Station Information

Station ID: 135
Latitude: 39.933333
Longitude: -75.141667
Coastline code: 960
Station code: 87
Time span of data: 1900 – 2023
Completeness (%): 97
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.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: PAPH

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Philadelphia 960/087 RLR(1971) is 9.8m below BM21

Documentation added 2012-02-15

Data 1900-1989 for Philadelphia on the NOAA website is NOAA No. 845 5530 where primary benchmark is listed as 35 1931 3.802m above TGZ. This information is written on the original RLR diagram. From 1989 onwards delegated NOAA number is 845 5240 4.688m above TGZ. Benchmark 21 from the original RLR diagra no longer features 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