GLOSS Station Handbook

Station information sheet

GLOSS number154
Station name

Sitka, AK

Time zone135W, GMT - 9hrs
Latitude (+ve N)57.05
Longitude (+ve E)-135.33333
Observation period(s)1938-, 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 Sitka, AK
Digital dataYes
Data acquisition rate6 minute intervals
Fast delivery data at UHSLCDownload h559.dat from UHSLC   Format documentation for UHSLC data
High frequency data at UHSLCDownload from UHSLC   Download documentation qa559a.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 benchmarksNOS tidal benchmark survey disk stamped 'TIDAL 26 1974' set in a rock outcrop south of the Russian Block House #1 off of Seward Street in Sitka, AK.
Benchmark relationshipsTGBM = 40.95 feet above mean lower low water (1960-1978 epoch) TGBM = 35.70 feet above mean sea level (1960-1978 epoch) TGBM = 31.81 feet above mean high water (1960-1978 epoch)
Auxiliary benchmarks8 1924 TIDAL BM 1600K 1978 1600 J 1977 16 1941 1600 L 1982 22 1965 No stamping 1 TIDAL 24 1974 TIDAL 25 1974 Site inspection 1993 states 'levels agree with history' and 'BM City continues to show movement over years'
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Sitka, AK
Annual MSL (RLR) plotView annual MSL (RLR) plot for Sitka, AK
PSMSL code426
Other relevant codesUHSLC 559
Additional information 
Last updated2002-12-11

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)