GLOSS Station Handbook

GLOSS Station Handbook – Galveston (Pier 21), TX

The GLOSS Station Handbook is currently being re-designed and upgraded.

Until a new version is available, the tide gauge station list below from the last version of the Handbook provides links to further details about each tide gauge in the GLOSS Core Network. Click the GLOSS number buttons to view the information. Click column headings to sort the table.


Station information

Gloss number217
Station nameGalveston (Pier 21), TX
Time zone090W, GMT - 6hrs
Latitude (+ve N)29.31666
Longitude (+ve E)-94.8
Observation periods1908-, being upgraded 2007
Responsible countryU.S.A.
Authority responsible for tide gaugeNOAA, National Ocean Service, 1305 East-West Highway, Silver Spring, MD 20910-3281, USA
GLOSS contactUSA
Committed to GLOSSYes
Location map
Digital dataYes
Aditional parametersSurface temperature and density
Data acquisition rate6 minute intervals
Fast delivery data at UHSLCData 775 File format
High frequency data at UHSLCData 775a Document 775a File format
Data held at national organisationYes
Real-time data availableYes
Real-time data transmitted to GLOSS Fast Centre
Additional parameters (real-time)None
Tide gauge benchmarkUS 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) dataRLR 828 RLR 161
Annual MSL (RLR) plot
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 updated5 December 1993