Reference data analysis
What the year comparison shows for Lake St. Moritz
Typical low point
1,767.81 m a.s.l.
April 13
Typical high point
1,768.04 m a.s.l.
June 8
Typical range
23 cm
Difference between daily medians
In the 1991-2020 reference period, Lake St. Moritz's seasonal median is lowest on April 13 at 1,767.81 m a.s.l. and highest on June 8 at 1,768.04 m a.s.l.. The difference between these typical points is 23 cm. This describes the average seasonal cycle, not the largest individual fluctuation.
The 2026 curve currently contains 265 calendar days. On September 22 it shows 1,767.98 m a.s.l., which is 8 cm above that calendar day's median of 1,767.89 m a.s.l.. Compared with the same calendar day in 2025, the value is 13 cm higher.
Within the 1991-2020 reference period, the envelope reaches its highest value of 1,768.19 m a.s.l. on November 7 and its lowest value of 1,767.28 m a.s.l. on October 29. These are extremes of the displayed reference period, not all-time records.
The analysis uses the water-level series from St. Moritzersee, St. Moritz. 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.