Data



Data Notes



Extracted from Database

20 May 2019

PORTLAND (MAINE)

Station Information

Station ID: 183
Latitude: 43.656667
Longitude: -70.246667
Coastline code: 960
Station code: 181
Country: UNITED STATES
Time span of data: 1912 – 2018
Completeness (%): 100
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 PORTLAND (MAINE).

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

Plot of annual mean sea level data at PORTLAND (MAINE).

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 Real Time Stations from VLIZ: ptme
Research Quality Data from UHSLC station 252: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Portland (Maine) 960/181 RLR(1964) is 11.4m below BM31

Documentation added 2011-08-17

Using NOAA data the RLR diagram has been re-drawn. The Primary benchmark BM 31 8.406m above gauge datum remains the same but has now been given the full name ELEV 14.501 FT TIDAL 31 as appears on the NOAA website.

Data Authority

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