Lake Geneva   (Its surface)                                                                       >>>"Home"...)

2 general facts about its surface:

1) Can you see someone standing on the opposite shore?    NO
    How much is missing?                            ~ 2.3 m (7.5 ft)
     (h = r-½ root 4r2 - s2)

Lake Geneva .gif (bytes)

2) What are "seiches"?

- They are local variations in the level of the lake ("stationary waves").

- They were named "seiches" by F.-A. Forel, (1841-1912), who was the first to explain their

- They can be caused by strong winds and by a variation in the atmospheric pressure.

- The lake's water level could vary
 - according to some, by 30 cm (11.8 in)...
 - according to others, by 20-40 cm (8-16 in)...
 - or by 0.6 to 1.5 m (2 to 5 ft) in half an hour...
 - even by 2 m (about 7 ft). :
  The maximum height of a recorded seiche at Geneva is just over 6 ft. (October 1841))

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