U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
To reach the tidal bench marks from the intersection of Highway 116 and Highway
304, proceed south on Highway 304 for about 3 km (2 mi) to its end at the
village of La Parguera. Turn east and continue for 0.8 km (0.5 mi) to a boat
dock. From the boat dock take a small boat to Magueyes Island. The bench marks
are on the University of Puerto Rico campus, Institute of Marine Biology. The
tide gage and staff are on an L-shaped pier on the west side of the island.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: TIDAL BM NO 1
DESIGNATION: 975 9110 TIDAL 1
ALIAS:
MONUMENTATION: Survey disk VM#: 1398
AGENCY: University of Puerto Rico IDB PID#: DO1326
SETTING CLASSIFICATION: Rock outcrop OPUS PID:
LATITUDE: 17° 58.2' N ( 17.96978) LONGITUDE: 67° 2.6' W ( -67.04408)
The primary bench mark is set in an 0.21 m x 0.21 m (0.7 ft x 0.7 ft) concrete
block atop a 1 m (2 ft) high rock outcropping, 22.56 m (74.0 ft) SSW of the SE
corner of the main laboratory building, 17.04 m (55.9 ft) north of the NE corner
of Building No. 47-3-634, 13.87 m (44.5 ft) south of the SW corner of the
laboratory building, and 10.06 m (33.0 ft) east of the east edge of a sidewalk
along the shore.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: TIDAL BM NO 2 CAMA UPR 1955 ELEV
DESIGNATION: 975 9110 TIDAL 2
MONUMENTATION: Survey disk VM#: 1399
AGENCY: University of Puerto Rico IDB PID#: DO1327
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 17° 58.3' N ( 17.97086) LONGITUDE: 67° 2.8' W ( -67.04631)
The bench mark is a set in a 0.21 m x 0.21 m (0.7 ft x 0.7 ft) concrete block
between the main laboratory building and the new laboratory building, 23.77 m
(78.0 ft) south of the main power and telephone pole, 8.47 m (27.8 ft) east of
the SE corner of the new laboratory building, 4.42 m (14.5 ft) SW of the SW
corner of the main laboratory building, and 0.24 m (0.8 ft) above ground level.
BENCH MARK STAMPING: 9110 B 1980
DESIGNATION: 975 9110 B
MONUMENTATION: Tidal Station disk VM#: 1403
AGENCY: National Ocean Survey (NOS) IDB PID#: DO1325
SETTING CLASSIFICATION: Bedrock OPUS PID:
LATITUDE: 17° 58.2' N ( 17.96981) LONGITUDE: 67° 2.7' W ( -67.04561)
The bench mark is a set in bedrock NE of the L-shaped pier, on a small hill next
to sidewalk, 22.22 m (72.9 ft) SW of the power cable building, 11.22 m (36.8 ft)
NE of the NW corner of the air compressor building, 13.20 m (43.3 ft) NNW of the
NW corner of the National Science Foundation Building, and 2.44 m (8.0 ft) above
the pier walkway level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9110 D 1980
DESIGNATION: 975 9110 D
MONUMENTATION: Tidal Station disk VM#: 1404
AGENCY: National Ocean Survey (NOS) IDB PID#: DO1330
SETTING CLASSIFICATION: Bedrock OPUS PID:
LATITUDE: 17° 58.2' N ( 17.96983) LONGITUDE: 67° 2.7' W ( -67.04533)
The bench mark is a set in bedrock along a pathway on the west side of the
island, 26.18 m (85.9 ft) south of the SW corner of the woodworking shop, 11.67
m (38.3 ft) north of the NW corner of Building No. 47-3-7-612, and 1.83 m (6.0
ft) east of the center of the path next to shore.
BENCH MARK STAMPING: 9110 E 1980
DESIGNATION: 975 9110 E
MONUMENTATION: Tidal Station disk VM#: 1405
AGENCY: National Ocean Survey (NOS) IDB PID#: DO1565
SETTING CLASSIFICATION: Bedrock OPUS PID:
LATITUDE: 17° 58.1' N ( 17.96881) LONGITUDE: 67° 2.7' W ( -67.04539)
The bench mark is set in bedrock along a pathway on the West side of the island,
19.96m (65.5 ft) SSE of the south side of building no. 30-841, and 1.83 m (6.0
ft) east of the center of the path next to shore.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9110 F 1982
DESIGNATION: 975 9110 F
MONUMENTATION: Tidal Station disk VM#: 1406
AGENCY: National Ocean Survey (NOS) IDB PID#: DO1566
SETTING CLASSIFICATION: Concrete footing OPUS PID:
LATITUDE: 17° 58.2' N ( 17.96981) LONGITUDE: 67° 2.7' W ( -67.04533)
The bench mark is a set in the south side of a 0.61 m x 0.61 m (2.0 ft x 2.0 ft)
concrete light pole footing, 15.85m (52.0 ft) West of the NW corner of the
maintenance building, 11.28 m (37.0 ft) east of the east edge of the sidewalk
running along the shore, 9.60 m (31.5 ft) SE of the NW corner of a pumphouse,
and 1.52 M (5.0 ft) North of the North face of the oil tank building.
BENCH MARK STAMPING: 9110 G 1982
DESIGNATION: 975 9110 G
MONUMENTATION: Tidal Station disk VM#: 1407
AGENCY: National Ocean Survey (NOS) IDB PID#: DO1564
SETTING CLASSIFICATION: Bedrock OPUS PID#: DO1564
LATITUDE: 17° 58.2' N ( 17.96958) LONGITUDE: 67° 2.7' W ( -67.04539)
The bench mark is a set in bedrock at the north end of the maintenance building,
9.81 m (32.2 ft) south of the SE corner of Building No. 47-3-7-557 (Physical
Oceanography Office), 3.99 m (13.1 ft) NE of the NW corner of the maintenance
building, and 2.35 m (7.7 ft) north of the NE corner of the maintenance
building.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 9110 H 1998
DESIGNATION: 975 9110 H
MONUMENTATION: Tidal Station disk VM#: 13930
AGENCY: National Ocean Service (NOS) IDB PID#: DO1324
SETTING CLASSIFICATION: Concrete steps OPUS PID:
LATITUDE: 17° 58.2' N ( 17.97025) LONGITUDE: 67° 2.8' W ( -67.04583)
The bench mark is a set in the SW corner of the concrete steps leading to the
main building (No. 47-3-7-660) of the Institute of Marine Biology on the north
side of the island, 28.8 m (94.5 ft) south of the SE corner of the boat taxi
operator's building, 20.4 m (66.9 ft) NNE of the NE corner of a grey colored
power transformer box, and 13.1 m (43.0 ft) west of the NW corner of the main
building.
BENCH MARK STAMPING: 975 9110 J 2000
DESIGNATION: 975 9110 J
MONUMENTATION: Tidal Station disk VM#: 16043
AGENCY: National Ocean Service (NOS) IDB PID#: DO1328
SETTING CLASSIFICATION: Sidewalk OPUS PID:
LATITUDE: 17° 58.2' N ( 17.96939) LONGITUDE: 67° 2.7' W ( -67.04556)
The bench mark is set in the concrete walkway leading to the door of the
carpenter shop, building 47-3-7-659, 19.36 m (63.5 ft) SW of the SE corner of
the boat shed, 15.59 m (51.2 ft) west of the NE corner of the carpenter
building, 0.50 m (1.6 ft) south of the edge of the walkway, and 0.15 m (0.5 ft)
above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 44
DESIGNATION: 975 9110 GPS 44
MONUMENTATION: Survey disk VM#: 21876
AGENCY: University of Puerto Rico Mayaguez IDB PID#:
SETTING CLASSIFICATION: Boat ramp OPUS PID#: DO1329
LATITUDE: 17° 58.2' N ( 17.96944) LONGITUDE: 67° 2.7' W ( -67.04569)
The bench mark is a disk set in a concrete boat ramp/road on the west side of
the island, 17.8 m (58.4 ft) west of the plumming, electrical and woodshop
building labeled 30-817, 8.7 m (28.5 ft) east of the small boat building labeled
30-818, and 5.9 m (19.4 ft) south of the gasoline and oil building labeled
30-842.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
T I D A L D A T U M S
Tidal datums at MAGUEYES ISLAND, CARIBBEAN SEA based on:
LENGTH OF SERIES: 19 YEARS
TIME PERIOD: January 1983 - December 2001
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION:
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (08/31/1979) = 0.801
MEAN HIGHER HIGH WATER MHHW = 0.204
MEAN HIGH WATER MHW = 0.201
MEAN TIDE LEVEL MTL = 0.102
MEAN SEA LEVEL MSL = 0.101
Puerto Rico Vertical Datum of 2002 PRVD02 = 0.085
MEAN LOW WATER MLW = 0.003
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (06/11/1968) = -0.268
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
TIDAL BM NO 1 3.664 3.463
TIDAL BM NO 2 CAMA UPR 1955 ELEV 6.958 6.757
9110 B 1980 3.183 2.982
9110 D 1980 0.671 0.470
9110 E 1980 0.938 0.737
9110 F 1982 1.747 1.546
9110 G 1982 3.244 3.043
9110 H 1998 3.020 2.818
975 9110 J 2000 1.426 1.225
44 0.715 0.514
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 8
Station ID: 9759110 PUBLICATION DATE: 09/26/2017
Name: MAGUEYES ISLAND, CARIBBEAN SEA
PR
NOAA Chart: 25671 Latitude: 17° 58.2' N ( 17.97000)
USGS Quad: PARGUERA Longitude: 67° 2.8' W ( -67.04639)
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.