The monitoring network within this area

Hydrionis holds 33,578 values from 5 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.

5

Gauges

33,578

Values held

1920–2012

Record spans

1,594 km²

Area

Gauges within the Lögdeälven drainage basin

5 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 FÄLLFORSEN ÖVRE's whole daily record between 1952 and 2000, 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.

2.400 m³/s

Q95 low flow

7.100 m³/s

Q50 median flow

35.000 m³/s

Q10 high flow

Largest day of each water year at FÄLLFORSEN ÖVRE

The highest daily mean discharge in each October-to-September water year, 1952–1999.

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	FÄLLFORSEN ÖVRE (m³/s)
1952	114
1953	59.0
1954	82.0
1955	88.0
1956	82.0
1957	74.0
1958	115
1959	67.0
1960	90.0
1961	64.0
1962	58.0
1963	69.0
1964	88.0
1965	97.0
1966	145
1967	67.0
1968	83.0
1969	85.0
1970	105
1971	64.0
1972	113
1973	57.0
1974	114
1975	81.0
1976	127
1977	79.0
1978	85.0
1979	95.0
1980	90.0
1981	69.0
1982	81.0
1983	82.0
1984	85.0
1985	117
1986	76.0
1987	123
1988	110
1989	88.0
1990	81.0
1991	80.0
1992	112
1993	109
1994	123
1995	25.0
1996	107
1997	98.0
1998	84.1
1999	65.0

The longest record here

Mean river flow at FÄLLFORSEN ÖVRE

Annual means of the daily record, 1953–2000. 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	FÄLLFORSEN ÖVRE (m³/s)
1953	19.2
1954	14.9
1955	12.0
1956	12.8
1957	15.9
1958	11.5
1959	11.5
1960	15.1
1961	17.4
1962	13.2
1963	9.39
1964	12.1
1965	13.5
1966	14.0
1967	20.5
1968	10.6
1969	10.7
1970	11.2
1971	11.8
1972	11.2
1973	12.5
1974	15.7
1975	12.3
1976	7.23
1977	14.3
1978	11.5
1979	14.2
1980	13.5
1981	13.2
1982	13.2
1983	15.3
1984	14.3
1985	17.3
1986	15.2
1987	19.2
1988	17.1
1989	14.7
1990	14.3
1991	14.9
1992	16.0
1993	19.7
1994	13.0
1995	13.7
1996	7.86
1997	12.4
1998	20.6
1999	18.1
2000	24.9

Every gauge Hydrionis holds within this area

Gauges within the Lögdeälven and what each holds
Gauge	Measures	Values	Record
FÄLLFORSEN ÖVRE	mean river flow	17,716	1952–2000
HÄGGNÄS	mean river flow	12,691	1920–1955
FÄLLFORSEN	mean river flow	1,184	1949–1952
Hyngelsböle VM	mean river flow	1,063	2009–2012
Bladtjärnsbäcken VM	mean river flow	924	2009–2012

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 — 32000. 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
FÄLLFORSEN ÖVRE	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HÄGGNÄS	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FÄLLFORSEN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Hyngelsböle VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Bladtjärnsbäcken VM	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 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	5	yes, 3 or more
Years spanned	93	yes, 20 or more
Values held	33,578	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-1584.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), Lögdeälven gauge records, accessed 2026-10-05, hydrionis.com/waters/sweden-logdealven/

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 Lögdeälven 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 confidence2000-12-31

Source: SMHI — Swedish hydrological observations, 1584. 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 1998-01-01 to 1999-12-31 (not yet checked). Station in the LÖGDEÄLVEN main drainage basin, 1,199 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 1 October 2026.