Station Information

Station ID: 183
Latitude: 43.656667
Longitude: -70.246667
Coastline code: 960
Station code: 181
Time span of data: 1912 – 2023
Completeness (%): 100
Date of last update: 26 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.

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