The monitoring network within this area

Hydrionis holds 532,595 values from 33 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.

33
Gauges
532,595
Values held
1900–2026
Record spans
30,638 km²
Area
Gauges within the Ångermanälven drainage basin
33 monitoring points, positioned as the publisher records them.
Gauges within the Ångermanälven drainage basinANKARVATTNET, BORGA, BORGA NEDRE, BORKAN, BRATTÅSEN, FLÅSJÖN NEDRE, FORSMO, FORSÅS, FÄRJETORP, FÄTTJAURE, HJÄLTA KRV, HOVERUDDE, INVIKEN, JORMVATTNET, KILFORSENS KRV, KILVAMSKLIPPEN, LAJKSJÖN 2, LASELE KRV, LÅNGSELE, MAKSJÖN, MALGOMAJS KRV, MAKSJÖSTRAND, MESJÖN ÖVRE, NEDRE KILFORSEN, NYLUSPEN, RÖÅN, SOLLEFTEÅ KRV, SPORRSJÖN VÄNGELÄLV 2, STRÖMSVATTUDAL 3, TÅSJÖ, TÅSJÖEDET, VOJMSJÖLUSPEN, ÅSELEANKARVATTNETBORGABORGA NEDREBORKANBRATTÅSENFLÅSJÖN NEDREFORSMOFORSÅSFÄRJETORPFÄTTJAUREHJÄLTA KRVHOVERUDDEINVIKENJORMVATTNETKILFORSENS KRVKILVAMSKLIPPENLAJKSJÖN 2LASELE KRVLÅNGSELEMAKSJÖNMALGOMAJS KRVMAKSJÖSTRANDMESJÖN ÖVRENEDRE KILFORSENNYLUSPENRÖÅNSOLLEFTEÅ KRVSPORRSJÖN VÄNGELÄLV 2STRÖMSVATTUDAL 3TÅSJÖTÅSJÖEDETVOJMSJÖLUSPENÅSELE

The longest record here

Mean river flow at RÖÅN
Annual means of the daily record, 1944–2025. One gauge, not this drainage area.
Mean river flow at RÖÅNMean river flow at RÖÅN: RÖÅN in m³/s, from 1944 to 2025.246810m³/s19441955196619771988199920102021

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
PeriodRÖÅN (m³/s)
19445.82
19458.46
19464.98
19473.48
19485.61
19494.96
19506.85
19515.50
19526.47
19536.91
19545.76
19554.63
19564.99
19574.64
19584.67
19595.04
19605.67
19618.07
19625.18
19633.51
19646.00
19655.20
19665.73
19677.98
19685.03
19693.31
19703.81
19714.94
19725.59
19735.06
19746.34
19755.45
19763.09
19775.49
19784.78
19795.25
19805.81
19816.42
19825.14
19837.11
19845.58
19858.49
19865.61
19877.04
19886.13
19895.78
19904.94
19915.09
19926.20
19939.41
19944.78
19955.37
19964.31
19975.31
19987.46
19995.70
20008.20
20019.09
20024.53
20034.84
20044.41
20057.73
20066.17
20075.74
20084.15
20096.83
20105.63
20116.65
20128.49
20135.99
20144.92
20156.16
20164.34
20175.08
20184.73
20194.98
20206.07
20215.84
20226.76
20235.82
20246.81
20256.69

Every gauge Hydrionis holds within this area

Gauges within the Ångermanälven and what each holds
GaugeMeasuresValuesRecord
RÖÅNmean river flow30,3401943–2026
ANKARVATTNETmean river flow30,1871944–2026
FLÅSJÖN NEDREmean river flow28,6771947–2025
VOJMSJÖLUSPENmean river flow28,2381948–2025
HJÄLTA KRVmean river flow28,1161949–2025
FÄTTJAUREmean river flow26,7501945–2026
KILFORSENS KRVmean river flow26,6551953–2025
BORGA NEDREmean river flow25,1941957–2025
LASELE KRVmean river flow25,1941957–2025
KILVAMSKLIPPENmean river flow25,0731958–2026
SOLLEFTEÅ KRVmean river flow21,9071966–2025
SPORRSJÖN VÄNGELÄLV 2mean river flow19,0771973–2025
LÅNGSELEmean river flow17,7461900–1948
STRÖMSVATTUDAL 3mean river flow17,1591979–2025
MESJÖN ÖVREmean river flow16,1621982–2026
LAJKSJÖN 2mean river flow16,0441981–2026
MALGOMAJS KRVmean river flow15,6981983–2025
NYLUSPENmean river flow14,4881909–1948
FORSMOmean river flow13,5141909–1945
MAKSJÖNmean river flow12,6921922–1956
NEDRE KILFORSENmean river flow11,5371921–1952
JORMVATTNETmean river flow10,6531913–1942
ÅSELEmean river flow9,3451913–1938
BRATTÅSENmean river flow8,5231913–1936
TÅSJÖmean river flow8,2801913–1935
BORKANmean river flow7,5791944–1964
HOVERUDDEmean river flow7,1241913–1932
FORSÅSmean river flow6,6041913–1931
BORGAmean river flow6,4461922–1950
MAKSJÖSTRANDmean river flow5,1131909–1922
FÄRJETORPmean river flow4,5661913–1925
TÅSJÖEDETmean river flow4,0181936–1946
INVIKENmean river flow3,8961922–1932

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 — 38000. 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
RÖÅNStated by the publisher on the record this gauge’s observations came from.With the observations
ANKARVATTNETStated by the publisher on the record this gauge’s observations came from.With the observations
FLÅSJÖN NEDREStated by the publisher on the record this gauge’s observations came from.With the observations
VOJMSJÖLUSPENStated by the publisher on the record this gauge’s observations came from.With the observations
HJÄLTA KRVStated by the publisher on the record this gauge’s observations came from.With the observations
FÄTTJAUREStated by the publisher on the record this gauge’s observations came from.With the observations
KILFORSENS KRVStated by the publisher on the record this gauge’s observations came from.With the observations
BORGA NEDREStated by the publisher on the record this gauge’s observations came from.With the observations
LASELE KRVStated by the publisher on the record this gauge’s observations came from.With the observations
KILVAMSKLIPPENStated by the publisher on the record this gauge’s observations came from.With the observations
SOLLEFTEÅ KRVStated by the publisher on the record this gauge’s observations came from.With the observations
SPORRSJÖN VÄNGELÄLV 2Stated by the publisher on the record this gauge’s observations came from.With the observations
LÅNGSELEStated by the publisher on the record this gauge’s observations came from.With the observations
STRÖMSVATTUDAL 3Stated by the publisher on the record this gauge’s observations came from.With the observations
MESJÖN ÖVREStated by the publisher on the record this gauge’s observations came from.With the observations
LAJKSJÖN 2Stated by the publisher on the record this gauge’s observations came from.With the observations
MALGOMAJS KRVStated by the publisher on the record this gauge’s observations came from.With the observations
NYLUSPENStated by the publisher on the record this gauge’s observations came from.With the observations
FORSMOStated by the publisher on the record this gauge’s observations came from.With the observations
MAKSJÖNStated by the publisher on the record this gauge’s observations came from.With the observations
NEDRE KILFORSENStated by the publisher on the record this gauge’s observations came from.With the observations
JORMVATTNETStated by the publisher on the record this gauge’s observations came from.With the observations
ÅSELEStated by the publisher on the record this gauge’s observations came from.With the observations
BRATTÅSENStated by the publisher on the record this gauge’s observations came from.With the observations
TÅSJÖStated by the publisher on the record this gauge’s observations came from.With the observations
BORKANStated by the publisher on the record this gauge’s observations came from.With the observations
HOVERUDDEStated by the publisher on the record this gauge’s observations came from.With the observations
FORSÅSStated by the publisher on the record this gauge’s observations came from.With the observations
BORGAStated by the publisher on the record this gauge’s observations came from.With the observations
MAKSJÖSTRANDStated by the publisher on the record this gauge’s observations came from.With the observations
FÄRJETORPStated by the publisher on the record this gauge’s observations came from.With the observations
TÅSJÖEDETStated by the publisher on the record this gauge’s observations came from.With the observations
INVIKENStated 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 record33yes, 3 or more
Years spanned127yes, 20 or more
Values held532,595yes, 1000 or more
Distinct measurements1no
Publishers measuring it1no
Official identifiers2recorded, not counted

Where these figures come from

MeasuredMedium confidence2026-08-24

Source: SMHISwedish hydrological observations, 1378. 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 2026-05-03 to 2026-08-24 (not yet checked). Station in the ÅNGERMANÄLVEN main drainage basin, 584 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 25 August 2026.