U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 9759173 PUBLICATION DATE: 07/20/2021
Name: BOQUERON
PR
NOAA Chart: US5PR62M Latitude: 18° 1.4' N ( 18.02403)
USGS Quad: PUERTO REAL, P.R. Longitude: 67° 10.4' W ( -67.17311)
To reach the tidal bench marks from the United States Post Office in Boquer n
which is located at the intersection of PR-101 and Calle Mirasol, proceed W on
PR-101 for 0.5 km (0.3 mi) to the intersection with Avenue Parque Nacional, then
turn left and proceed South on Avenue Parque Nacional for 0.5 km (0.3 mi) to a
private access road leading to the Pescaderia Villa Palmeras, veer right and
proceed W for 300 m (1000 ft) to the end of the road at the Pescaderia. Park and
proceed northwesterly for approximately 50 m (160 ft) to a seawall. The bench
marks are located in the general vicinity of the seawall. The tide gauge is
located on the seawall.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9173 A 2020
DESIGNATION: 975 9173 A
MONUMENTATION: Flange-encased Rod VM#: 23609
AGENCY: National Geodetic Survey (NGS) IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID#: BBHB97
LATITUDE: 18° 1.4' N ( 18.02261) LONGITUDE: 67° 10.3' W ( -67.17208)
The primary bench mark is a flange encased rod set in a grass field South of the
Boqueron small boat marina, 63.95 m (209.8 ft) North of a yellow wooden life
guard stand, 27.18 m (89.2 ft) East of the water line, 12.01 m (39.4 ft) SW of
the West corner of a chain link fence enclosing a canoe school and 0.79m (2.6
ft) ESE of a palm tree. The bench mark is set 5cm (2 inches) below grade being
the top of a stainless steel rod driven 12.8 m (42.0 ft) to refusla in a sleeve
extending to a depth of 1.0 m (3.3 ft) and encased in a 7 inch NOS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 9759173 PUBLICATION DATE: 07/20/2021
Name: BOQUERON
PR
NOAA Chart: US5PR62M Latitude: 18° 1.4' N ( 18.02403)
USGS Quad: PUERTO REAL, P.R. Longitude: 67° 10.4' W ( -67.17311)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9173 B 2020
DESIGNATION: 975 9173 B
MONUMENTATION: Tidal Station disk VM#: 23610
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete abutment OPUS PID:
LATITUDE: 18° 1.5' N ( 18.02433) LONGITUDE: 67° 10.4' W ( -67.17275)
The bench mark is a disk set in a concrete abutment for a floodgate in the
vicinity of the Boqueron small boat marina, 19.51 m (64.0 ft) WSW of a blue
metal bridge arm to raise and the lower the entrance to Boqueron marina, 14.12 m
(46.3 ft) ENE of a blue building with an orange roof and balcony facing the
ocean, 13.00 m (42.7 ft) NE of a grey metal light post adjacent to the blue
building and 0.90 m (3.0 ft) NW of the edge of the water.
BENCH MARK STAMPING: 9173 C 2020
DESIGNATION: 975 9173 C
MONUMENTATION: Tidal Station disk VM#: 23612
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete seawall OPUS PID:
LATITUDE: 18° 1.4' N ( 18.02392) LONGITUDE: 67° 10.4' W ( -67.17314)
The bench mark is a disk set on the West end of the South seawall of the
entrance to the Boqueron small boat marina, 56.61 m (185.7 ft) WSW of a blue
metal bridge arm to the Boqueron marina entrance, 39.83 m (130.7 ft) SSW of a
yellow fence adjacent to the marina entrance, 25.53 m (83.8 ft) West of a green
metal gate entrance to a wooden private dock, and 23.52 m (77.2 ft) SW of a 3.38
m (11.1 ft) high sign that reads 'Caution Manatee Area'.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 9759173 PUBLICATION DATE: 07/20/2021
Name: BOQUERON
PR
NOAA Chart: US5PR62M Latitude: 18° 1.4' N ( 18.02403)
USGS Quad: PUERTO REAL, P.R. Longitude: 67° 10.4' W ( -67.17311)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9173 D 2020
DESIGNATION: 975 9173 D
MONUMENTATION: Tidal Station disk VM#: 23613
AGENCY: National Ocean Service (NOS) IDB PID:
SETTING CLASSIFICATION: Concrete slab pier OPUS PID:
LATITUDE: 18° 1.4' N ( 18.02319) LONGITUDE: 67° 10.4' W ( -67.17256)
The bench mark is a disk set in a concrete pier South of the Boqueron small boat
marina, 80.22 m (263.2 ft) South of a green metal gate to a private wooden dock,
78.18 m (256.5 ft) NNE of the seaward side of the private wooden dock, 27.58 m
(90.5 ft) West of the southern most fence post in the grassy entrance to the
beach, and 0.73 m (2.4 ft) NNW of the southern edge of the concrete pier the
mark is set in.
BENCH MARK STAMPING: 9173 E 2020
DESIGNATION: 975 9173 E
MONUMENTATION: Flange-encased Rod VM#: 23617
AGENCY: National Geodetic Survey (NGS) IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID#: BBHB96
LATITUDE: 18° 1.4' N ( 18.02303) LONGITUDE: 67° 10.3' W ( -67.17139)
The bench mark is a flange encased rod set in a grass strip between an access
road and a fence located to the south of the Boqueron marina, 39.42 m (129.3 ft)
North of the NE corner of Escuelas De Desarrollo Deportiveo building, 34.52 M
(113.3 FT) NW of a yellow fire hydrant projecting upwards 94 cm (37 inches) from
the top of its concrete foundation, 8.00 m (26.2 ft) WNW of a 30 cm (12 inches)
breast height diameter plam tree and 1.72 m (5.6 ft) SSE of a chain link fence
adjacent to the road. The bench mark is set 6 cm (2 inch) below grade, being the
top of a stainless steel rod driven 12.2 m (40. ft) to refusal, in a sleeve
extending to a depth of 1.0m (3.3 ft) and encased in a 7-inch NOS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 9759173 PUBLICATION DATE: 07/20/2021
Name: BOQUERON
PR
NOAA Chart: US5PR62M Latitude: 18° 1.4' N ( 18.02403)
USGS Quad: PUERTO REAL, P.R. Longitude: 67° 10.4' W ( -67.17311)
T I D A L D A T U M S
Tidal datums at BOQUERON based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: January 2021 - March 2021
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 9759110 MAGUEYES ISLAND, CARIBBEAN SEA
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.243
MEAN HIGH WATER MHW = 0.234
Puerto Rico Vertical Datum of 2002 PRVD02 = 0.135
MEAN TIDE LEVEL MTL = 0.127
MEAN SEA LEVEL MSL = 0.123
MEAN LOW WATER MLW = 0.020
MEAN LOWER LOW WATER MLLW = 0.000
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
9173 A 2020 1.844 1.610
9173 B 2020 1.278 1.044
9173 C 2020 0.880 0.646
9173 D 2020 1.066 0.832
9173 E 2020 0.841 0.607
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 9759173 PUBLICATION DATE: 07/20/2021
Name: BOQUERON
PR
NOAA Chart: US5PR62M Latitude: 18° 1.4' N ( 18.02403)
USGS Quad: PUERTO REAL, P.R. Longitude: 67° 10.4' W ( -67.17311)
D E F I N I T I O N S
Mean Sea Level (MSL) is a tidal datum determined over a 19-year National
Tidal Datum Epoch. It pertains to local mean sea level and should not be
confused with any other fixed island datum.
This tide station location has a defined island datum (PRVD02). Island datums
are specific fixed geodetic datums whose elevation relationship to local MSL
and other tidal datums may not be consistent from one location to another.
The Vertical Mark Number (VM#) and PID# shown on the bench mark sheet are unique
identifiers for bench marks in the tidal and geodetic databases, respectively.
Each bench mark in either database has a single, unique VM# and/or PID# assigned.
Where both VM# and PID# are indicated, both tidal and geodetic elevations are
available for the bench mark listed. The NGS's Integrated Data Base (IDB PID)
provides geodetic datum based on traditionally leveled and bluebooked ties to
the National Spatial Reference System(NSRS) https://www.ngs.noaa.gov/datasheets/.
The NGS Online Positioning User Service (OPUS PID) provides geodetic datum based
on GPS position & tie it to the NSRS https://www.ngs.noaa.gov/OPUS/.
The PRVD02 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have PRVD02 elevations.
The PRVD02 elevation relationship shown in the table is derived from an average
of several bench mark elevations relative to tide station datum. As a result of
this averaging, PRVD02 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from PRVD02 elevations listed for
each bench mark in the NGS database.