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GLOSS Station Handbook

Station information sheet

GLOSS number150
Station name

Seward, AK

Time zone135W, GMT - 9hrs
Latitude (+ve N)60.11666
Longitude (+ve E)-149.43333
Observation period(s)1923-, being upgraded 2007
Responsible countryU.S.A.
Authority responsible
for tide gauge
NOAA, National Ocean Service, 1305 East-West Highway, Silver Spring, MD 20910-3281, USA
GLOSS contactUSA
Committed to GLOSSYes
Location mapView location map for GLOSS station Seward, AK
Digital dataYes
Data acquisition rate6 minute intervals
Fast delivery data at UHSLCDownload h560.dat from UHSLC   Format documentation for UHSLC data
High frequency data at UHSLCDownload from UHSLC   Download documentation qa560a.dmt from UHSLC   Download from UHSLC   Download documentation qa560b.dmt from UHSLC   Download from UHSLC   Download documentation qa560c.dmt from UHSLC   Format documentation for UHSLC data
Data held at national organisationYes
Real-time data availableYes
Real-time data transmitted
to GLOSS Fast Centre
Real-time data plots from UHSLC
Tide gauge benchmarksUS C&GS tidal benchmark survey disk stamped 'NO 22 1966' set in a concrete curb supporting a guard rail near the Alaska Railroad Pier.
Benchmark relationshipsTGBM = 24.78 feet above mean lower low water (1960-1978 epoch) TGBM = 19.24 feet above mean sea level (1960-1978 epoch) TGBM = 15.11 feet above mean high water (1960-1978 epoch)
Auxiliary benchmarksNO 19 1966 5090 C 1978 NO 21 1966 5090 D 1982 NO 24 1973 5090 E 1982 TIDAL BM 26 1975 5090 F 1982 5090 A 1978 5090 B 1978 Site Inspection 1993 states 'levels agree with history'
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Seward, AK
Annual MSL (RLR) plotView annual MSL (RLR) plot for Seward, AK
PSMSL code266
Other relevant codesUHSLC 560
Additional information 
Last updated1993-12-05

Related BODC pages

Sea level portal      World Ocean Circulation Experiment (WOCE) — Sea  level
UK Tide Gauge Network     Climate Variability and Predictability (CLIVAR)
GLOSS project page  


Related external links

Global Sea Level Observing System (GLOSS)     Permanent Service for Mean Sea Level (PSMSL)
University of Hawai`i Sea Level Centre (UHSLC)  World Ocean Circulation Experiment (WOCE)


Permanent Service for Mean Sea Level (PSMSL) Global Sea Level Observing System (GLOSS) Station Handbook Intergovernmental Oceanographic Commission (IOC)