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.
Nearby GNSS Stations from SONEL: FTS5, TPW2, FTS1
Nearby Real Time Stations from VLIZ: asto2, asto
Research Quality Data from UHSLC station 572: hourly and daily
The Columbia River outflow apparently has a major effect on Astoria sea level.
Documentation added 2011-08-25
Using NOAA data the RLR diagram has been re-drawn. Primary benchmark is now TIDAL 11 1959 5.934m above gauge datum. The previously used benchmark BM1 6.718m no longer features in the NOAA reports.