Data



Data Notes



Extracted from Database

20 May 2019

ALERT BAY

Station Information

Station ID: 554
Latitude: 50.583333
Longitude: -126.95
Coastline code: 822
Station code: 21
Country: CANADA
Time span of data: 1948 – 1978
Completeness (%): 98
Date of last update: 01 Jan 1980

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 ALERT BAY.

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

Plot of annual mean sea level data at ALERT BAY.

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: BCOV

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Alert Bay 822/021 RLR(1968) is 14.4m below BM 5,1965

Documentation added 2010-08-19

To clarify the RLR diagram BM 1 1947 was in use 1947-1957, BM 2 1947 was in use 1957-1965. BM 5 1965 came into use 1965 onwards. RLR facto is 4.075m. BM 5 1965 is 14.4m below TGBM BM 5 1965.

Data Authority

Canadian Hydrographic Service
615 Booth Street
Ottawa
Ontario K1A 0E6