Aabach – Water level, Discharge & Water temperature

Aabach is measured at 16 measuring stations and touches Lake Greifen, Lake Hallwil, Lake Zurich.

Current situation

Aabach at Lenzburg is currently flowing at 0.3 m³/s. Compared with yesterday’s daily average (Coordinated Universal Time, UTC): largely stable; currently below the 30-day median.

Discharge0.3 m³/sOct 4, 2026, 6:50 AM

Water level392.10 m a.s.l.Oct 4, 2026, 7:00 AM

Water temperature16.7 °COct 4, 2026, 7:00 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 Zürich (AWEL) – HydroPro, Kanton Aargau (BVU) – ag.ch/hydrometrie, Bundesamt für Umwelt (BAFU), Kanton St. Gallen (AWE) – hydrodaten.sg.ch · 32 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.

Aabach, Lenzburg

Measurement at this river section; other sections may differ.

Measurement time: Oct 4, 2026, 6:50 AM

Kanton Aargau (BVU) – ag.ch/hydrometrie ↗

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.

LenzburgSeengenNiederuster, UsterMönchaltorf (Zufluss)Schmerikon (Zufluss)Käpfnach, HorgenHitzkirch (Zufluss)

Discharge along the river

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

Lenzburg0.3 m³/s

Seengen0.3 m³/s

Niederuster, Uster0.2 m³/s

Schmerikon (inflow)0.1 m³/s

Mönchaltorf (inflow)0.0 m³/s

Käpfnach, Horgen0.0 m³/s

Hitzkirch (inflow)0.0 m³/s

Water level, last 30 days

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

Hitzkirch (Zufluss)SeengenSchmerikon, Gross AllmeindLenzburg

Water temperature, last 30 days

One line per station with a temperature probe.

SeengenLenzburgNiederuster, UsterMönchaltorf (Temperatur)Schmerikon, Gross Allmeind

What has changed?

3 minutes ago

Aabach, Seengen: new weekly low (17.0 °C)

16 hours ago

↓Aabach, Niederuster, Uster: reading fell by -0.1 m³/s

yesterday

↓Aabach, Mönchaltorf (inflow): reading fell by -0.4 m³/s

yesterday

↓Aabach, Käpfnach, Horgen: reading fell by -0.1 m³/s

yesterday

↓Aabach, Schmerikon, Gross Allmeind: reading fell by -0.20 m a.s.l.

yesterday

↓Aabach, Schmerikon (inflow): reading fell by -0.1 m³/s

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 Greifen Lake Hallwil Lake Zurich

Water knowledge

Understanding Aabach

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

This overview includes 16 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 Greifen, Lake Hallwil, and Lake Zurich.

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.