Data



Data Notes



Extracted from Database

15 Apr 2019

SEAVEY ISLAND

Station Information

Station ID: 288
Latitude: 43.08
Longitude: -70.741667
Coastline code: 960
Station code: 177
Country: UNITED STATES
Time span of data: 1926 – 1986
Completeness (%): 87
Date of last update: 26 Oct 1990

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

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.

Tide Gauge Data

Plot of monthly mean sea level data at SEAVEY ISLAND.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at SEAVEY ISLAND.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: POR2, POR4

Station Documentation

Link to RLR information.

Documentation - date unknown

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.

Data Authority

N.O.A.A. / N.O.S.
N/oes33, Ssmc4, Room 6531
1305 East-West Highway
Silver Spring,
MD 20910