The monitoring network within this area

Hydrionis holds 215,193 values from 10 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.

10
Gauges
215,193
Values held
1900–2026
Record spans
4,441 km²
Area
Gauges within the Emån drainage basin
10 monitoring points, positioned as the publisher records them.
Gauges within the Emån drainage basinBLANKASTRÖM, BRUSAFORS, EMSFORS, FORSHULTESJÖN NEDRE, JÄRNFORSEN, KLÄMMA, RÖDJENÄS, SKÄRSBODA, STENINGE, STENSÅKRABLANKASTRÖMBRUSAFORSEMSFORSFORSHULTESJÖN NEDREJÄRNFORSENKLÄMMARÖDJENÄSSKÄRSBODASTENINGESTENSÅKRA

The longest record here

Mean river flow at BLANKASTRÖM
Annual means of the daily record, 1928–2025. One gauge, not this drainage area.
Mean river flow at BLANKASTRÖMMean river flow at BLANKASTRÖM: BLANKASTRÖM in m³/s, from 1928 to 2025.02040m³/s19281941195419671980199320062019

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
PeriodBLANKASTRÖM (m³/s)
192832.9
192924.2
193027.4
193136.6
193214.6
193312.7
193413.8
193520.0
193631.5
193722.4
193817.0
193918.3
194017.1
194112.3
194217.4
194324.7
194428.7
194534.7
194638.6
194715.8
194826.7
194914.4
195030.3
195133.9
195229.7
195323.0
195426.5
195521.2
195616.7
195727.8
195832.8
195925.3
196027.2
196134.8
196232.0
196318.1
196412.0
196518.9
196638.9
196733.3
196827.5
196928.5
197029.3
197117.6
197216.5
197315.4
197422.9
197522.9
19768.89
197732.8
197824.5
197925.1
198025.1
198128.2
198219.9
198320.8
198425.1
198532.6
198627.3
198727.1
198838.1
198914.3
199021.2
199120.2
199215.7
199317.1
199430.6
199531.2
199617.4
199718.2
199835.9
199927.1
200024.3
200127.0
200225.6
200322.1
200430.5
200521.0
200631.2
200740.2
200828.2
200916.5
201031.9
201125.3
201229.2
201322.8
201421.4
201518.7
20169.80
201714.3
201819.2
201914.1
202018.9
202119.6
202215.2
202323.2
202424.5
202512.2

Every gauge Hydrionis holds within this area

Gauges within the Emån and what each holds
GaugeMeasuresValuesRecord
BLANKASTRÖMmean river flow35,7871928–2025
BRUSAFORSmean river flow26,5131954–2026
EMSFORSmean river flow26,2091954–2026
SKÄRSBODAmean river flow23,9451961–2026
FORSHULTESJÖN NEDREmean river flow23,8651954–2020
JÄRNFORSENmean river flow22,3611900–1961
STENINGEmean river flow20,1221965–2020
RÖDJENÄSmean river flow19,1451909–1961
STENSÅKRAmean river flow15,4201984–2026
KLÄMMAmean river flow1,8261931–1935

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 — 74000. 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
BLANKASTRÖMStated by the publisher on the record this gauge’s observations came from.With the observations
BRUSAFORSStated by the publisher on the record this gauge’s observations came from.With the observations
EMSFORSStated by the publisher on the record this gauge’s observations came from.With the observations
SKÄRSBODAStated by the publisher on the record this gauge’s observations came from.With the observations
FORSHULTESJÖN NEDREStated by the publisher on the record this gauge’s observations came from.With the observations
JÄRNFORSENStated by the publisher on the record this gauge’s observations came from.With the observations
STENINGEStated by the publisher on the record this gauge’s observations came from.With the observations
RÖDJENÄSStated by the publisher on the record this gauge’s observations came from.With the observations
STENSÅKRAStated by the publisher on the record this gauge’s observations came from.With the observations
KLÄMMAStated 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 record10yes, 3 or more
Years spanned127yes, 20 or more
Values held215,193yes, 1000 or more
Distinct measurements1no
Publishers measuring it1no
Official identifiers2recorded, not counted

Where these figures come from

MeasuredHigh confidence2025-12-24

Source: SMHISwedish hydrological observations, 1806. 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 EMÅN main drainage basin, 3,939 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 25 August 2026.