U.S. DEPARTMENT OF COMMERCE
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National Ocean Service
Datums Page Page 1 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
On the island of Vieques in the town of Esperanza, the station is located on an
abandoned concrete pier on the east side of Esperanza. From the intersection of
Cll Robles road and RT Pr-997, proceed south on Pr-997 for 0.20 miles until you
come to a dirt road on the left(Southeast) side of Pr-997 leading to Esperanza
pier. The station is located in the middle of the concrete pier, being an
aluminum enclosure with two 20 ft fiberglass mast.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 2695 A 2005
DESIGNATION: 975 2695 A
MONUMENTATION: Tidal Station disk VM#: 17949
AGENCY: National Ocean Service (NOS) IDB PID#: DN8535
SETTING CLASSIFICATION: Concrete pier OPUS PID#: DN8535
LATITUDE: 18° 5.6' N ( 18.09386) LONGITUDE: 65° 28.3' W ( -65.47133)
The primary bench mark is set flush in a concrete pier, 48.1m (157.9 ft) SSW of
the dock entrance, 4.55 m (14.9 ft) west of the east side of the pier, 3.80 m
(12.5 ft) east of the west side of the pier, 3.77m (12.4 ft) North of a solar
panel post, 2.97m (9.7 ft) SW of a windmill post, and 0.51 m (1.7 ft) west of
the 4-inch well.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2695 B 2005
DESIGNATION: 975 2695 B
MONUMENTATION: Tidal Station disk VM#: 17950
AGENCY: National Ocean Service (NOS) IDB PID#: DN8534
SETTING CLASSIFICATION: Concrete pier OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09422) LONGITUDE: 65° 28.3' W ( -65.47131)
The bench mark is set flush in a concrete pier located on the west shore end of
the pier, 48.60 m (159.4 ft) north of bench mark 2695 A 2005, 5.00 m (16.4 ft)
west of the east side of the pier, and 2.99 m (9.8 ft) south of the north end of
the concrete kneewall.
BENCH MARK STAMPING: 2695 C 2005
DESIGNATION: 975 2695 C
MONUMENTATION: Tidal Station disk VM#: 17951
AGENCY: National Ocean Service (NOS) IDB PID#: DN8536
SETTING CLASSIFICATION: Concrete calvert OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09500) LONGITUDE: 65° 28.3' W ( -65.47147)
The bench mark is a disk set in the top of a white concrete kneewall for a
calvert pipe at the entrance path to the pier, 6.80 m (22.3 ft) east of a power
pole with a light and three guy wires, 5.70 m (18.7 ft) south of the centerline
of 996, 0.90 m (3.0 ft) west of the east end of the concrete kneewall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2695 D 2005
DESIGNATION: 975 2695 D
MONUMENTATION: Tidal Station disk VM#: 17952
AGENCY: National Ocean Service (NOS) IDB PID#: DN8533
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09500) LONGITUDE: 65° 28.4' W ( -65.47333)
The bench mark is a disk set flush in a concrete wall located 23.70 m (77.8 ft)
west of a fire hydrant, 9.50 m (31.2 ft) SW of the centerline of 996, and 4.0 m
(13.1 ft) SSE of the center of the gazebo.
BENCH MARK STAMPING: 2695 E 2005
DESIGNATION: 975 2695 E
MONUMENTATION: Tidal Station disk VM#: 17953
AGENCY: National Ocean Service (NOS) IDB PID#: DN8532
SETTING CLASSIFICATION: Concrete wall OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09533) LONGITUDE: 65° 28.4' W ( -65.47392)
The bench mark is set flush in the concrete bulkhead located 24.0 m (78.7 ft)
SSE of a concrete power pole with transformer and light set in concrete cap,
13.20 m (43.3 ft) west of a black light pole, 6th pole from the east end of the
walkway, 8.60 m (28.2 ft) SSW of the centerline of the road.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2695 F 2006
DESIGNATION: 975 2695 F
MONUMENTATION: Tidal Station disk VM#: 18068
AGENCY: National Ocean Service (NOS) IDB PID#: DN8531
SETTING CLASSIFICATION: Concrete bulkhead OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09556) LONGITUDE: 65° 28.5' W ( -65.47472)
The bench mark is a disk set flush in a concrete bulkhead near a concrete gazebo
and an intersection of Intillo Street, 17.29 m (56.7 ft) west of a set of
concrete stairs leading to the beach, 9.14 m (30.0 ft) SSW of Calle Flamboyan,
and 0.15 m (0.5 ft) north of a concrete rail.
BENCH MARK STAMPING: 2695 G 2007
DESIGNATION: 975 2695 G
MONUMENTATION: Tidal Station disk VM#: 18309
AGENCY: National Ocean Service (NOS) IDB PID#: DN8537
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09567) LONGITUDE: 65° 28.3' W ( -65.47142)
The benchmark is set flush in the top of rock out cropping on the east side of
rt. 996, 0.30 mi (0.48 km) south of intersection 997 and 201, 0.20 miles (0.32
km) south on 996, 34.90 m (114.50 ft) south from the center of a concrete power
pole number 004, north of BM G and on the east side of rt. 996 directly across
from residence 161, 17.98 m (58.99 ft) NE from the NE corner of residence 163
which is abounded and south of residence 161 on the west side of rt. 996, 3.94 m
(12.93 ft) east of the center line of rt. 996, 0.33 m (1.08 ft) above the height
of rt. 996.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2695 H 2008
DESIGNATION: 975 2695 H
MONUMENTATION: Tidal Station disk VM#: 18685
AGENCY: National Ocean Survey/Service (NOS) IDB PID#: DN8538
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 18° 5.8' N ( 18.09583) LONGITUDE: 65° 28.3' W ( -65.47169)
The bench mark is a brass disk set flush in the top of rock out cropping, on the
east side of Rt. 996, 0.48 km (0.30 mi) south of intersection 997 and 201, go
east (right) on un-named road to water treatment plant near residence 161 and
156, 20.7 m (67.9 ft) west of center line of Rt. 966, 14.20 m (46.59 ft) east
from center line of driveway at residence 156, 11.06 m (36.29 ft) south of
concrete power pole 0201, 1.10 m (3.61 ft) above the road surface.
BENCH MARK STAMPING: 2695 J 2014
DESIGNATION: 975 2695 J
MONUMENTATION: Bench Mark disk VM#: 21152
AGENCY: National Ocean Service IDB PID#:
SETTING CLASSIFICATION: Concrete seawall OPUS PID:
LATITUDE: 18° 5.7' N ( 18.09567) LONGITUDE: 65° 28.5' W ( -65.47511)
The benchmark is located on island of Vieques in the town of Esperanza along the
Malecon that runs E and W along the road, just E of a concrete terrace and
across the street from belly buttons restaurant set flush in the concrete
seawall, 15.8 m (51.8 ft) W of the center of a tree with bench, 11.54 m (37.9
ft) E of the SW corner of the terrace, 8.28 m (27.2 ft) N of the centerline of
the road, and 0.55 m (1.8 ft) N of the S edge of the seawall.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 2695 K 2017
DESIGNATION: 975 2695 K
MONUMENTATION: Tidal Station disk VM#: 22302
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: OPUS PID:
LATITUDE: 18° 5.8' N ( 18.09661) LONGITUDE: 65° 28.3' W ( -65.47139)
The bench mark is a disk set in a concrete foundation of a destroyed brick and
mortar pier, 44.4m (145.7 ft) South of mile marker 2.5, 30.4m (99.7 ft) North of
old rusted engine block, and 14.7m (48.2 ft) ESE of centerline of route 997.
BENCH MARK STAMPING: 2695 M 2017
DESIGNATION: 975 2695 M
MONUMENTATION: Tidal Station disk VM#: 22303
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete culvert OPUS PID:
LATITUDE: 18° 5.8' N ( 18.09633) LONGITUDE: 65° 28.3' W ( -65.47197)
The bench mark is a disk set in the right concrete culvert of EBAS Esperanze
Aqueduct Authority, 42.5m (139.4 ft) North of centerline of route 997, 6.8m
(22.3 ft) SSW of rear gate to Bio Bay Tours, and 0.73m (2.4 ft) SSW of first
metal light powerpole.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
T I D A L D A T U M S
Tidal datums at ESPERANZA, VIEQUES ISLAND based on:
LENGTH OF SERIES: 6 YEARS
TIME PERIOD: 04/07 - 03/09, 09/10 - 08/12, 03/15 - 02/17
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 9751639 CHARLOTTE AMALIE, ST. THOMAS
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (09/06/2017) = 0.562
MEAN HIGHER HIGH WATER MHHW = 0.225
MEAN HIGH WATER MHW = 0.220
MEAN SEA LEVEL MSL = 0.119
MEAN TIDE LEVEL MTL = 0.115
Puerto Rico Vertical Datum of 2002 PRVD02 = 0.098
MEAN LOW WATER MLW = 0.010
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/28/2006) = -0.185
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
2695 A 2005 2.065 1.845
2695 B 2005 2.225 2.005
2695 C 2005 2.027 1.807
2695 D 2005 2.878 2.658
2695 E 2005 3.051 2.831
2695 F 2006 3.250 3.030
2695 G 2007 3.388 3.168
2695 H 2008 3.758 3.538
2695 J 2014 3.432 3.212
2695 K 2017 4.783 4.563
2695 M 2017 2.594 2.374
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
Foot Notes:
Bench marks 2695 K 2017 and 2695 M 2017 are based on one differential leveling
connection and do not meet the quality control standards of the NOS. Therefore,
caution should be used when deriving elevations for these marks
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 9 of 9
Station ID: 9752695 PUBLICATION DATE: 04/10/2018
Name: ESPERANZA, VIEQUES ISLAND
PR
NOAA Chart: 25664 Latitude: 18° 5.6' N ( 18.09386)
USGS Quad: ISLAND OF VIEQUES Longitude: 65° 28.3' W ( -65.47136)
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.