Data



Data Notes



Extracted from Database

20 May 2019

GALVESTON II, PIER 21, TX

Station Information

Station ID: 161
Latitude: 29.31
Longitude: -94.793333
GLOSS ID: 217
Coastline code: 940
Station code: 8
Country: UNITED STATES
Time span of data: 1908 – 2018
Completeness (%): 99
Date of last update: 31 Jan 2019

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 GALVESTON II, PIER 21, TX.

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

Plot of annual mean sea level data at GALVESTON II, PIER 21, TX.

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: TXGA, TXGV, GAL1
Nearby Real Time Stations from VLIZ: gptx
Fast Delivery Data from UHSLC station 775: hourly and daily
Fast Delivery Data from UHSLC station 767: hourly and daily
Research Quality Data from UHSLC station 775: hourly and daily
Research Quality Data from UHSLC station 767: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Galveston II 940/008 RLR(1964) is 8.6m below BM35

Documentation added 1993-07-29

Many stations on the Gulf coast have large values for September 1961.

Documentation added 1994-07-14

For a discussion of submergence near to Galveston, Freeport and Sabine Pass, see Emery and Aubrey (Sea Levels, Land Levels and Tide Gauges), 1991, Springer-Verlag, page 39.

Documentation added 2000-01-05

Galveston was inundated by a major storm on 8 September 1900.

Documentation added 2011-07-27

Data is downloaded from the NOAA website. Datum information was also downloaded NOAA Benchmark was previously labelled as BM 35. Benchmark appears on the NOAA website as 7.151 alias 35.

Data Authority

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