Drainage basin
Norrström
72 monitoring stations within this area in Sweden, holding 737,225 values between 1889 and 2026. An area that drains to one outlet, not a single channel. The gauges below are within it and sit on different watercourses inside it.
The monitoring network within this area
Hydrionis holds 737,225 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.
72
Gauges
737,225
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.
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
| 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
| Gauge | Measures | Values | Record |
|---|---|---|---|
| ÖVRE HYNDEVAD | mean river flow | 50,273 | 1889–2026 |
| MÄLAREN | mean river flow | 45,868 | 1901–2026 |
| HAMMARBY | mean river flow | 25,294 | 1909–1978 |
| STABBY | mean river flow | 24,780 | 1958–2026 |
| VATTHOLMA | mean river flow | 22,980 | 1916–1979 |
| SKÄLLNORA | mean river flow | 21,526 | 1961–2020 |
| KARLSLUND 2 | mean river flow | 19,013 | 1974–2026 |
| ODENSVIBRON 2 | mean river flow | 17,549 | 1978–2026 |
| DÖMSTA | mean river flow | 17,547 | 1978–2026 |
| HAMMARBY 2 | mean river flow | 17,514 | 1978–2026 |
| DALKARLSHYTTAN | mean river flow | 17,513 | 1978–2026 |
| KRINGLAN | mean river flow | 17,510 | 1978–2026 |
| GRÄNVAD | mean river flow | 17,480 | 1978–2026 |
| ÅKERS KRUTBRUK | mean river flow | 17,236 | 1979–2026 |
| HÄRNEVI | mean river flow | 17,148 | 1979–2026 |
| VATTHOLMA 2 | mean river flow | 17,148 | 1979–2026 |
| RANSTA | mean river flow | 17,147 | 1979–2026 |
| BERG | mean river flow | 16,791 | 1980–2026 |
| BERNSHAMMAR | mean river flow | 16,025 | 1951–1995 |
| BACKA ÖVRE | mean river flow | 15,951 | 1945–1989 |
| FELLINGSBRO | mean river flow | 15,889 | 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 | 13,344 | 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 | 4,055 | 2015–2026 |
| SUNDBROMARK | mean river flow | 3,877 | 1958–1968 |
| TORSHÄLLA INVALLNING | mean river flow | 3,836 | 1913–1923 |
| UPPSALA BÄRBYLEDEN | mean river flow | 3,242 | 2017–2026 |
| SKÄLLNORA ÖVRE | mean river flow | 3,169 | 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 |
| BOL | mean river flow | 1,826 | 1918–1923 |
| KLINGGÅRDEN | mean river flow | 1,794 | 2021–2026 |
| LÖTAÅ | mean river flow | 1,393 | 1979–1983 |
| Liliansbergsbäcken VM | mean river flow | 1,091 | 2008–2011 |
| Folsberga VM | mean river flow | 1,048 | 2010–2013 |
| ÅKESTA KVARN 3 | mean river flow | 1,016 | 2023–2026 |
| 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.
| 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 |
| BOL | 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 |
| 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 |
| Folsberga 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 |
| 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.
| Signal | Held | Counts |
|---|---|---|
| Gauges holding a real record | 72 | yes, 3 or more |
| Years spanned | 138 | yes, 20 or more |
| Values held | 737,225 | yes, 1000 or more |
| Distinct measurements | 1 | no |
| Publishers measuring it | 1 | no |
| Official identifiers | 2 | recorded, not counted |
Where these figures come from
MeasuredMedium confidence2026-08-23
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 2026-08-23 (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 25 August 2026.