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.
Dauphin Island 940/037 RLR(1973) is 12.2m below BM1
Documentation added 1993-07-29
Many stations on the Gulf coast have large values for September 1961.
Documentation added 2011-12-20
Using NOAA data the RLR diagram has been revised. Primary benchmark remains BM1 now given the name as appears on the NOAA website NO 1 1960 6.288m above gauge datum.