Sihl – Water level, Discharge & Water temperature

Sihl is measured at 7 measuring stations and touches Lake Zurich.

Current situation

Sihl at Sihl Geissboden is currently flowing at 2.3 m³/s. Compared with yesterday’s daily average (Coordinated Universal Time, UTC): largely stable; currently below the 30-day median.

Discharge2.3 m³/sOct 4, 2026, 8:18 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 Schwyz – kiwis.innetag.ch, Kanton Zürich (AWEL) – HydroPro, Bundesamt für Umwelt (BAFU) · 21 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.

Sihl Geissboden

Measurement at this river section; other sections may differ.

Measurement time: Oct 4, 2026, 8:18 AM

Kanton Schwyz – kiwis.innetag.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.

Sihl GeissbodenBlattwag, HüttenZürich (Zufluss)Sihl SchlagenUnteriberg

Discharge along the river

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

Sihl Geissboden2.3 m³/s

Blattwag, Hütten2.1 m³/s

Zürich (inflow)1.9 m³/s

Sihl Schlagen1.8 m³/s

Unteriberg0.2 m³/s

Water level, last 30 days

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

Zürich (Zufluss)

Water temperature, last 30 days

One line per station with a temperature probe.

Zürich (Temperatur)

FOEN forecast for the Zürich (inflow) station. Not available for every station.

The forecast value is expected to rise by about 2.2 m³/s across the 6 displayed forecast days.

Today10/041.9m³/s

Mon10/052.1m³/s

Tue10/062.2m³/s

Wed10/072.3m³/s

Thu10/082.6m³/s

Fri10/094.0m³/s

Forecast

Source: FOEN forecast

Median
Min./Max.
Measured

The line shows the median of the FOEN model forecasts at each timestamp; the band shows their minimum and maximum. Daily cards average the available hourly medians, which is not a daily median. A wider band means greater spread between model paths, not guaranteed upper or lower limits. Partial days may contain fewer forecast values.

What has changed?

9 hours ago

↓Sihl bei Studen, Unteriberg: reading fell by -0.2 m³/s

yesterday

↑Sihl Schlagen: reading rose by +0.4 m³/s

yesterday

↑Sihl bei Studen, Unteriberg: reading rose by +0.2 m³/s

2 days ago

↓Sihl Schlagen: reading fell by -0.5 m³/s

2 days ago

↑Sihl bei Studen, Unteriberg: reading rose by +0.1 m³/s

3 days ago

↓Sihl bei Studen, Unteriberg: reading fell by 0.0 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 Zurich

Water knowledge

Understanding Sihl

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

This overview includes 7 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 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.