Data and Station Information for PORT ISABEL

Station Information

Station ID:	497
Latitude:	26.06
Longitude:	-97.215
Coastline code:	940
Station code:	1
Country:	UNITED STATES
Time span of data:	1944 – 2023
Completeness (%):	96
Date of last update:	10 Jan 2024

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 PORT ISABEL.

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

Plot of annual mean sea level data at PORT ISABEL.

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: TXLN
Research Quality Data from UHSLC station 772: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Port Isabel 940/001 RLR(1970) is 9.0m below BM6

Documentation added 1993-07-29

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

Documentation added 2011-07-27

The data was downloded from the NOAA site. Datum information was also extracted. The NOAA Primary Benchmark is now NO 10 1973 4.276 above TGZ.

Documentation added 2014-02-13

Whole dataset was downloaded from NOAA. There were data point revised throughout 1971-1972 and 1977-1995. Adjustments were in the order of 2-3mm. Datum level for Sept. 2011 - Oct. 2012 was also adjusted.

Data Authority

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

Data

Data Notes

Extracted from Database

PORT ISABEL