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Rheintaler Binnenkanal – Water level, Discharge & Water temperature

Rheintaler Binnenkanal is measured at 6 measuring stations and touches Lake Constance.

Current situation

Rheintaler Binnenkanal at St. Margrethen (inflow) is currently flowing at 2.8 m³/s. Compared with yesterday’s daily average (Coordinated Universal Time, UTC): largely stable; currently below the 30-day median.

Discharge2.8 m³/s
Water level397.91 m a.s.l.
Water temperature15.2 °C

Reference: 30 available daily means from the last 30 complete days (Coordinated Universal Time, UTC), compared with the current individual value. Being close to the median does not describe the spread of values. Gaps can affect daily means. This is neither a seasonal normal nor an official danger level.

How this assessment is made

Reading and sourceBundesamt für Umwelt (BAFU), Kanton St. Gallen (AWE) – hydrodaten.sg.ch · 14 minutes ago

Basis of comparisonCurrent reading, previous day and available 30-day daily means from the same reference station.

CalculationSeepegel uses the highest-flowing current reference station; stations along a river are not added together.

Rheintaler Binnenkanal, St. Margrethen (inflow)

Inflow to the lake: this value describes the river, not the lake level.

Entwässerungskanal des St. Galler Rheintals, mündet kurz vor dem Bodensee in den Alpenrhein (Station BAFU Nr. 2139)

Measurement time: Oct 4, 2026, 7:10 AM

Bundesamt für Umwelt (BAFU) ↗

Discharge over the last 30 days

One line per station. Differences are not a direct inflow balance: measurement times, travel times, storage, withdrawals and tributaries can affect the values.

St. Margrethen (Zufluss)Widnau (Zufluss)

Discharge along the river

Station discharge values compared by flow volume, not in geographical order.

St. Margrethen (inflow)2.8 m³/s
Widnau (inflow)2.2 m³/s

Water level, last 30 days

One line per station. Elevation levels and local centimetre gauges are shown separately.

Widnau, PostbrückeSt. Margrethen (Zufluss)

Water temperature, last 30 days

One line per station with a temperature probe.

St.Margrethen (Temperatur)Widnau, Postbrücke

What has changed?

35 minutes ago

Rheintaler Binnenkanal, St. Margrethen (inflow): new weekly low (2.8 m³/s)

yesterday

↓Rheintaler Binnenkanal, Widnau, Postbrücke: reading fell by -2.1 °C

yesterday

Rheintaler Binnenkanal, St. Margrethen (inflow): new weekly low (2.8 m³/s)

yesterday

Rheintaler Binnenkanal, St. Margrethen (inflow): new weekly low (2.8 m³/s)

2 days ago

Rheintaler Binnenkanal, Widnau (inflow): new weekly low (2.1 m³/s)

3 days ago

Rheintaler Binnenkanal, Widnau (inflow): new weekly low (2.1 m³/s)

Stations on the map

Each marker opens the corresponding station details.

Connected lakes

Water knowledge

Understanding Rheintaler Binnenkanal

The Rheintaler Binnenkanal collects side streams and drainage water from the valley plain, reaching Lake Constance through the Old Rhine. It is not the neighbouring Alpine Rhine. Compare it with its own record: a small discharge relative to the Rhine says nothing about local flood risk.

This overview includes 6 monitoring stations for water level, discharge, and water temperature. Not every station provides every measurement. Track changes at the same station, checking the timestamp, unit and source notes. Related waters in this overview: Lake Constance.

Discharge in m³/s is a volume per second, not the speed of the current. Station comparisons must account for location, measurement time and water travel time. A higher reading is neither automatically a flood warning nor an indication that the river is navigable.