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.
1926-68 DATA FROM PORTSMOUTH (NAVY YARD) SITE 1969-1972 DATA FROM SEAVEY IS, BACK CHANNEL SITE 1973 TO DATE DATA FROM SEAVEY IS,BERTH 2 SITE
Documentation added 1991-06-11
Seavey Island 960/177 RLR(1972) is 12.9m below BM12
Documentation added 1993-07-12
Seavey Island 960/177 RLR(1972) is 12.9m below BM12
Documentation added 2012-02-15
Seavey Island is now an Historic station. Last data received was that for 1986. Information from the NOAA website confirms Primary benchmark to be NO 21 1975 $.59m above TGZ. Benchmark 12 from the original RLR diagram no longer features on the NOAA website.