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.
Low values in early 1977 follow a data gap but are probably correct - for example, compare to 960/081 Baltimore. Previously this data had been flagged but because Baltimore compares well the flags have been removed.
Documentation added 2011-10-12
Using NOAA data the RLR diagram has been revised. Previous Primary benchmark was BM 1 now referred to as BM 1 1928. Original value was 2.957m above the gauge datum. In 1986 this value was 2.949m and in 2003 2.942m New Primary benchmark is BM 7 with a value of 2.876m in 1986 and 2.869m in 2003.