The monitoring network within this area

Hydrionis holds 737,893 values from 72 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

737,893

Values held

1889–2026

Record spans

22,600 km²

Area

Gauges within the Norrström drainage basin

72 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 ÖVRE HYNDEVAD's whole daily record between 1889 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.

3.200 m³/s

Q95 low flow

15.700 m³/s

Q50 median flow

60.000 m³/s

Q10 high flow

Largest day of each water year at ÖVRE HYNDEVAD

The highest daily mean discharge in each October-to-September water year, 1889–2025.

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	ÖVRE HYNDEVAD (m³/s)
1889	113
1890	57.0
1891	57.0
1892	19.0
1893	60.0
1894	102
1895	91.0
1896	97.0
1897	99.0
1898	96.0
1899	104
1900	96.0
1901	19.0
1902	107
1903	112
1904	43.0
1905	97.0
1906	95.0
1907	97.0
1908	92.0
1909	100
1910	94.0
1911	66.0
1912	115
1913	78.0
1914	15.0
1915	116
1916	80.0
1917	100
1918	98.0
1919	112
1920	20.0
1921	78.0
1922	23.0
1923	118
1924	77.0
1925	95.0
1926	103
1927	82.0
1928	97.0
1929	80.0
1930	103
1931	83.0
1932	15.0
1933	13.5
1934	102
1935	102
1936	95.0
1937	81.0
1938	103
1939	47.0
1940	17.4
1941	40.0
1942	100
1943	96.0
1944	115
1945	80.0
1946	78.0
1947	9.40
1948	15.6
1949	93.0
1950	115
1951	72.0
1952	90.0
1953	88.0
1954	108
1955	44.0
1956	77.0
1957	95.0
1958	108
1959	104
1960	108
1961	90.0
1962	67.0
1963	87.0
1964	34.0
1965	110
1966	104
1967	95.0
1968	96.0
1969	99.0
1970	68.0
1971	69.0
1972	33.0
1973	25.0
1974	90.0
1975	8.70
1976	103
1977	86.0
1978	74.0
1979	85.0
1980	90.0
1981	86.0
1982	61.0
1983	42.0
1984	94.0
1985	93.0
1986	82.0
1987	88.0
1988	77.0
1989	57.0
1990	32.0
1991	81.0
1992	42.0
1993	76.0
1994	86.0
1995	26.0
1996	72.9
1997	68.8
1998	96.0
1999	89.0
2000	97.0
2001	82.0
2002	12.3
2003	90.0
2004	54.8
2005	49.1
2006	88.9
2007	64.5
2008	71.0
2009	87.0
2010	36.0
2011	70.0
2012	85.0
2013	90.0
2014	54.0
2015	54.0
2016	3.30
2017	67.2
2018	65.4
2019	90.0
2020	101
2021	60.8
2022	105
2023	97.4
2024	72.4
2025	65.0

The longest record here

Mean river flow at ÖVRE HYNDEVAD

Annual means of the daily record, 1889–2025. 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	ÖVRE HYNDEVAD (m³/s)
1889	20.6
1890	34.9
1891	24.9
1892	23.5
1893	16.6
1894	27.8
1895	36.6
1896	23.3
1897	25.3
1898	47.0
1899	35.1
1900	28.3
1901	16.3
1902	16.2
1903	35.3
1904	33.0
1905	15.2
1906	23.2
1907	28.4
1908	21.8
1909	17.7
1910	36.7
1911	22.7
1912	28.9
1913	28.2
1914	16.1
1915	9.90
1916	41.0
1917	20.7
1918	23.4
1919	20.6
1920	26.2
1921	10.2
1922	13.9
1923	22.3
1924	50.3
1925	15.4
1926	14.1
1927	47.1
1928	28.0
1929	26.7
1930	30.1
1931	31.4
1932	18.0
1933	8.34
1934	11.7
1935	31.0
1936	34.1
1937	23.5
1938	17.4
1939	23.9
1940	13.6
1941	10.9
1942	10.7
1943	21.0
1944	43.4
1945	31.4
1946	21.9
1947	12.7
1948	5.34
1949	12.8
1950	34.1
1951	35.6
1952	19.0
1953	25.4
1954	27.0
1955	25.8
1956	17.7
1957	28.3
1958	33.3
1959	34.6
1960	32.4
1961	27.8
1962	32.1
1963	15.4
1964	13.6
1965	18.3
1966	32.9
1967	42.5
1968	22.3
1969	27.2
1970	20.8
1971	17.2
1972	21.4
1973	12.0
1974	19.8
1975	21.3
1976	4.44
1977	33.6
1978	29.1
1979	27.7
1980	29.7
1981	29.4
1982	27.6
1983	21.8
1984	27.5
1985	31.2
1986	29.1
1987	34.7
1988	32.4
1989	15.4
1990	13.7
1991	16.4
1992	14.8
1993	11.0
1994	21.6
1995	24.1
1996	13.8
1997	14.3
1998	30.0
1999	32.1
2000	37.5
2001	29.5
2002	20.0
2003	6.84
2004	23.6
2005	13.2
2006	24.6
2007	14.3
2008	29.0
2009	22.3
2010	31.2
2011	21.5
2012	33.6
2013	19.8
2014	26.2
2015	24.3
2016	13.3
2017	5.19
2018	15.9
2019	18.6
2020	17.9
2021	24.2
2022	11.6
2023	41.0
2024	31.3
2025	21.1

Every gauge Hydrionis holds within this area

Gauges within the Norrström and what each holds
Gauge	Measures	Values	Record
ÖVRE HYNDEVAD	mean river flow	50,310	1889–2026
MÄLAREN	mean river flow	45,899	1901–2026
HAMMARBY	mean river flow	25,294	1909–1978
STABBY	mean river flow	24,817	1958–2026
VATTHOLMA	mean river flow	22,980	1916–1979
SKÄLLNORA	mean river flow	21,526	1961–2020
KARLSLUND 2	mean river flow	19,050	1974–2026
ODENSVIBRON 2	mean river flow	17,586	1978–2026
DÖMSTA	mean river flow	17,584	1978–2026
HAMMARBY 2	mean river flow	17,551	1978–2026
DALKARLSHYTTAN	mean river flow	17,550	1978–2026
KRINGLAN	mean river flow	17,547	1978–2026
GRÄNVAD	mean river flow	17,462	1978–2026
ÅKERS KRUTBRUK	mean river flow	17,273	1979–2026
HÄRNEVI	mean river flow	17,185	1979–2026
VATTHOLMA 2	mean river flow	17,185	1979–2026
RANSTA	mean river flow	17,107	1979–2026
BERG	mean river flow	16,831	1980–2026
BERNSHAMMAR	mean river flow	16,025	1951–1995
BACKA ÖVRE	mean river flow	15,951	1945–1989
FELLINGSBRO	mean river flow	15,926	1978–2026
ALMBRO	mean river flow	15,878	1980–2023
RAMNÄS KRV	mean river flow	15,818	1981–2026
SEMLA	mean river flow	15,705	1965–2015
HALLSTAHAMMAR	mean river flow	15,483	1917–1959
SÄVJA	mean river flow	15,091	1979–2020
ÅKESTA KVARN	mean river flow	15,062	1980–2021
FINNTORPET	mean river flow	14,729	1979–2019
BUSKBÄCKEN	mean river flow	13,371	1978–2026
LERNBO	mean river flow	12,053	1969–2001
UVLUNGE	mean river flow	9,496	1917–1942
BERGSHAMRA	mean river flow	8,405	1978–2001
RÄLLSÄLV	mean river flow	8,212	1978–2001
SÖRSÄTRA	mean river flow	8,120	1978–2001
FIHOLM	mean river flow	8,035	1993–2015
LURBO	mean river flow	7,969	1979–2001
ULVA KVARNDAMM	mean river flow	7,416	1979–1999
RÖFORS	mean river flow	7,336	1922–1943
LUGNET	mean river flow	6,482	1909–1926
BORN	mean river flow	5,936	1909–1925
FUNDBO	mean river flow	5,936	1919–1935
FORSBO	mean river flow	5,624	1910–1932
HUSÖN	mean river flow	5,400	1994–2008
RINKABY	mean river flow	5,325	1994–2008
HIDINGEBRO 2	mean river flow	4,174	1989–2001
ÅTORP-STAVÅN	mean river flow	4,092	2015–2026
SUNDBROMARK	mean river flow	3,877	1958–1968
TORSHÄLLA INVALLNING	mean river flow	3,836	1913–1923
UPPSALA BÄRBYLEDEN	mean river flow	3,279	2017–2026
SKÄLLNORA ÖVRE	mean river flow	3,205	2017–2026
KUGGEBRO	mean river flow	3,136	1919–1932
FRÖGÄRDE	mean river flow	3,106	1993–2001
SÖDRA BRO	mean river flow	3,075	1925–1933
BERGSHAMMAR	mean river flow	2,729	1993–2000
FORSBRON	mean river flow	2,534	1972–1978
KÄLLTORPS INVALLNING	mean river flow	2,244	1913–1922
Sörsätra VM	mean river flow	2,180	2008–2014
KLINGGÅRDEN	mean river flow	1,831	2021–2026
BOL	mean river flow	1,826	1918–1923
LÖTAÅ	mean river flow	1,393	1979–1983
Liliansbergsbäcken VM	mean river flow	1,091	2008–2011
ÅKESTA KVARN 3	mean river flow	1,053	2023–2026
Folsberga VM	mean river flow	1,048	2010–2013
Taxinge VM	mean river flow	914	2010–2013
Rävsnäs VM	mean river flow	909	2010–2013
Valsta VM	mean river flow	899	2013–2015
Hällsjön VM	mean river flow	889	2013–2015
Laxå VM	mean river flow	709	2013–2015
Täby kyrka VM	mean river flow	706	2013–2015
ÅKESTA KVARN 2	mean river flow	633	2021–2023
Gamla Pershyttan VM	mean river flow	600	2013–2015
Stäholmsbäcken VM	mean river flow	404	2011–2012

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 — 61000. 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
ÖVRE HYNDEVAD	Stated by the publisher on the record this gauge’s observations came from.	With the observations
MÄLAREN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HAMMARBY	Stated by the publisher on the record this gauge’s observations came from.	With the observations
STABBY	Stated by the publisher on the record this gauge’s observations came from.	With the observations
VATTHOLMA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SKÄLLNORA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
KARLSLUND 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ODENSVIBRON 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
DÖMSTA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HAMMARBY 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
DALKARLSHYTTAN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
KRINGLAN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
GRÄNVAD	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ÅKERS KRUTBRUK	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HÄRNEVI	Stated by the publisher on the record this gauge’s observations came from.	With the observations
VATTHOLMA 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
RANSTA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BERG	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BERNSHAMMAR	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BACKA ÖVRE	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FELLINGSBRO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ALMBRO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
RAMNÄS KRV	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SEMLA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HALLSTAHAMMAR	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SÄVJA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ÅKESTA KVARN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FINNTORPET	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BUSKBÄCKEN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
LERNBO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
UVLUNGE	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BERGSHAMRA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
RÄLLSÄLV	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SÖRSÄTRA	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FIHOLM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
LURBO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ULVA KVARNDAMM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
RÖFORS	Stated by the publisher on the record this gauge’s observations came from.	With the observations
LUGNET	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BORN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FUNDBO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FORSBO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HUSÖN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
RINKABY	Stated by the publisher on the record this gauge’s observations came from.	With the observations
HIDINGEBRO 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ÅTORP-STAVÅN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SUNDBROMARK	Stated by the publisher on the record this gauge’s observations came from.	With the observations
TORSHÄLLA INVALLNING	Stated by the publisher on the record this gauge’s observations came from.	With the observations
UPPSALA BÄRBYLEDEN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SKÄLLNORA ÖVRE	Stated by the publisher on the record this gauge’s observations came from.	With the observations
KUGGEBRO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FRÖGÄRDE	Stated by the publisher on the record this gauge’s observations came from.	With the observations
SÖDRA BRO	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BERGSHAMMAR	Stated by the publisher on the record this gauge’s observations came from.	With the observations
FORSBRON	Stated by the publisher on the record this gauge’s observations came from.	With the observations
KÄLLTORPS INVALLNING	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Sörsätra VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
KLINGGÅRDEN	Stated by the publisher on the record this gauge’s observations came from.	With the observations
BOL	Stated by the publisher on the record this gauge’s observations came from.	With the observations
LÖTAÅ	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Liliansbergsbäcken VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ÅKESTA KVARN 3	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Folsberga VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Taxinge VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Rävsnäs VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Valsta VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Hällsjön VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Laxå VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Täby kyrka VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
ÅKESTA KVARN 2	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Gamla Pershyttan VM	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Stäholmsbäcken 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	72	yes, 3 or more
Years spanned	138	yes, 20 or more
Values held	737,893	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-138.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), Norrström gauge records, accessed 2026-10-05, hydrionis.com/waters/sweden-norrstrom/

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 Norrström 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 confidence2026-09-29

Source: SMHI — Swedish hydrological observations, 138. 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 2026-04-18 to 2026-05-04 (not yet checked), 2026-05-07 to 2026-05-12 (not yet checked), 2026-05-15 to 2026-09-29 (not yet checked). Station in the NORRSTRÖM main drainage basin, 4,044 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 1 October 2026.