 1950: 8.50 m³/sKÄTTILSMÅLA 1951: 7.42 m³/sKÄTTILSMÅLA 1952: 6.09 m³/sKÄTTILSMÅLA 1953: 3.64 m³/sKÄTTILSMÅLA 1954: 4.32 m³/sKÄTTILSMÅLA 1955: 5.02 m³/sKÄTTILSMÅLA 1956: 4.21 m³/sKÄTTILSMÅLA 1957: 4.93 m³/sKÄTTILSMÅLA 1958: 7.45 m³/sKÄTTILSMÅLA 1959: 4.22 m³/sKÄTTILSMÅLA 1960: 7.71 m³/sKÄTTILSMÅLA 1961: 6.27 m³/sKÄTTILSMÅLA 1962: 5.83 m³/sKÄTTILSMÅLA 1963: 4.16 m³/sKÄTTILSMÅLA 1964: 1.96 m³/sKÄTTILSMÅLA 1965: 5.65 m³/sKÄTTILSMÅLA 1966: 8.52 m³/sKÄTTILSMÅLA 1967: 6.39 m³/sKÄTTILSMÅLA 1968: 5.53 m³/sKÄTTILSMÅLA 1969: 5.63 m³/sKÄTTILSMÅLA 1970: 7.96 m³/sKÄTTILSMÅLA 1971: 3.08 m³/sKÄTTILSMÅLA 1972: 3.21 m³/sKÄTTILSMÅLA 1973: 3.27 m³/sKÄTTILSMÅLA 1974: 4.71 m³/sKÄTTILSMÅLA 1975: 4.77 m³/sKÄTTILSMÅLA 1976: 1.88 m³/sKÄTTILSMÅLA 1977: 6.52 m³/sKÄTTILSMÅLA 1978: 5.35 m³/sKÄTTILSMÅLA 1979: 5.07 m³/sKÄTTILSMÅLA 1980: 4.92 m³/sKÄTTILSMÅLA 1981: 6.61 m³/sKÄTTILSMÅLA 1982: 4.24 m³/sKÄTTILSMÅLA 1983: 4.51 m³/sKÄTTILSMÅLA 1984: 5.76 m³/sKÄTTILSMÅLA 1985: 5.63 m³/sKÄTTILSMÅLA 1986: 5.41 m³/sKÄTTILSMÅLA 1987: 5.28 m³/s

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
PeriodKÄTTILSMÅLA (m³/s)
19394.33
19405.57
19413.11
19425.06
19435.10
19447.28
19459.06
19467.77
19473.90
19485.47
19494.03
19508.50
19517.42
19526.09
19533.64
19544.32
19555.02
19564.21
19574.93
19587.45
19594.22
19607.71
19616.27
19625.83
19634.16
19641.96
19655.65
19668.52
19676.39
19685.53
19695.63
19707.96
19713.08
19723.21
19733.27
19744.71
19754.77
19761.88
19776.52
19785.35
19795.07
19804.92
19816.61
19824.24
19834.51
19845.76
19855.63
19865.41
19875.28

Every gauge Hydrionis holds within this area

Gauges within the Lyckebyån and what each holds
GaugeMeasuresValuesRecord
KÄTTILSMÅLAmean river flow18,0101938–1988
MARIEFORSmean river flow14,1901987–2026
BJÖRSMÅLAmean river flow2,9221931–1938

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 — 80000. 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
GaugeEvidenceEstablished
KÄTTILSMÅLAStated by the publisher on the record this gauge’s observations came from.With the observations
MARIEFORSStated by the publisher on the record this gauge’s observations came from.With the observations
BJÖRSMÅLAStated 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 3 of them, which makes it a full profile.

Information-gain signals held for this water body
SignalHeldCounts
Gauges holding a real record3yes, 3 or more
Years spanned96yes, 20 or more
Values held35,122yes, 1000 or more
Distinct measurements1no
Publishers measuring it1no
Official identifiers2recorded, not counted

Use this data

Use this data

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.

Suggested citation for Hydrionis

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

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 Lyckebyån 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

MeasuredHigh confidence1988-02-21

Source: SMHI — Swedish hydrological observations, 1306. 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.

Every value is checked and approved by SMHI. Station in the LYCKEBYÅN main drainage basin, 785 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 1 October 2026.