Data



Data Notes



Extracted from Database

14 Oct 2019

DAVAO, DAVAO GULF

Station Information

Station ID: 537
Latitude: 7.083333
Longitude: 125.633333
GLOSS ID: 71
Coastline code: 660
Station code: 121
Country: PHILIPPINES
Time span of data: 1948 – 2017
Completeness (%): 80
Date of last update: 04 Dec 2018

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 DAVAO, DAVAO GULF.

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

Plot of annual mean sea level data at DAVAO, DAVAO GULF.

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)

Fast Delivery Data from UHSLC station 372: hourly and daily
Research Quality Data from UHSLC station 372: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Davao 660/121 RLR(1969) is 9.0m below BM11

Documentation added 1993-06-17

December 1958 for Davao is anomalously low.

Documentation added 2010-10-14

The first mention of datum for Davao is in a letter dated 16.03.1959 where the datum is said to be 13.01ft relative to BM 4. A letter dated 17.12.1987 gives a datum of BM 11 3.861 relative to datum TSO 1947. Throughout the names BM 1 and BM 11 seem to be inter-changeable.Data for 1988-1992 BM 1/11 3.852m above TSO 1947. In 1993 there is a reference to BM 8 3.446m relative to TSO 1947.There is no data for Davao 1994-2002 as the data is either very poor quality or missing.From 2003 data onwards benchmark is BM 18 4.849m above TSO 1947. Occasionally
this is rounded to 4.85m.Davao was made RLR in 2010 Gauge type is SUTRON

Documentation added 2012-02-27

The data from the gauges re-instatement is possibly suspect. However, the remoteness of the Philippine stations makes it difficult to confirm this.The relationship between BM 18 and TSO 1947 is now given as 5.746m

Documentation added 2018-02-07

following a query revised values for November and December 2016 have been supplied.

Data Authority

National Mapping and Resource Information Authority
Hydrography Department
421 Barraca St,
San Nicolas 1010
Manila