The monitoring network within this area

Hydrionis holds 13,487 values from 3 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.

3
Gauges
13,487
Values held
1974–2012
Record spans
266 km²
Area
Gauges within the Nybroån drainage basin
3 monitoring points, positioned as the publisher records them.
Gauges within the Nybroån drainage basinKöpingebro VM, Ö INGELSTAD, ÖRUPSÅNKöpingebro VMÖ INGELSTADÖRUPSÅN

How low, how high and how variable this gauge runs

A hydrograph says what happened; these say how often. Read off ÖRUPSÅN's whole daily record between 1974 and 2001, 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.

0.130 m³/s
Q95 low flow
0.380 m³/s
Q50 median flow
1.400 m³/s
Q10 high flow
Largest day of each water year at ÖRUPSÅN
The highest daily mean discharge in each October-to-September water year, 1974–1999.
Largest day of each water year at ÖRUPSÅNLargest day of each water year at ÖRUPSÅN: ÖRUPSÅN in m³/s, from 1974 to 1999.2.557.510m³/s1974197819821986199019941998ÖRUPSÅN 1974: 5.10 m³/sÖRUPSÅN 1975: 2.80 m³/sÖRUPSÅN 1976: 8.60 m³/sÖRUPSÅN 1977: 2.70 m³/sÖRUPSÅN 1978: 7.00 m³/sÖRUPSÅN 1979: 5.10 m³/sÖRUPSÅN 1980: 11.0 m³/sÖRUPSÅN 1981: 8.20 m³/sÖRUPSÅN 1982: 6.50 m³/sÖRUPSÅN 1983: 4.20 m³/sÖRUPSÅN 1984: 6.30 m³/sÖRUPSÅN 1985: 9.00 m³/sÖRUPSÅN 1986: 10.0 m³/sÖRUPSÅN 1987: 8.90 m³/sÖRUPSÅN 1988: 2.40 m³/sÖRUPSÅN 1989: 4.30 m³/sÖRUPSÅN 1990: 4.90 m³/sÖRUPSÅN 1991: 2.70 m³/sÖRUPSÅN 1992: 3.60 m³/sÖRUPSÅN 1993: 8.70 m³/sÖRUPSÅN 1994: 5.20 m³/sÖRUPSÅN 1995: 2.90 m³/sÖRUPSÅN 1996: 3.40 m³/sÖRUPSÅN 1997: 3.35 m³/sÖRUPSÅN 1998: 5.94 m³/sÖRUPSÅN 1999: 5.55 m³/s

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
PeriodÖRUPSÅN (m³/s)
19745.10
19752.80
19768.60
19772.70
19787.00
19795.10
198011.0
19818.20
19826.50
19834.20
19846.30
19859.00
198610.0
19878.90
19882.40
19894.30
19904.90
19912.70
19923.60
19938.70
19945.20
19952.90
19963.40
19973.35
19985.94
19995.55

The longest record here

Mean river flow at ÖRUPSÅN
Annual means of the daily record, 1975–2000. One gauge, not this drainage area.
Mean river flow at ÖRUPSÅNMean river flow at ÖRUPSÅN: ÖRUPSÅN in m³/s, from 1975 to 2000.0.250.50.751m³/s1975197919831987199119951999ÖRUPSÅN 1975: 0.494 m³/sÖRUPSÅN 1976: 0.380 m³/sÖRUPSÅN 1977: 0.615 m³/sÖRUPSÅN 1978: 0.506 m³/sÖRUPSÅN 1979: 0.632 m³/sÖRUPSÅN 1980: 0.754 m³/sÖRUPSÅN 1981: 1.01 m³/sÖRUPSÅN 1982: 0.882 m³/sÖRUPSÅN 1983: 0.726 m³/sÖRUPSÅN 1984: 0.770 m³/sÖRUPSÅN 1985: 0.729 m³/sÖRUPSÅN 1986: 0.611 m³/sÖRUPSÅN 1987: 0.630 m³/sÖRUPSÅN 1988: 0.871 m³/sÖRUPSÅN 1989: 0.407 m³/sÖRUPSÅN 1990: 0.435 m³/sÖRUPSÅN 1991: 0.534 m³/sÖRUPSÅN 1992: 0.497 m³/sÖRUPSÅN 1993: 0.741 m³/sÖRUPSÅN 1994: 0.974 m³/sÖRUPSÅN 1995: 0.594 m³/sÖRUPSÅN 1996: 0.451 m³/sÖRUPSÅN 1997: 0.327 m³/sÖRUPSÅN 1998: 0.648 m³/sÖRUPSÅN 1999: 0.760 m³/sÖRUPSÅN 2000: 0.548 m³/s

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
PeriodÖRUPSÅN (m³/s)
19750.494
19760.380
19770.615
19780.506
19790.632
19800.754
19811.01
19820.882
19830.726
19840.770
19850.729
19860.611
19870.630
19880.871
19890.407
19900.435
19910.534
19920.497
19930.741
19940.974
19950.594
19960.451
19970.327
19980.648
19990.760
20000.548

Every gauge Hydrionis holds within this area

Gauges within the Nybroån and what each holds
GaugeMeasuresValuesRecord
ÖRUPSÅNmean river flow9,6701974–2001
Ö INGELSTADmean river flow3,1061993–2001
Köpingebro VMmean river flow7112010–2012

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 — 89000. 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
ÖRUPSÅNStated by the publisher on the record this gauge’s observations came from.With the observations
Ö INGELSTADStated by the publisher on the record this gauge’s observations came from.With the observations
Köpingebro VMStated 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 record3yes, 3 or more
Years spanned39yes, 20 or more
Values held13,487yes, 1000 or more
Distinct measurements1no
Publishers measuring it1no
Official identifiers2recorded, not counted

Use this data

Use this data

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.

Suggested citation for Hydrionis

Hydrionis (2026), Nybroån gauge records, accessed 2026-10-05, hydrionis.com/waters/sweden-nybroan/

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 Nybroån 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 confidence2001-01-18

Source: SMHI — Swedish hydrological observations, 2147. 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 2000-01-01 to 2001-01-18 (not yet checked). Station in the NYBROÅN main drainage basin, 65 km². Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 1 October 2026.