Please note: In many cases, the station position in our database is accurate
to only one minute. Thus, the tide gauge may not appear to be on the coast.
Before 1978 values based on readings of high and low waters
Documentation - date unknown
Genova is an historic station last data 1997
Documentation added 1992-08-06
Italian levels may be influenced by the Messina earthquake of 1908 - See Bottari et al., Tectonophysics 202, 269-275, 1992
Documentation added 1993-03-17
The stations Porto Maurizio (250/001), Napoli Arsenale (250/041) and Napoli Mandraccio (250/051) appear to each have a datum shift around 1910. Evidence for regional coherence?
Documentation added 1994-04-22
Data for 1979-88 revised April 1994
Documentation added 1994-07-14
Anomalously large value for December 1989 queried with authority.
Documentation added 1998-12-07
For a discussion of land movements in the area of the Gulf of Naples, see the paper by G.Berrino in Tectonophysics,294,323-332,1998.
Documentation added 1999-04-28
1989 revised, 28th April 1999
Documentation added 2000-01-25
Genova 250/011 RLR(1963) is 10.2m below BM
Documentation added 2016-01-22
A value of MTL-MSL=-2 mm has been applied to the RLR data for the period 1884-1977. The values were derived using the GESLA2 (high-frequency tide gauge) dataset using harmonic constituents.
Data Authority
Istituto Idrografico della Marina Passo Osservatorio 4 16134 Genova