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Lake Baldegg — Year comparison & records

The 2026 water level compared to last year and to the 1991-2020 reference period: median, typical range (25th-75th percentile) and the extremes of those 30 years.

Level compared with usual

Very lowNormalVery high
usual range

Very low — 52 cm below the median — very low for this calendar day (reference period 1991-2020).

How unusual is this?

Values for this time of year are compared over 1991-2020. The middle 50% lie between 462.85 m a.s.l. and 463.14 m a.s.l.. Below the 5th-percentile boundary (462.67 m a.s.l.) is very low; above the 95th-percentile boundary (463.51 m a.s.l.) is very high.

This seasonal assessment uses published quantiles. It is not a return period or forecast and cannot count individual historical years.

  • Current year 2026
  • Previous year 2025
  • Median
  • 25th-75th percentile
  • Maximum / minimum

How to read the chart: the thick line is the current year, the thin one the median of the 1991-2020 reference period. The shaded band shows the normal range (25th–75th percentile), the dotted lines the maximum and minimum. Values above the band are unusually high for the season, below unusually low – but not an official warning.

What historical readings show

What the year comparison shows for Lake Baldegg

Typical low point

462.93 m a.s.l.

October 5

Typical high point

463.19 m a.s.l.

January 3

Typical range

26 cm

Difference between daily medians

In the 1991-2020 reference period, Lake Baldegg's seasonal median is lowest on October 5 at 462.93 m a.s.l. and highest on January 3 at 463.19 m a.s.l.. The difference between these typical points is 26 cm. This describes the average seasonal cycle, not the largest individual fluctuation.

The 2026 curve currently contains 311 calendar days. On November 7 it shows 462.47 m a.s.l., which is 53 cm below that calendar day's median of 463.00 m a.s.l.. Compared with the same calendar day in 2025, the value is 73 cm lower.

For the comparison years 1991-2020, the highest displayed value is 464.13 m a.s.l. on August 10 and the lowest is 462.56 m a.s.l. on August 8. These extremes apply to this period, not the entire measurement history.

The analysis uses the water-level series from Baldeggersee, Gelfingen. Matching calendar days are compared, and the median is the middle value of the reference years. This classification does not replace flood warnings or local safety information.

Highest value (1991-2020)464.13 m a.s.l.
Lowest value (1991-2020)462.56 m a.s.l.

Source: FOEN, 1991-2020 reference period