Rietaach – Water level, Discharge & Water temperature

Rietaach is measured at 3 measuring stations and touches Lake Constance.

Current situation

Rietaach at Altstätten (inflow) is currently flowing at 0.0 m³/s. Compared with yesterday’s daily average (Coordinated Universal Time, UTC): largely stable; currently close to the short-term median.

Discharge0.0 m³/sOct 4, 2026, 3:00 AM

Water level413.74 m a.s.l.Oct 4, 2026, 3:00 AM

Water temperature17.0 °COct 4, 2026, 3:00 AM

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 sourceKanton St. Gallen (AWE) – hydrodaten.sg.ch · 38 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.

Rietaach, Altstätten (inflow)

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

Rheintal-Zubringer bei Altstätten, mündet in den Alpenrhein (Kanton SG, Station Nr. 10523)

Measurement time: Oct 4, 2026, 3:00 AM

Kanton St. Gallen (AWE) – hydrodaten.sg.ch ↗

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.

Altstätten (Zufluss)

Water level, last 30 days

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

Altstätten, Eschen

Water temperature, last 30 days

One line per station with a temperature probe.

Altstätten, Eschen

What has changed?

17 hours ago

↓Rietaach, Altstätten, Eschen: reading fell by -2.1 °C

22 hours ago

↓Rietaach, Altstätten (inflow): reading fell by 0.0 m³/s

2 days ago

↑Rietaach, Altstätten (inflow): reading rose by +0.0 m³/s

3 days ago

↑Rietaach, Altstätten (inflow): reading rose by +0.0 m³/s

4 days ago

↑Rietaach, Altstätten (inflow): reading rose by +0.0 m³/s

5 days ago

Rietaach, Altstätten, Eschen: new weekly low (413.73 m a.s.l.)

Readings and stations

All recorded quantities with measurement time, data quality and official source.

Stations on the map

Each marker opens the corresponding station details.

Connected lakes

Lake Constance

Water knowledge

Understanding Rietaach

Rietaach: this overview puts the available stations and measurements in context. The exact location matters, not just the water body's name.

This overview includes 3 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.