GLOSS Station Handbook

Station information sheet

GLOSS number217
Station name

Galveston (Pier 21), TX

Time zone090W, GMT - 6hrs
Latitude (+ve N)29.31666
Longitude (+ve E)-94.8
Observation period(s)1908-, 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 Galveston (Pier 21), TX
Digital dataYes
Additional parametersSurface temperature and density
Data acquisition rate6 minute intervals
Fast delivery data at UHSLCDownload h775.dat from UHSLC   Format documentation for UHSLC data
High frequency data at UHSLCDownload from UHSLC   Download documentation qa775a.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
Additional parameters (real-time)Surface temperature and density
Tide gauge benchmarksUS Army Corps of Engineers survey disk stamped '7.151' set in the sidewalk near the northeast corner of the Hendley Building on 20th Street, Galveston, TX.
Benchmark relationshipsTGBM is 10.183 feet above tide staff zero TGBM = 5.63 feet above mean lower low water (1960-1978 epoch) TGBM = 4.81 feet above mean sea level (1960-1978 epoch) TGBM = 4.31 feet above mean high water (1960-1978 epoch)
Auxiliary benchmarksUSC & GS 32 1913 No stamping 1 = 13.362ft USC & GS J305 1935 USED 19 bolt USC & GS 40 1935 reset 1450A 1989 = 11.058ft USC & GS 41 1935 reset Aquatrak Levelling Point = 20.147ft USC & GS 42 1943 = 9.981ft NOS NO 2 1974 = 9.979ft Heights are in feet above staff zero
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Galveston (Pier 21), TX   Download annual MSL (RLR) data for Galveston (Pier 21), TX
Annual MSL (RLR) plotView annual MSL (RLR) plot for Galveston (Pier 21), TX   View annual MSL (RLR) plot for Galveston (Pier 21), TX
PSMSL code161
Other relevant codesUHSLC 775
Additional information 
Other relevant informationNearby station located at Galveston Pleasure Pier (outside on the Gulf of Mexico) has shorter and less continuous record length than Galveston Pier 21 (inside) station described above (PSMSL Code 940/007; PSMSL hold data 1957-1973, 1978-1990).
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)