What historical readings show
What the year comparison shows for Lake Neuchâtel
Typical low point
429.05 m a.s.l.
December 1
Typical high point
429.47 m a.s.l.
May 16
Typical range
42 cm
Difference between daily medians
In the 1991-2020 reference period, Lake Neuchâtel's seasonal median is lowest on December 1 at 429.05 m a.s.l. and highest on May 16 at 429.47 m a.s.l.. The difference between these typical points is 42 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 428.91 m a.s.l., which is 20 cm below that calendar day's median of 429.11 m a.s.l.. Compared with the same calendar day in 2025, the value is 36 cm lower.
For the comparison years 1991-2020, the highest displayed value is 430.44 m a.s.l. on May 8 and the lowest is 428.75 m a.s.l. on January 30. These extremes apply to this period, not the entire measurement history.
The analysis uses the water-level series from Neuchâtel, Nid-du-Crô. 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.