1942 data supplied by B.O.D.C.DATA SUPPLIED BY AUTHORITY NO. 66 1956-1963 data supplied by the National Geographical Institute, France
Documentation added 1991-06-11
La Pallice 190/121 RLR(1978) is 12.2m below BM C1(NGFN.6)1966
Documentation added 1993-03-16
There are anomalously low values for Oct 62 - April 63.
Documentation added 2001-12-06
New acoustic gauge installed at La Pallice 28/4/1997 at 4609N 00113W (prev. 4610N). This was replaced by a radar (Krohne BM70) gauge on 23/4/2001.
Documentation added 2012-03-29
Name of the Primary benchmark has been changed to IGN O.O.K3 - 126 9.107m above Zero Hydrographique.
Documentation added 2014-09-24
Using values from the SONEL website the latitude and longitude for La Rochelle have been revised. The downloaded data from SONEL contained some additional data points particularly for the early 1940's. Because of this the complete dataset has been reloaded.