Spiez – Water level
This station shows Water level at Lake Thun. Values apply to this location, not to an average of all stations on the water body.
Current level
557.72m a.s.l.→
Measurement time:
Current FOEN data are unchecked raw data and may be corrected later. A recent measurement time does not mean that a value has been validated. FOEN data quality
Current context
Largely stable over the last 24 hours.
What does this change mean?
“Largely stable” means the change from the comparison value about 24 hours earlier is less than 2 cm. The chart shows fluctuations in between.
We compare values at the same station at two points in time. If no suitably timed comparison value exists, we omit that statement. An unchanged value does not mean a seasonal normal or an all-clear. Changes below the displayed precision are also described as stable.
Lake Thun: what is a normal water level?
The median for the same calendar day is 557.77 m a.s.l.; the current value is 5 cm below it. The 557.74–557.80 m a.s.l. band contains the middle 50 percent of reference values from 1991-2020. Being outside it is less usual, but is not in itself a hazard level.
How is the reference level determined?
The reference comes from FOEN daily statistics for this calendar day. The seasonal median varies throughout the year and is not a fixed target level. The middle 50% is the range between the 25th and 75th percentiles, not a safety limit. The 30-day comparison describes only the recent development.
Past 30 days at a glance
Very lowMedian of available daily means: 557.75 m a.s.l. · 30 days in the comparison window.
The current individual value is compared with available daily means from the last 30 complete days, using Coordinated Universal Time (UTC) for day boundaries. Min. and max. refer to daily means, not individual peaks. A day counts when values exist; gaps can affect its mean. For model series, this compares model values. “High” refers to this short window, not an official danger level or a seasonal normal.
Source
Spiez
Measurement at the lake. Inflow and outflow stations are identified separately.
Measurement time: Nov 7, 2026, 2:00 PM
Bundesamt für Umwelt (BAFU) ↗Change across the visible readings
-2 cm
10/31 – 11/07
Explore readings with your finger or mouse. Arrow keys also work in the chart.
Over the past 24 hours the value ranged between 557.72 m a.s.l. and 557.73 m a.s.l. and stayed largely stable.
Based on 144 available values from Nov 6, 2026, 2:00 PM to Nov 7, 2026, 2:00 PM (Swiss local time). The range describes stored values, not necessarily every peak that occurred.
The forecast value is expected to fall by about 3 cm across the 6 displayed forecast days.
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.
Understanding readings at Spiez
A level in metres above sea level describes the surface elevation in the stated datum, not water depth. Use the same station for trends. Networks or countries may use different vertical datums, so a numerical difference does not necessarily represent a physical height difference.
Check the time and source first, then the chart and unit. Missing or disrupted readings cannot support a reliable current assessment. A short comparison describes recent changes, not flood probability. Follow official warnings and local instructions for safety decisions.
Other stations on Lake Thun
Station information
- Lake
- Lake Thun
- Location
- Spiez
- Canton
- BE
- Measured quantities
- Water level
- Station number
- 2093
- Coordinates
- 46.6847, 7.6772
- Source
- Bundesamt für Umwelt BAFU