Reference data analysis
What the year comparison shows for Lake Maggiore
Typical low point
192.97 m a.s.l.
August 26
Typical high point
193.90 m a.s.l.
December 9
Typical range
94 cm
Difference between daily medians
In the 1991-2020 reference period, Lake Maggiore's seasonal median is lowest on August 26 at 192.97 m a.s.l. and highest on December 9 at 193.90 m a.s.l.. The difference between these typical points is 94 cm. This describes the average seasonal cycle, not the largest individual fluctuation.
The 2026 curve currently contains 266 calendar days. On September 23 it shows 192.57 m a.s.l., which is 64 cm below that calendar day's median of 193.22 m a.s.l.. Compared with the same calendar day in 2025, the value is 127 cm lower.
Within the 1991-2020 reference period, the envelope reaches its highest value of 197.57 m a.s.l. on October 16 and its lowest value of 192.12 m a.s.l. on January 3. These are extremes of the displayed reference period, not all-time records.
The analysis uses the water-level series from Locarno. 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.